PNBE _TRD_ 86 (PDF) - Indian Railways

Electrical construction, ECR, Page 1 of 117 

START OF DOCUMENT 

EAST CENTRAL RAILWAY 

ELECTRICAL CONSTRUCTION 

TENDER DOCUMENT 

Tender for 

Shifting of portal and Auxiliary Transformer and provision of insulated 

catenary near level crossing No. 1 at Patna Junction. 

TENDERNO. ELS/CON/MHX/PNBE (TRD) /86/05-06 

Issued to 

Price - Rs.1000/- 

Copy No.


Tender Notice 

TENDER NO. ELS/CON/MHX/PNBE (TRD) /86/05-06 

Sealed Tenders are invited for and on the behalf of president of India, from reputed contractors for 

the following work. 

1. Name of work : Shifting of portal and auxiliary Transformer and 

provision of Insulated catenary near level crossing 

No. 1 at Patna Junction. 

2. Approximate Cost : 9.23 Lakhs 

3. Earnest Money : Rs. 18500/- (Eighteen Thousand Five hundred) 

only by DD/ FDR in favour of FA & CAO (Con) 

ECR. Mahendrughat, Patna, payable at Patna. 

4. Cost of Tender Paper : Rs.1000/- each (Non-refundable) to be deposited 

in cash with CBS/Chief cashier, Danapur, Patna, 

Hajipur, Dhanbad or by DD in favor of FA & 

CAO (Con) ECR Mahendrughat Patna, payable at 

Patna 

5. Date & time of selling of tender 

paper 

: From 30.08.05 to 13.09.05 (from 11:00 hrs. to 

17.00 hrs) except Saturday, Sunday & Holidays. 

6. Venue of selling of tender Paper : Office of Dy. Chief Electrical Engineer, East 

Central Railway, Mahendrughat, 

Patna(CAO/C/MHX office complex) & 

Dy.CEE/CON/Dhanbad on any working day. 

7. Date, Time and Venue for : On 14.09.05 up to 12:00 Hrs. in a sealed tender 

submission of tender 

box kept in the office of CAO (Con) East Central 

Railway, Mahendrughat, Patna. & 

Dy.CEE/CON/Dhanbad. 

8. Date, Time and Venue for : On 14.09.05 at 12.30 Hrs. (in presence of 

opening of tender 

contractors or their authorized representative at the 

office of CAO (Con) East Central Railway, 

Mahendrughat, Patna & Dy.CEE/CON/Dhanbad. 

9. Period of completion of the work : 120 (One Hundred Twenty) days from the date of 

issue of letter of acceptance.


10 Cost of Tender paper should be deposited in cash to the Chief booking supervisor/chief 

cashier East Central Railway, Danapur, Patna, HJP and Dhanbad or by DD in favor of FA & CAO 

(Con) ECR, Mahendrughat, and Patna, payable at Patna. Tender Paper will be issued on production 

of the original money receipt or the DD with an authorized person. 

11. Eligibility criteria. 

a) Valid electrical contractor licence with electrical supervisor licence from any state /central 

government. 

12. Tenderer is advised to visit the site of work and acquaint themselves with site conditions and 

quantum of works in their own interest. 

13. Tender must be accompanied by prescribed amount of Earnest Money in acceptable form as 

mentioned in the tender documents. Tenders without prescribed earnest money will be liable to be 

summarily rejected. 

14. Tender paper shall also be available on Railway Board’s website http//www.indianrail.gov.in 

(during the above mentioned period). If tender paper is downloaded from website, the cost of 

tender paper should also be submitted by DD in favour of FA & CAO (Con) ECR, 

Mahendrughat, Patna, payable at Patna along with the tender documents. Tender papers 

downloaded from website without cost of tender paper shall be summarily rejected. 

15. In case the date of opening happens to be a holiday or unusual occurrence, the tender will be 

opened on the following working day at the same time and same venue. 

16. The railway reserves the right to cancel or modify the tender as a whole or partly 

Without assigning any reason what so ever may be. 

Deputy Chief Electrical Engineer 

East Central Railway, Hajipur.


I N D E X 

Chapter Description Page No. 

Cover Page 1 

Tender Notice 2-3 

Preamble 5-7 

Part – I Chapter – I 

Instruction of Tender & Condition of 

tendering 

8-14 

Part-I Chapter – II Condition of Contract 15-44 

Part – I Chapter – III Price & Payment 45-50 

Part – I Chapter-IV Explanatory Notes of Schedule 51-59 

Part – I Chapter-V Schedule of work 60-63 

Part – II Chapter – I General Specification 64-74 

Part – II Chapter – II Foundations 75-78 

Part – II Chapter – III Structures 79-82 

Part-II Chapter – IV Equipments, Components & Materials 83-91 

Part – II Chapter – V Design & Drawings 92-100 

Part – II Chapter – VI Inspection & Testing 101-103 

Part – III Particular specification 104-105 

Part – IV Annexure 106-116 

Part – V Forms of Tenders 117-118


PREAMBLE 

1. SCOPE 

The tender paper is related to OHE modification and shifting of portal and auxiliary 

Transformer and provision of Insulated catenary near level crossing No.1 at Patna Junction. 

2. FOREIGN EXCHANGE 

No foreign exchange and/ or import license will be released / provided to the contractor in 

connection with this contract. 

3. EARNEST MONEY 

The Tenderer shall deposit with in favor of FA & CAO/ Construction E.C.Rly, 

Mahendrughat, Patna (or his successor whose address will intimated subsequently A sum of 

Rs. 18500/-(Eighteen Thousand five hundred only.) as Earnest Money in the manner 

prescribed in para 1.1.5. 

5. SECURITY DEPOSIT 

The successful tenderer shall furnish security deposit for due fulfillment of the contract in 

favor of FA & CAO (CON), ECR, Mahendrughat, Patna or his successor (whose address will 

be intimated in due course) an amount calculated of the contract value as follows – 

i) For contracts upto Rs.1.0 lakhs : 10% of the contract value 

ii) For contracts more than Rs. 1 

Lakhs and upto to Rs.2 Lakhs 

: 10% for first 1 lakhs, 7.5% for the 

balance. 

iii) For contracts more than Rs. 2 

Lakhs and upto to 2 crores 

: 10% for first 1 lakhs, 7.5% for the next 1 

lakh 5% of the balance subject to 

maximum Rs.3 Lakhs. 

iv) For contracts above Rs.2 Crores : 5% of the contract value. The amount 

over and above Rs.3 lakhs to be 

recovered from the progress bills of the 

contractors @10% till it reaches 5% of 

Contact value. 

6. DEVIATIONS 

All the tenderers may please note that the offers seeking modified terms and conditions by 

way of deviations mentioned under either memorandum or deviation schedule for instance, higher 

mobilization advance, or any modification in respect of mobilization advance, on account/ progress 

payment, recovery rate, insurance warranty, will normally not be accepted. 

7. DELETED 

8. DELETED 

9. DESIGN SPEED – 

It is proposed that the traction overhead equipment for main line is made suitable for a 

maximum speed of 160 km/h. Regulated tramway type overhead equipment for a shed may 

be applicable as per RDSO design & specification. 

10. TYPE OF OHE TO BE PROVIDED


Traction overhead equipment for main line will be conventional regulated type OHE Suitable 

for a maximum speed of 160 km/h as per RDSO design & specification. 

11. PERIOD OF COMPLETION 

All works relating to supply and erection of fixed electrical installation in each section 

covered shall be completed within a period of 120 days from the date of issue of letter of 

intent / letter of acceptance of tender whichever is earlier. 

12. TENDER PAPER 

Tender paper can be obtained from the office of Dy. Chief Electrical Engineer / Con/ East 

Central Railway, Mahendrughat, Patna and & DyCEE/CON/Dhanbad on production of 

deposit receipt/DD of Rs.1000/-( One Thousand) as prescribed in tender notice. 

13. CREDENITIALS:- 

a) Valid electrical contractor licence with electrical supervisor licence from any state /central 

government. 

14. ENGINEERING ORGANIZATION 

The Tenderer shall have adequate engineering organization required for the execution of the 

tendered OHE work as contractor or sub contractor. 

he Tenderer should have all the construction machinery, tools & plants, vehicles etc. required 

for the satisfactory execution of works. The details shall be furnished in the tender 

documents. 

16. FINANCIAL CRITERIA 

The Tenderer shall produce following documents along with the bid – 

(a) Audited balance sheet and income statement of just concluded year certified by Govt. 

recognized Chartered Accountant. 

These documents are required to ascertain the Company’s financial standing. 

17. LAST DATE FOR SUBMISSION OF TENDERS 

The tenders shall be submitted up to date and time indicated in tender notice in the 

office/offices as indicated in the tender notice. In case the day happens to be a holiday or 

unusual occurrence the tender will be submitted on the following working day at the same 

time and same venue. 

18. DATE OF OPENING OF TENDERS 

The Tenders will be opened at time, date and office/offices as indicated in tender notice. In 

case the day happens to be a holiday or unusual occurrence the tender will be opened on the 

following working day at the same time and same venue. 

19. All Tenderers are requested to submit their offer including price schedule in the tender 

documents issued by Railways.


PART – I 

CHAPTER – I 

INSTRUCTIONS TO TENDERERS AND CONDITIONS OF TENDERING 

1.1.1 TENDER PAPERS 

The instruction to tenderers and conditions of Tendering, conditions of Tendering, Conditions 

of contract, prices, payment and explanatory notes, specifications and forms of Tender, included in 

parts of V shall, hereafter, be collectively referred to as the "Tender Paper". 

The intending Tenderer is advised to study the Tender papers carefully and to follow G.C.C. 

The Tenderer shall also acquaint himself with the local conditions, means of access to the site of 

work, nature of work and all other matters pertaining thereto. 

The submission of a Tender shall be deemed to have been done after careful study and 

examination of the Tender Papers with a full understanding of the implications thereof. 

1.1.2. INTERPRETATIONS 

The following Terms where after occurring in the Tender Paper and wherever used 

throughout the execution of the work, shall unless excluded by or repugnant to the context have the 

meaning attributed thereto as follows - 

CONTRACT 

Means the Contract resulting from the acceptance by the purchaser of this Tender either in 

whole or in part. 

CONTRACTOR 

Means the successful tenderer, i.e. the tenderer whose tender has been accepted either in 

whole or in part. 

CONTRACT'OR’S AGENT 

Shall mean the person or persons authorized under the duly executed power of attorney to 

take all actions relating to the work, as could be taken by the contractor himself. In the case of a firm 

of contractors, the agent shall have the same power as that of the Managing Director of the firm. 

CONTRACTOR’S REPRESENTATIVE 

Shall mean a person in supervisory capacity who shall be so declared by the Contractor and 

who shall be authorized under duly executed power of attorney to receive materials issued by the 

purchaser to the contractor for the works. He shall be responsible for proper execution of works at 

each or all places and shall take orders from purchaser’s Engineering and carry out the same. 

ENGINEER 

Shall mean the Chief Electrical Engineer (construction) in executive charge of said work and 

shall include superior officers of the E.C.Rly. He is responsible for ensuring that all field works 

covered by the contract carried out in accordance with approved design, drawing and specifications 

and conditions of contract as agreed to. He is also responsible for prices and terms of payment. 

“EQUIPMENT”. 

Mean all or any equipment considered necessary by the purchaser’s Engineers for the 

satisfactory operation, as a whole of the installation, including structures, foundations etc. 

GENERAL MANAGER/ CHIEF ADMINISTRATIVE OFFICER (CON) 

Means the officer in Administrative in charge of E.C.Rly and shall mean and include the 

officers to whom the functions are delegated. His postal address shall be intimated to the successful 

Tenderers in due course. 

MONTH 

‘Months’ means any consecutive period of thirty days.


MATERIALS 

‘Materials’ means all equipments, components, fitting and other materials including, raw 

materials to complete the work. 

PURCHASER 

‘Purchaser’ means the president of India acting through his accredited officers or any one of 

them. The General Manager/ Chief Administrative Officer (Construction) in charge of the Railway 

(whose address will be indicated in due course) shall be deemed to be one of such accredited officer. 

PURCHASER’S ENGINEERS 

‘Purchaser’s Engineer means the Engineering appointed by the purchaser, as indicated in 

Part-III of the Tender papers who will decide all matters relating to design, manufacture, installation 

and commissioning of the plant and equipment at site. 

RAILWAY 

‘Railway’ means the E.C.Rly in whose territorial jurisdiction the work is to be carried out and 

includes the Govt. of India. Ministry of Railways (Railway Board) and / or General Manager of the 

E.C.Rly. 

SUB-CONTRACTOR 

‘Sub-contractor’ means and individual or a firm of a contractors or a company registered 

under Indian Company Act or an approved supplier of materials to whom the Contractor sublets 

portions of the contract after obtaining specific prior approval of the purchaser in writing for 

subletting of Contract. 

SITE 

‘Site’ means the areas to be taken up by the permanent works, together with any other area or areas 

as shall be determined by the Purchaser’s Engineers, which may be placed at the disposal of the 

Contract for the purpose of the Contract and also such area. 

Or areas used for store yards, work yard or work shop in proximity of the work as the 

purchasers Engineers may have authorized as an extension of the site, irrespective of the terms and 

conditions under which they are occupied by the Contract. 

"TENDERER" 

Tender means and includes any form of Engineers or Contractors or any company or body, corporate 

or otherwise, which submit the Tender, which has been invited. 

WORK OR WORKS 

Work or works means all or any of the items of the work for which the Tenderer/ Contractor 

has tendered/ contracted according to the specifications and drawings and annexure here to annexed 

or to the implied there from, or incidental there to or to be hereafter specified or required in such 

explanatory instructions and drawings, annexure and schedules and also such instructions and 

drawings additional to the aforementioned as a from time to time be issued by the Purchaser’s 

Engineers during the progress of the contracted work. 

WRITING 

Writing includes all matters written, type written and printed either in whole or in part. 

1.1.3 GENERAL 

a) All documents to be submitted in connection with this Tender shall be written in English and 

in Ink. 

b) All prices shall be expressed in figures in words. 

c) The definitions of technical terms used will be the same as given in the International Electro 

Technical Voluntary. 

d) METRIC – Dimensions, weight etc. shall be quoted in metric system. The terms ‘tonne’ 

(=1000 kg.) shall be used indicate metric tonne (M.T.) 

1.1.4 CLARIFICATIONS


Any clarification required by the Tenderer may be obtained from the Dy. Chief Electrical 

Engineer/CON (E.C.Rly), MHX. 

1.1.5 EARNEST MONEY 

The Tenderer shall deposit in favor of the Financial Advisor & Chief Accounts Officer 

(Construction) E.C.Rly, Mahendrughat, Patna , Earnest Money as indicated in tender notice. 

a) Tenderer shall hold the offer open for a periods of six months from the date fixed for opening 

the same, it being understood that the tender documents have been sold/ issued to the tenderer 

and the tenderer has been permitted to tender in consideration of the stipulations on his part 

that after submitting his tender, he will not resale from the offer or modify the terms and 

conditions thereof in any manner not acceptable to the Dy. Chief Electrical Engineer (Const.) 

E.C.Rly, MHX. Should the Tenderer fail to observe or comply with the foregoing stipulation 

the entire Earnest Money should be liable to the forfeited by the Railway. 

b) The receipt shall be incorporated in the bid. The earnest money should be in cash or in any of 

the following forms – 

(i) Deposit receipts, pay orders and demand drafts. These forms of earnest money could be either 

of the State Bank of India or of any of the Nationalized Banks. No confirmatory advice from the 

Reserve Bank of India will be necessary. The earnest money deposit in the form of guarantee 

bonds shall not be accepted. 

(ii) Deposits executed by the scheduled Banks (Other than the State Bank of India and the 

nationalized banks) approved by the Reserve Bank of India for the purpose. 

NOTE – In case the earnest money is deposited in cash the payment should be made to the FA 

& CAO (CON), ECR Mahendrughat, and cash receipts obtained from his should be furnished 

along with Tender bid. 

(a) No interest will be paid on the Earnest Money. It will be refunded in full to the 

unsuccessful Tenderer on application. In the case of successful Tenderer the deposit will be 

retained as part of payment of Security Deposit, or will be returned on payment of the full 

security deposit for due fulfillment of the contract . 

(b) The tenderer whose tender is accepted shall be required to appear at the office of the 

General Manager or the Chief Administrative Officer (Construction) or Chief Electrical Engineer 

or Deputy Chief Electrical Engineer (con), as the case may be in person, or in case of firm or 

corporation, a duly authorized representative to execute the contract documents within a 

reasonable time to be determined by the Dy. Chief Electrical Engineer (Const) E.C.Rly, 

Mahendrughat, Patna (MHX) after notice that the contract has been awarded to him. Failure to do 

so shall constitute breach of the agreement effected by the acceptance of the tender in which case 

the full value of the Earnest Money accompanying the tender shall stand forfeited without 

prejudice to any other rights or remedies. In the event of any tenderer whose tenderer accepted 

shall refuse to execute the contract documents as herein-before provides, the Railway may be 

determined that such tenderer as abandoned the contract and their upon the tender and the 

acceptance thereof shall be treated as cancelled and the Railway shall be entitled to forfeit the full 

amount of the Earnest Money and to recover the liquidate damages for such default. 

1.1.6 DELETED 

1.1.7 FORM OF TENDER 

(a) The Tenderer must submit his tender on the paper issued by Railways or downloaded 

from website. Tenders not submitted in proper FORMS as indicated below are liable to be rejected. 

The offers shall be put into a large and sealed envelope. The envelope shall also be super scribed 

with “name of work”, Tender Number and date of closing / opening . 

Tender shall consist of the following –


1. Offer letter complete with summary of prices duly filled in Form-I. 

2. Memorandum of the Tender 

3. Complete technical data and particulars of the equipment offered, as specified in the tender 

papers together with descriptive literature, leaflets etc. 

4. Deviations from “Tender Papers”, if any. 

5. Alternative proposals of the Tender, if any. 

6. Prices: Schedule-I: Schedule of prices. 

7. Tenderer’s scheme of work and time schedule. 

8. Name of manufacturer/ place of manufacturer and inspection of supplier. 

9. Tenderer’s Credentials. 

10. Receipt for Earnest Money. 

11. Drawings, if any complete with list. 

12. Solvency certificate (Attested photo copy of the same) from Bank approved by RBI. 

13. Audit Balance Sheet (attested photo copy of the same) duly certified by Govt. registered 

Chartered Accountant. 

Note: Tender papers should be duly signed by the Tenderer on each and every page in token of his 

having studied the Tender Papers carefully. 

(a) Should the Tenderer have alternative proposals for basic arrangements, typical designs, 

and specifications drawings for components and materials which the Tenderer considers would 

improve the operating performance of the equipment or would reduce the cost of equipment. He shall 

clearly indicate in detail the technical and / or financial advantages, which would accrue to the 

purchaser, specifically for each alternative proposal suggested by him. 

(b) Tenderer may, if he deems it necessary, submit a short and concise memorandum of 

descriptive of matter, which cannot be incorporated in other parts of the Tender. In the event of the 

Tenderer quoting rates based on assumptions, which are contrary to the principles, laid down to the 

Tender papers the basis (or such assumptions, drawing particular attention to the rates to which they 

are connected should be incorporated in the memorandum. If so, mention is made in the 

memorandum it would be presumed that the same basis as has been laid down in the tender paper has 

been followed by the tender or even if a different basis is adopted that what has been laid down in 

tender paper. The tenderer shall keep length of such memorandum or descriptive matter to minimum. 

(c) Deviations from tender paper will not normally be agreed to. Should the tenderer be 

unable for good and sufficient reason to comply entirely with the tender papers he shall indicate the 

deviations desired by him in the tender. Such deviations, if any shall be kept down to the absolute 

minimum and reason for the deviation shall be indicated. The purchaser, however, reserves the right 

to cancel the tender, if deviations is not acceptable to him and if the tenderer is unwilling to modify 

the deviation in a manner acceptable to the purchaser. The tenderer in all cases shall indicate clearly 

the specific addition and amendment desired by him, to the relevant para of the tender papers. 

1.1.8 PRICE 

This is the works Contract. The unit of price is Rupees (Rs.) The price to be paid for supply 

and erection of various items of works or for material and other amount payable, shall be in 

accordance with accepted schedules or prices or rates as governed by the terms and conditions of 

payment included in Part-I, Chapter-III, prices and payment. The price shall be FIRM including all 

taxes. No price variation clause will be applicable in this tender. 

1.1.9 DELETED 

1.1.10 SPECIFICATION AND DRAWING


The Tenderer shall follow the standard general arrangement drawings and other drawing and 

specification relating to the equipment, components and fittings specified in the Tender Papers. A list 

of standard drawings and specifications are enclosed in Annexure-I Part-IV. Copies of the above 

standard drawings are available for inspection in the Drawing Office of the Dy. Chief Electrical 

Engineers (Cons) E.C.Rly, MHX or his successor/ nominee (whose address will be intimated in the 

due course). 

1.1.11 SCHEDULE OF WORK 

(a)The Tenderer shall indicate the period in months within which he would complete the 

work of the entire section, in the offer letter of Tender assuming that the letter of acceptance of the 

tender is issued to him in month zero. 

(b)The Tenderer shall enclose with his offer the scheme of work and realistic time schedule 

on graph paper showing the period of time that he will take for the various items of work listed 

therein. Any reduction offered by the Tenderer in the period allowed for completion of works will be 

taken in to account while examining the offers. 

1.1.12 SIGNING OF TENDERS 

a. Any individual or individuals signing the Tender or other documents connected therewith 

should specify whether he is signing – 

• As a sole proprietor of the concern or his Attorney, or 

• As a Partner of Partners of the firm, or 

• For the firm per procreation, or 

• As a Director, Manager or Secretary in the case of a Limited Company. 

b. In the case of firm not registered under the Indian partnership Act, all the partners or the 

attorney duly authorized by all of them should sign the Tender and all other connected documents. A 

copy of the document empowering the individual or individuals to sign should also be sent with the 

Tender. The tenderer should disclose his constitution fully and copies of all necessary legal 

documents in support thereof should be submitted with the Tender, and originals there of should be 

produced as and when called for, 

c. Should the tenderer be a partnership firm and in the event of the contract becoming 

inoperable due to the death of its partner, the purchaser shall have the right to enter into a separate 

Agreement with the surviving Partner or partners of the firm to continue the execution of the work 

under the terms and conditions of this Agreement. 

1.1.13 TENDERER’S ADDRESS 

Every Tenderer shall state in the Tender his postal address fully and clearly. Any 

communication sent to the Tenderer by Post at his address shall be deemed to have reached the 

Tenderer duly and in the time notwithstanding the fact that the communication did not reach the 

Tenderer at all or in time for wherever reason Important document shall be sent by Registered Post. 

1.1.14 ERASURE OR ALTERATION 

No erasure or alteration in the text of the Tender Papers is permitted and any such ensure and 

/ or alteration will either be disregarded or render the tender void at the option of the purchaser. Any 

correction made in rate for work shall be installed by the Tenderer in ink and dated. 

1.1.15 DELETED 

1.1.16 PURCHASER NOT BOUND TO ACCEPT ANY TENDER


The Purchaser shall not be bound to accept the lowest or any tender or to assign any reason 

for non-acceptance or rejection of a Tender. The Purchaser reserves the right to accept any Tender in 

respect of the whole or any portion of the work specified in the Tender papers or to sub divide the 

work among different Tenderer or to reduce the work or to accept any Tender for less than tendered 

quantities without assigning any reason what so-ever. 

In case the overall value of the tender by a public sector undertaking of the Central 

Government is up to 10% higher than the lowest tender of a private tenderer, the railway reserves the 

right to give purchase preference to the tender of such Public Sector undergoing at the lowest price 

bid. 

1.1.17 TENDER AGREEMENT 

The fact for the submission to the Purchaser of a Tender shall be deemed to constitute an 

Agreement between the Tenderer and the purchaser hereby such Tender shall remain open for 

acceptance either in part or in full, or as may be modified by negotiation, by the purchaser for a 

period of six months from the date on which tenders are opened, during which period the Tenderer 

shall not withdraw his offer nor amend, impair or derogate there from. The Earnest Money deposited 

shall be forfeited if the tenderer unilaterally withdraws, amends, impairs or derogate from the tender 

in any respect within the said period of six months. 

The Tenderer shall be deemed to have agreed as aforesaid in consideration of his Tender 

being considered by the Purchaser in terms here of provided the same has been duly submitted and is 

otherwise in order. When the successful Tenderer is notified in writing at his address given in the 

Tender within the said period of six months that his Tender has been accepted by the Purchaser 

either in whole or in part, he shall be bound by the terms of agreement constituted by Purchaser until 

a formal contract has been executed between him and the Purchaser in replacement of such 

Agreement . 

1.1.18 TENDER CONFIDENTIAL 

The Tenderer (whether his tender be accepted or not) shall treat the contents of his tender as 

private and confidential. He shall treat the prices quoted by him as strictly confidential till the 

Tenders are opened (see para 1.1.23) 

1.1.19 CANVASSING AND BRIBERY 

(a) No Tenderer shall canvass any Government official or the Purchaser’s Engineers in 

respect of this or any other Tender. Contravention of this condition will involve rejection of the 

Tender. This clause shall not be deemed to prevent the Tenderer from supplying the purchaser any 

information asked for by him. 

(b) Any bribe commission, gift or advantage given promised or offered by the Tenderer, or 

his partner. Agent or servant or any one on his or their behalf, to any officer, servant representative 

or agent of the Purchaser or any person on his or their behalf, in relation to the obtaining of this or 

any other contract with Purchaser, shall in addition to the criminal liability he may incur under the 

prevention of corruption Act (1908) subject the Tenderer to the cancellation of this and all other 

Tenders. Any question or dispute as to the commission of any offence under the present clause shall 

be decided by the Purchaser, in such manner and on such evidence or information as may be thought 

fit and sufficient, and his decision shall be final and conclusive in the matter. 

(c) Should a Tenderer be a retired Engineer of the Gazetted Rank or any other Gazetted 

Officer working before his retirement whether in executive or administrative capacity or whether 

holding a pensionable post or not in any Department of any of the Railway owned and administered 

by the President of India for the time being or should a Tenderer being a Partnership firm have as


one of its partners a retired Engineer or a retired Gazetted officer as aforesaid, or should be Tenderer 

being an incorporated company have any such retired Engineer or retired Officer as one of its 

Directors or should a Tenderer have in his employment any retired Engineer or retired Gazetted 

Officer as aforesaid, the full information as to the date of retirement of such engineer of gazette 

officer from the said service, and in cases where such engineers or officers have not retired from 

Government Service at least two years prior to the date of the submission or the Tender, as to 

whether permission for taking such contract, or if the Contract be a partnership firm of an 

incorporated company, to become a partner or Director as the case may be, or to take employment 

under the Contractor, has being obtained by the Tenderer or the engineer or the officer as the case 

may be, from the President of India or any officer duly authorized by him in this behalf, shall be 

clearly stated in writing at the time of submitting the tender (see offer letter form-1). Tenders without 

the information above referred to or a statement to the effect that no such retired engineers or retired 

Gazetted officer is so associated with a Tenderer, as the case may be shall be rejected. 

1.1.20 INDIAN LABOUR AND MATERIALS 

(a) The Tenderer shall utilize Indian Labour including supervisory staff, for the execution of 

this contract to the maximum possible extent. 

(b) The Tender shall be prepared on the basis that all the materials required to procured for 

the works are procured from indigenous sources in full. 

1.1.21 TENDERER’S CREDENTIALS 

Tenderers should produce all their credentials along with the tender paper. 

SUBMISSION OF TENDER 

The tender should be submitted in the form stated in clause 1.1.7 and enclosed in sealed cover super 

scribed “Tender for (Name of work) and addressed to the Dy. Chief Electrical Engineer (Con), East 

Central Railway, MHX and dropped in the tender box placed for purpose at nominated place/places 

not later than the date, and time prescribed in the preamble. The Tender as cannot be dropped in the 

tender box due to large size, shall be handed over to the Dy. Chief Electrical Engineer (Con)/ 

E.C.Rly MHX or his successor / nominee in person not later than prescribed date and time and the 

receipt there of obtained. 

1.1.22 OPENING TENDER 

Tender will be opened in the office/offices as mentioned in the tender notice in the presence 

of the Tenderers or their representatives. After opening of the tender documents that are submitted by 

the tenderer with all legal formalities by finance nominee and executive nominee, which are 

nominated by concerned officer in-charge, the total prices are only read out with the presence of all 

tenderers or their authorized representative. Authorization certificate should be submitted on opening 

of the tender. No individual rate will be read out. 

1.1.23 MISCELLANEOUS 

Tender documents are not transferable. The cost of the Tender papers is not refundable.


PART – I 

CHAPTER – II 

Condition of Contract 

1.2.1 SCOPE 

This chapter deals with the conditions of contract under which the various works coming 

under the preview or this contract are to be executed by the contractor. 

1.2.2. CONDITION OF CONTRACT 

If the tender submitted by a tenderer is accepted and the contract awarded to the tenderer, the 

various works coming under the purview of the contract shall be governed by the Terms and 

Conditions included in the tender papers covering the following: - 

1. Preamble to the Tender Papers. 

2. Instructions to tenderer and conditions of tendering, as included in Part-I, Chapter – I, 

3. Conditions of contract, as included in Part-I Chapter – II, 

4. Price and Payments, as included in Part-I, Chapter-III, 

5. Explanatory notes of schedule I, Schedule of prices, Part-I, Chapter-IV, 

6. General specifications, as included or referred to in Part-II 

7. Particular specification, as included or referred to in Part – III, and Annexure under Part IV 

and Forms under Part-V, and as modified or amended by the Letter of Acceptance of Tender. 

1.2.3 PURCHASER’S REPRESENTATIVE 

Subject as otherwise provided in this contract, all notices to be given on behalf of the 

purchaser and all other action to be taken on his behalf, may be given or taken, as the case may be, 

on his behalf by the General Manager or his successor. 

1.2.4 CONTRACTOR’S REPRESENTATIVE 

The contractor’s Representative shall be a person as defined in Para 1.1.2 

1.2.5 CONTRACTOR’S OFFICE AND ADDRESS 

The contractor shall, within a month of issue of letter of Acceptance of Tender establish an 

office at a convenient place indicated in Part-III, for progressing designs and drawing and field work 

expeditiously in consolation and with the approval of the purchaser. He shall intimate the purchaser 

and address thereof to which all correspondence shall be sent. Any communication sent to the 

contractor by post at his said address shall be deemed to have reached the contractor duly and in 

time. Important documents shall be sent by Registered Post. 

1.2.6 PURCHASER’S ADDRESS 

The list of addresses to which correspondence and documents relating to the contract should 

be sent, is included in Part-III. 

1.2.7 Deleted 

1.2.8 TAXES 

(a) The contractor and all personnel employed by him shall pay such taxes like Income Tax 

as are payable under Statutory Laws of India and the purchaser will not accept any liability for the 

same. 

(b) Deduction of Income Tax at source as per the provision of Finance Act and Income Tax 

Act in force may be made form the contractor. Sub contractor and the amount so deducted may be 

credited to the Central Government. 

1.2.9 BRIBERY


Any, bribe, commission, gift or advance given, promised or offered by the contractor, or his 

partner, Agent or servant or any one on his or their behalf to any officer, servant, repetitive or agent 

of the purchaser or any person on his or their behalf in relation to the obtaining or the execution of 

this or any other contract with the purchaser, shall, in addition to the criminal liability he may incur 

under the prevention of corruption Act (1908), subject the contractor to the cancellation of this and 

all other contracts, and also to payment of any loss resulting from any such cancellation to the like 

extent as is provided in case of cancellation due to other causes, and the purchaser shall be entitled to 

deduct the amounts or payable form any moneys otherwise due to the contractors under this of any 

other contract as envisaged under para 1.2.42. Any question or dispute as to the commission of any 

offence under the present clause shall be decided by the purchaser, in such manner and on such 

evidence or information as may be thought fir and sufficient and his decision shall be final and 

conclusive in the matter. 

1.2.10 RAILWAY PASS 

No Railway Pass for the conveyance of the contractor or his Agents or his Labour and /or 

store will be granted. 

1.2.11 LAWS OF INDIA 

This contract shall be governed by the laws for the time being in force in the Republic of 

India. 

1.2.12 FORCE MAJEURE 

If, at any time, during the continuance of this contact the performance, in whole or in part by 

either party, or any obligations under this contract shall be prevented or delayed by reason of any 

war, hostility, acts of the public enemy, civil commotion. Sabotage, fires floods, earthquakes, 

explosions, epidemics quarantine restrictions, strikes, lockout, any status. Statutory Rules, 

regulations orders or requisitions, issued by any Government Department or competent authority or 

acts of God there-in-after referred as event then provided notice of the happening of any such event 

is given by either party to the other within twenty one days form the date of occurrence thereof 

neither party have any claim for damages against the other in respect of such non-performance or 

delay in performance and the obligation under the contract shall be resumed as soon as practicable 

after such event has come to an end or ceased to exist. PROVIDED FURTHER that if the 

performance in whole or part of any obligation under this contract is prevented or delayed by reason 

or any such event beyond a period as mutually agreed to by the purchaser and the contractor after 

any event or 60 days in the absence of such as agreement whichever is more, either party may at its 

option terminate the contract provided also that if the contract is so terminated under this clause, the 

purchaser will at the time of such termination take over form the contractor, at prices as provided for 

in the contract, all erected equipment or equipments under erection as also all or any portion of 

unused, undamaged and acceptable equipments, whether in storage or in the course of manufacture, 

at schedule rates or at prices mutually agreed to, where schedule rates are to available. 

1.2.13 NOTICE UNDER LOCAL LAWS 

The purchaser shall, throughout the continuance of the contract and in respect of all matters 

arising out of the contracts, serve all notices and obtain all consents and way leaves, approvals and 

permissions required to be taken by the purchaser under any regulations and by-laws of the local or 

other authority, which shall be applicable to the works.


1.2.14 DETERMINATION OF CONTRACT 

(a) Notwithstanding the provisions under para 1.2.13 the purchaser may at any time by a 

notice in writing, summarily determine the contract without liability to pay any compensation to the 

contractor in respect thereof in any of the following events. 

i) INSOLVENCY 

If the contractor being an individual or if a firm any partner in the contractor’s firm shall at 

any time be adjudged insolvent or shall have a receiving order or orders for administration of his 

estate made against him or shall take any proceedings or liquidate or compensation under any law 

relating to insolvency for the time being in force or make any conveyance or assignment of his assets 

or enter into any arrangement or composition with his creditors or suspend payment, or if the firm be 

dissolved under the partnership Act. 

OR 

ii) LIQUIDATION 

If the contractor being a company shall pass a resolution or the court shall make an order for 

the liquidation of its affairs or a receiver or manager on behalf of the debenture holders shall be 

appointed or circumstances shall have arisen which entitled the court or debenture holders to appoint 

a receiver or manager. 

iii) BREACH OF CONTRACT 

If the contractor commits any breach of this contract not herein specifically provided for, 

provided always that such determination shall not prejudice any right of action of remedy which 

shall have occurred or shall accrue thereafter to the purchaser any extra expenditure which the 

purchaser is thereby put to, but shall not be entitled to any gain on re-purchase. In the event of such 

determination, without prejudice to the other rights and remedies of the purchaser including the 

rights of the forfeit in the security. Deposit, the purchaser shall be entitled to have the work of 

remainder thereof performed executed and or carried out by any other agency at the cost and the risk 

of the contractor and hold the contracts liable for reimbursement in the event of any loss on this 

account. 

(iv) If, at any time after the submission of the Tender, the Tenderer/ Contractor being a 

partnership firm admits as one of his partners or employees under it, or being an incorporated 

company, elects or nominates or allows to act as one of its directors or employees under it is any 

capacity whatsoever any retired engineer of the Gazetted rank or any other retired Gazetted officer 

working before his retirement, whether in the executive or administrative capacity, whether holding 

any pensionable post or not in any department of any of the Railways for the time being owned and 

Administered by the President of India, before the expiry of tow years form the date of retirement 

form the permission form the President of India or any Officer duly authorized by him in this behalf 

to become a partner or a Director or to take employment under the contractor, as the case may be, or 

v) if the contractor fails to give at the time of submitting the said tender. 

a) The correct information as to the date of retirement of such retired engineer or retired 

office form the said service or as to whether any such retired Engineer or retired Officer was under 

the employment of the contractor at the time of submission the said tender, or 

b) The correct information as to such engineers or officers obtaining permission to take 

employment under the contractor, or 

c) Being a partnership firm, the correct information as to whether any of the partners was 

such a retired Engineer or a retired officer, or


d) Being an incorporated company, correct information as to whether, any of the Directors 

was such a retired engineer or retired officer, or 

vi) (a) If the contractor having such a retired engineer or retired officer suppress and not 

discloses at the time of submitting the said Tender the fact of his being such retired engineer or 

retired officer, or makes at the time of submitting the said Tender wrong statement in relation to his 

obtaining permission to take the contract or if the contractor be a partnership firm or an incorporated 

company, to be a partner or Director of such firm or company as the case may be to seek 

employment under the contract. 

(b) Exceptions: Termination of contract will not arise in case of voluntary liquidation means 

for amalgamation or re-organization, provided the Railway formed company takes over the full 

responsibilities and liabilities of the liquidated firm and it is acceptable to the purchaser. 

(c) Termination of contract under this para and 1.2.29 will not arise in case of breaches or 

defects of a minor nature. The General Manager or his successor shall be the sole authority to decide 

whether breaches and defects are of minor nature. 

(d) (i) Right of Railway to determine contract : 

The purchaser shall be entitled to determine and terminate the contract at any time should in 

the purchaser’s opinion, the cessation of work becomes necessary owing the paucity of funds or from 

any other cause whatever in which case the value of approves materials at site and of work done to 

date by the contractor will be paid for in full at use rates specified in the contract. Notice in writing 

form the purchaser of such determination and the reason there for shall be conclusive evidence 

thereof. 

(ii) Payment on determination of contract : 

Schedule the contract be determined under sub- clause (i) above and the contractor claims 

payment for expenditure incurred by him in the expectation of completing the whole of the work by 

vouchers to the satisfaction for compensation or otherwise whatsoever on account of an profit 

advantage which he might have decided form the execution of the work in the but which he did not 

derive in consequence of determination of the contract. The Railways decision on the necessary and 

propriety of such expenditure shall be final and conclusive. 

1.2.15 LOSS IN TRANSIT 

If loss or damage occurs to the stores or any part there of during transit by rail, the contractor 

shall have only such remedy as is available to the public against the carrier under the Indian 

Railways (Amendment) Act. 1961, No. 39 of 1961. 

1.2.16 AGREEMENT 

(a) The successful Tenderer shall, within 30 days on receipt of letter of Acceptance, be 

bound to executive and agreement based on accepted rates and conditions, in such forms as the 

purchaser may prescribe and lodge the same with the purchaser together with the conditions of 

contract, specifications and schedule of prices referred to herein duly completed. The form for 

agreement is to be supplied by the purchaser during execution of agreement. 

1.2.17 SECURITY DEPOSIT 

(a) On receipt of the letter of Acceptance of Tender form the purchaser the successful 

tenderer shall within a period of 21 days, deposit with the Financial Advisor & Chief Accounts 

Officer (Construction) E.C. Rly. Mahendrughat or his successor (whose address will be intimated in 

due course) and amount as indicated in the preamble to wards payment of a Security Deposit for the 

fulfillment of the contract. The earnest money already paid by the successful Tender (see para 1.1.5)


may at the discretion of the successful Tenderer be adjusted to wards payment of this security deposit 

and the additional amount shall be paid in any one of the following forms. 

i) Cash 

ii) Government securities at 5% below market value. 

iii) Deposit receipt of the State Bank of India 

iv) Guarantee Bonds executed by the State Bank of India. 

v) Guarantee Bonds executed by Nationalized Bank/ any of the scheduled Bank as defined in 

the Reserve Bank of India Act of 1934. 

vi) A deposit in post Office saving Bank. 

vii) Deduction form the on account bill @ 10% form running on account bill subject to maximum 

rupees Three Lacs. The amount so deducted shall be released after 12 month or after 

submitting B.G. of equivalent value. 

viii) National Saving Certificate 12 years National Certificates, 10 years Defense Deposit 

Certificates and National Defense value. 

ix) Fidelity bonds of Nationalized General Insurance company in the from approved by the 

purchaser. 

x) Railway Bonds issued by India Railway Finance Corporation. 

b) Security deposit in cash will bear no interest. If the successful Tendered so desires, he 

may withdraw his Earnest Money Deposit if made in Cash (as Earnest Money) after furnishing a 

deposit of equal amount in any of the above forms. Government Securities and post Office Saving 

Bank Account should be hypothecated and discharged in about of the finance advisor and Chief 

Accounts Officer (Con) ECR Railway Mahendrughat or his successor (Whose address will be 

unlimited in due course and deposit receipts, guarantee Bonds and National Savings Certificates 

should be in the name of the Financial Adviser and Chief Accounts (Constructions) E.C. Railway, 

Mahendrughat, Patna or his successor (whose address will be intimated in due course). The 

Contractor tendering paper securities in the form (ii) (iii) (vi) and (vii) above should advise in the 

Chief Financial Engineer E.C. Railway, Mahendrughat t, Patna or his successor, Nominee (whose 

address will be intimated in due course) in good time regarding refund or renewal interest if timely 

information for refund or renewal of these paper securities is not given the purchaser. 1.2.18 

SCHEME OF WORK 

(a) Within a period of 15 days beginning form the date of issue of letter of Acceptance of 

Tender the contractor shall submit to the Dy. Chief Electrical Engineer (Con.) E.C. Railway 

Mahendrughat, Patna, the following documents (See Para- 1.1.11) 

(i) Detailed time schedule for design and submission of various documents enumerated in 

Part-II, Chapter –V. Design and drawing to be supplied by the purchaser shall also included in the 

time schedule to make it comprehensive. The comprehensive schedule shall be planned in a manner 

such that the entire basic designs and drawings are accepted by the purchaser within a period not 

exceeding one third of the total period allowed for completing the work. This period allowed for and 

working drawings, within a period not exceeding two third of the total period allowed for completing 

the work. This period shall be reckoned form the state of issue of the letter of Acceptance of Tender. 

The schedule shall take into account the time required for study by the purchaser who reserves for 

this purpose 7 days for verifying the designs and drawings. 

NOTE: The above provision is applicable provided the purchaser has been able to supply all 

pegging plans and other drawings and designs in a uniformly spread out manner to the maximum 

extent possible over a period ending at least one month before the target dates allowed to the 

contractor.


(ii) A detail time schedule shall be in form of a pert network consisting of an adequate 

number of activities covering key phases of work for each section. The network shall indicate the 

interface facilities and materials to be supplied by the purchaser and dress by which those are 

required. The planning for each stage of work shall be done in the order of priority as given by the 

purchaser and should be such as to complete the centre work within the stipulated period. 

(b) WORKS TO BE DONE AS APPROVED :- 

The planning shall be finalized in consultation with the purchaser and approved by the latter 

in writing before commencement latter of the work and the contractor shall be held responsible for 

the execution of the work in full compliance with approved against and drawings. Designs and 

drawing modified at site by the purchaser’s Engineers shall be treated as approved. However, such 

modifications shall be incorporated in the designs and drawings and re-submitted for formal 

approval. 

(c) MONTHLY PROGRESS REPORT :- 

The contractor shall furnish to the Dy. Chief Electrical Engineer (Con.) E.C. Railway, 

Mahendrughat , Patna or his successor/ nominee (whose address will be advised in due course) 

during the first week of every calendar month, a progress report showing progress of finalization of 

designs and drawings, materials and equipment received at site and the works carried out during the 

preceding month and up-to-date progress of these items along with the total quantum of designs and 

drawings, materials and equipments and the works required for the contract. 

(d) For finalizing the scheme for work out-line in above sub-para, the contractor shall make use 

of the latest network analysis techniques like CPM technique, PERT chat etc. 

1.2.19 QUALITY ASSURANCE PROGRAMME IN SUPPLY AND ERECTION : 

(a) All materials used in the work shall be of the best quality and of the class most suited for the 

purpose specified and procured from the sources approved by Research, Design & Standard 

organization/ central organization for Railway Electrification. It is essential that the manufacturer 

from whom supply is arranged should have long experience of design and manufacturer of 

equipments, components, materials and fittings. The requisite facilities for testing prototypes 

supplied against this contract should be available with the manufacturer, the manufacturer shall 

arrange to carry out the prototype tests at his own cost in a Testing Laboratory approved by the 

purchaser. Only tested quality steel shall be used. The contractor shall ensure that the purchaser’s 

prescribed quality Assurance Standards are rigidly followed in the manufacturer and erection/ 

installation of all the materials/ components and fittings / equipment required for the work. 

(b) 

Quality of materials and Erections: 

All erection work carried out shall also be of the best quality acceptable to the purchaser. 


1.2.21 OTHER RAILWAY STORE : 

If any material other than those specified as railway supply item in schedule of work is 

supplied by the purchaser either at the contractor’s request or suo motto in order to prevent any 

possible delay in the execution of the works likely to occur due to the contractor’s inability to make 

adequate arrangements for supply thereof or otherwise, recovery will be made from contractor’s bill 

at the issue rate or market rate prevailing at the time of supply, whichever is higher, plus 5% on 

account of initial freight and 2% on account of incidental charges together with supervision charges 

at 12.5% of the total cost inclusive of material freight and incidental charges or schedule-3 rate, 

whichever depot or RE siding shall be to the purchaser’s source of supply and the contractor’s depot 

of RE siding shall be to the contractors account. If, however, the material required by the contractor 

is not available in purchaser’s stock or the purchaser decides not to supply the same, be that for 

whatever reason, the purchaser shall not be bound to arrange for the supply at cost quoted above or at 

any other cost not will this fact be accepted as an excuse for delay in execution of works.


NOTE : If the contractor runs short of materials and such materials are available in purchaser’s 

stock, the material may be supplied by the purchaser in exceptional cases with the specific approval 

of the project in charge/ Chief Electrical Engineer on loan to the contractor, who will return these on 

receipt supplies or within two months whichever is earlier. The value of the loaned material would 

be computed by the purchaser based on schedule-1 rates and hire charges @18% per annum would 

be charges form the subsequent progress payments due to the contractor. In case the contractor fails 

to return the material within the stipulated two months period from the date of loaning of material, 

the material loaned earlier would be treated as sold. The recovery of the value of the sold material 

would be on the basis of the issue rate or market rate prevailing at the time of supply or market rate 

at the end of two months period, whichever is higher, plus 5% freight charges and 2% incidental 

charges together with supervision charges at 12.5% of the total cost inclusive of material, freight and 

incidental charges or schedule-3 rates whichever is higher. This recovery would be made form any 

bill submitted by the contractor subsequently either ‘On Account’ or ‘Progress Payment’. If 

prevailing market rates are not available, the recovery rates may be worked out by escalating the last 

purchase rate @ 10% escalation per annum. The last purchase rate shall, however, not be more that 

one year old. 

1.2.22 CONTRACTOR’S ORGANISATION: 

(a) In addition to the establishment of an office as per para 1.2.5, the contractor shall set 

up at least one main depot of receiving and storing steel work and other materials and establish a 

workshop for small fabrication and assembly work, if considered necessary by the contractor. If, he 

and the purchaser deem it necessary, sub-depots may be set up to ease operation or work trains and 

distribution of materials. The location of contractor’s depot and sub-depots will be mutually agreed 

upon by the purchaser and the contractor. For the main and sub-depots, the purchaser shall offer open 

space reasonably level and workable and suitable for storage of materials free of charge, inside 

Railway premises, which will be convenient from the point of view of operation. The depot shall as 

for as possible be located such as to be accessible by road. Accommodation, other facilities and 

running the establishment shall be borne by the contract. Labour charges for laying of additional 

sidings or alterations to the sidings, if considered essential by the contractor, shall be borne by the 

contractor. The recoverable costs shall be finalized and mutually agreed upon, before the tracks are 

laid. Track materials such as Rails, fastenings and ballast, and / or ashes cinder only for additions or 

alterations to sidings shall be provided free of charge to the contractor by the purchaser. Maintenance 

of all sidings will be done by the purchase at his own cost. On completion of the work the cost of 

dismantling such additional sidings shall be borne by the contractor. In case of difference of opinion 

in these maters in decision of the General Manager or his successor shall be final. 

(b) The purchaser will also provide free of charge stabling lines for work trains at suitable 

stations, should it be considered necessary to suit convenience of operation or to avoid haulage of 

work trains back to main or sub-depots except for the purpose of recoupment of stock on work trains. 

Space or storage of ballast and sand may also be provided free of charges along such stabling lines as 

convenient to the purchaser. The receipt of storage of materials at the main and sub-depots shall be 

so planned as to avoid transport of materials between the main and sub-depots and vice versa to the 

maximum extent possible. 

(c) The main depots will be located at stations as indicated in Part-III. The proposed location 

/s of sub-depots and stabling lines is / are to be given by the Tenderer for scrutiny and approval by 

the purchaser.


(d) For the main depot the services of a commercial clerk shall be provided, when required, 

for complying with commercial formalities of receiving and dispatching goods required. The cost of 

such clerk’s will be borne by the purchaser. 

(e) The contractor shall hand over the depot, sub-depot area complete with sidings within a 

period of one year form completion of the work cleared of all contractor’s stores or refuse unless 

otherwise agreed to buy the purchaser. 

(f) The contract will be responsible for transfer of materials form source if supply to the main 

or sub-depots, between depot/s and workshop’s except where otherwise stated. If wagons are 

required, the purchase will use his good offices for expeditious allotment. The contractor will be 

responsible for all loss and/ or damage in the transfer of materials and for demurrage or wharf age he 

may incur, and no loss damage or expenses incurred on this account will be reimbursed by the 

purchaser. Work trains for transport between depots or between depot/s and work site will be 

provided to the extent indicates in para 1.2.27. 

(g) Electricity may be supplied at places where spare capacity is available for running or 

machinery and for lighting. The contractor shall provide his own distribution system in consolation 

and with the approval of the purchaser. The cost of providing connections and of energy consumed 

shall be paid by the contractor to the purchaser in accordance with relevant rules and prevailing rates 

of the Railway. 

(h) At places where piped water supply is available the purchaser may supply water to the 

contractor at convenient points for his office, workshops and stores if necessary in connection with 

the work. The contractor shall arrange to lay his own pipettes for distribution in consolation and with 

the approval of the purchaser. The contractor shall be charged for consumption by the Railway at the 

rate of Rs. 2/- only per 1000 hires. The contractor shall arrange water at the work site at his own cost 

However, in exceptional cases where the purchaser is satisfied that it is not feasible for the contractor 

to arrange water due to its non- availability nearby, water may be made available free of cost in 

water tanks at watering station/s which may be carried to work site through work trains. The 

decision of the Purchaser in regard to supply of water through work trains shall be final and binding 

on the contractor. 

(i) The Contractor shall arrange at his own cost all tolls, plants and facilities as necessary for 

erection and testing of the equipments, in compliance with the Specification. 

(j) No. conservancy excess charges will be recovered from the Contractor. The Tenderer 

should take not of this while quoting rates. 

1.2.23. CONTRACTOR’S DRAWINGS ETC 

Any calculations, designs, drawings, schedules, information, data progress charts etc, 

required by the Purchaser’s Engineer in connection with the Contract, shall be furnished by the 

Contractor at his own expenses. The Contractor will be required to furnish drawing, designs and 

calculations etc, for basic designs and employment schedules provided by the Purchaser in case no 

modification/deviation is required for a particular basic design/ employment schedule. In case of new 

developments in designs, comments on Research Designs and Standards Organization (hereinafter 

called R.D.S.O.) basic drawings/designs/ employment schedules will be submitted by the Contractor 

to the Purchaser. If the R.D.S.O.’s drawings/designs/employment schedule is not revised, Contractor 

need not submit drawings/ designs/employment schedule In the event of Contractor suggesting any 

alteration/deviation in standard drawings he shall submit the retraced drawings with full calculations 

and justification of the change to the Purchaser. The Purchaser if convinced of the need of the 

alteration, shall be approach R.D.S.O. for necessary approval.


1.2.24. SUB-CONTRACTORS 

a) The Contractor may sub-let a part of the works under this contract and enter into contract 

with suppliers for supply of materials 

b) The names of all sub-Contractors proposed to be employed for execution of work or any part 

thereof including manufacture of components and fittings shall be submitted by the Contractor to the 

Purchaser and got approved by him before the Contractor enters into an agreement with the Sub- 

Contractor for the purpose. & 

c) The Contractor shall arrange for effective supervision of Sub-Contractor’s work and remain 

solely responsible for materials supplied and for works carried out on his behalf by the subcontractor/s. 

1.2.25. QUALITY ASSURANCE MATERIALS 

a) All the equipments, materials, fittings and components will be subject to quality control 

programme of the manufacturer, being part of the quality Assurance programme of the Contractor. 

The materials may also be inspected by the Purchaser or his representative either at the manufacture 

works or at the Contractor’s depot. The Purchaser or his representative shall have the right to be 

present during all the stages of manufacture and shall be accorded free of charge all reasonable 

facilities for inspections and testing as well as to examine the stage inspection report of the 

manufacture in addition to the quality audit which the contractor may institute as a part or his 

programme so as to satisfy himself that the materials are in accordance with specifications, approved 

drawings and designs and Purchaser’s prescribed quality Assurance Standards. 

b) ERECTION 

All erection work will also be subjected to the Quality Assurance Programme including 

inspection by the Purchaser or his representative to ensure that the work is done in accordance with 

the specifications and approved drawings and designs and Purchaser’s prescribed Quality Assurance 

Standards. 

c) EXPENSES OF PURCHASER’S REPRESENTATIVE 

All the expenses of Purchaser’s representative shall be borne by the Purchaser whether the 

inspected materials in finally utilized in work or not. 

d) The decision of the General Manager or his successor shall be final in respect of acceptability 

or otherwise of any material, fitting, components or equipments required for the work. 

e) QUALITY ASSURANCE PROGRAMME 

For proper control of quality and to ensure that the materials, equipments and fittings are 

manufactured according to specification and the erection is according to approved instructions, 

drawings, specifications, the Contractor shall adopt a suitable quality assurance programme to ensure 

quality at all necessary points, whether at manufacture’s works, or in his depot or at work site as 

well as during erection. Such quality assurance programme shall also meet the requirement of the 

Purchaser’s Prescribed Quality Assurance Standards. This programme of the Contractor shall 

generally cover the following. 

1. The organization to manage and implement the Quality Assurance Programme. 

2. The documentation control system:- 

(i) Basic control system 

(ii) Adopted at manufacturer’s works 

(iii) Adopted at the Contractor’s Depot and work site 

3. Procedure adopted for:- 

(i) Source Inspection


(ii) Incoming raw material inspection 

(iii) Verification of materials purchased. 

(iv) Fabrication controls 

(v) Site erection controls 

4. Inspection and Test Procedure for:- 

(i) Manufacturer and quality control procedure 

(ii) Field activities 

5. System of handling storage. 

6. System of quality audit. 

1 System of maintenance of records. 

2 For the purpose of obtaining ‘ On Account Payment’ (see para1.3.9.) the 

contractor shall submit along with invoice the documents and noted in the 

prescribed Quality Assurance Standard which should internals cover be 

following as may be applicable in each case.\ 

(i) Material test reports on raw materials used material type and routine test report on 

components specification. 

(ii) Inspection plan with reports of the inspection plan check points 

(ii) Routine test report 

(iii) Factory test results as required under the specification 

(iv) Quality audit report including test check report of Purchaser’ representative if any. 

1.2.26. CRANES – No crane will be provided to the Contractor except for erection of bridge mast. 

In case of erection of bridge mast, Crane will be provided at free of cost. 

1.2.27. Tower Wagon 

a) The Purchaser may provide tower wagon, if available, to the Contractor for final checking 

free of cost. 

b) LADDER TROLLEYS - 

In addition to tower wagon, the Contractor may use light ladder trolleys on tracks for carrying 

out installation of droppers and adjustments of traction overhead equipment. The ladder trolleys shall 

not weigh more than 200 kg. And should be capable of being removed from the track easily and 

quickly. The detailed drawings of these should be submitted within 3 months from the date of issue 

of Letter of Intent/Acceptance of Tender to enable the Purchaser to obtain approval from the 

competent authorities for the use at such trolleys on tracks, if required. 

k) In order to minimize block to the track the tenderer shall consider the working conditions on 

the sections and assess use of alternative methods of construction on a part or whole of the work. He 

should submit clear proposals along with financial implications if any to the Purchaser for such 

special methods of saving of blocks that could be obtained along with reduction / redundancy of the 

facilities being provided by the Railway in terms of Clauses 1.2.26, 1.2.27 and 1.2.28. 

1.2.28. TRAFFIC BLOCKS 

a) The Purchaser will make arrangements to obtain traffic block (hereinafter referred to as 

block) necessary for the running and operation of tower wagon and light ladder trolleys and track 

lorries for works to be carried out along or adjacent to the track (See 1.2.27. a). The Contractor shall, 

However, carry out maximum amount or work possible without blocks. Works such as grouting of 

traction masts muffing and erection of brackets shall invariably be done without blocks Installation 

of droppers and adjustment of traction over-head equipment may also be permitted to be carried out


with light ladder trolleys protected by banner flags in accordance with General and Subsidiary Rules 

of Indian Railways. 

b) Block will normally be granted any time during day or night to suit convenience of traffic 

operation. The Contractor shall equip himself to carry out all construction during night block also 

efficiently by suitable lighting equipment. The block granted will ordinarily be on one track at a time 

over a distance covered by one or two consecutive block sections. In case of blocks to be granted 

after sunset the Contractor will be informed at least 24 hours in advance. The duration of block, 

national and maximum which would ordinarily be granted on different tracks and in different 

sections, during day and/ or nighttime, is indicated in part-III, Block shall not be availed of by the 

Contractor when it is not possible for him to complete the specific fieldwork within the block period 

granted by the Purchaser. 

c) Block periods shall be counted from the time the track is placed at the Contractor’s disposal 

at the work spot till it is cleared by the Contractor. All blocks asked for and granted shall be 

reckoned in accordance with part 1.2.27. If by the contract completion date the total reckoned period 

of block works out to less than the specified number of block hours per kilometer of single track to 

be equipped as indicated in part-III, the Contractor shall be eligible for corresponding extension of 

time for completion of the work. 

d) Block will normally be granted for work trains or for carrying out other work in one block 

section except, when the work overlaps two adjacent block sections, when block will be granted over 

both the block sections. The contractor shall organize the various works so as to use fully the block 

granted to him. He shall ensure that none of the equipment obstructs at any time at any track for 

which he has not been granted a block. 

e) The contractor shall in consultation with the Purchaser submit a weekly block programme for 

works or for work trains 7 days in advance of the week for which the programme has been 

submitted. At the end of each week a comparison shall be made between the block periods asked for 

by he Contractor and that availed of by the Contractor, fraction of an hour in the total being ignored. 

f) Block will be subject to normal operating conditions and rules of the Railway. All formalities 

of exchanging private numbers etc. with the traffic control will be carried out by the Purchaser’s staff 

and for this purpose the Purchaser will depute a representative for each erection gang, who will be 

responsible for imposing traffic block and also removing the same after men, material and equipment 

have been cleared by the Contractor from running tracks and the some declared sage for traffic by 

the Purchaser’s representative incase or works involving safety of running tracks. 

The protection required for block working i.e. flagmen flags etc shall be provided by the 

contractor. Competency for the above shall however be given by the Railway authorities. 

g) Block required for carrying out works necessitated by the thefts pilferage accidents or such 

other incidents shall be granted by the Purchaser over and above the normal requirements of block 

and shall not be counted for the purpose of para 1.2.27(a). or 1.2.28 

h) Traffic blocks given after energisation (See 1.2.46) (a) shall not be reckoned for the purposes 

of Para 1.2.27 (d) or 1.2.28 (c). 

1.2.29 DEFAULT AND DELAY – 

The Contractor shall execute the work with due diligence and expedition keeping to the 

approved time schedule. Should he refuse or neglect to comply with any responsible orders given to 

him in writing by the Purchaser’s Engineer in connection with the work or contravene the provision 

of the Contract of the progress of work lags persistently behind the time schedule due to his neglect 

the Purchaser shall be at liberty to give seven days notice in writing to contractor requiring him to


make good the neglect or contravention complained of and should the Contractor fail to comply with 

the requisitions made in the notice within seven days from the receipt thereof, it shall be lawful for 

the Purchaser to take the work wholly or in part out of the contractor’s hands without any further 

reference and get the work or any part thereof, as the case may be completed by other agencies at the 

expense of the contractor without prejudice to any other right or remedy of the Purchaser. 

1.2.30 LOSS SUSTAINED DUE TO DEFAULT AND DELAY 

a) In the event of any loss to the Purchaser on account of execution and / or completion of the 

work or any part thereof by agencies other than the contractor, in terms of para 1.2.29, the Contractor 

shall be liable to reimburse the loss to the Purchaser without prejudice to the other rights and 

remedies of the Purchaser and the reimbursement in full or in part as the case may be shall be met at 

the option of the purchaser from out of all or any of the following sources, viz: 

i. Any amount due and payable to the contractor by the Purchaser on any account whatsoever; 

ii. The Contractor’s Security deposit in the hands of the Purchaser as far as available; and 

iii. Any other assets whatsoever of the Contractor 

b) In the event of reimbursement from out of sources. 

i) and/or (ii) above-mentioned the Purchaser shall have the right of appropriation suo-moto. 

NOTE: The above Para should be read in conjunction with Para 1.2.42. 

1.2.31. CORRECTNESS OF WORK AND MATERIALS: 

a) The contractor shall be solely responsible for the correctness of the position levels and 

dimensions of the works according to approved drawings, notwithstanding that he may have been 

assisted by the Purchaser or his men in setting out the same. 

b) If any dimension figured upon a drawing differs from that obtained by scaling the drawing, 

the figured dimension should be normally taken as correct unless it is prima facie mistake. But all 

such cases shall be brought to the notice of the Purchaser’s Engineers and the discrepancy set right 

before execution. 

1.2.32. CONTRACTOR’S RESPONSIBILITY FOR DISCREPANCY 

a) All designs and drawings submitted by the contractor shall be based on a thorough study and 

shall be such that the contractor is satisfied about their suitability. The purchaser’s approval will be 

based on these consideration, notwithstanding the approval communicated by the Purchaser, during 

the progress of the contract for designs and drawings, prototype samples of components, materials 

and equipment after inspection of material, after erection and adjustments to installations, the 

ultimate responsibility for correct design and execution of work shall rest with the contractor unless 

the Purchaser insists on adoption of his own designs in spite of the contractor not being agreeable to 

it. 

b) The contractor shall be responsible for and shall bear and pay the costs for any alteration of 

works arising from any discrepancies errors or omissions in the designs and drawings supplied by 

him. Whether such designs and drawings have been approved by the Purchaser or not. 

1.2.33. ADDITIONS & ALTERATIONS TO ERECTED EQUIPMENT 

The purchaser may additional installations or modifications to be carried out on the works he 

deems necessary, either during the execution of after a part or whole of the installations coming 

within the purview of the contract has been put into commercial service Further it may be necessary 

and expedient to energise overhead equipment which has been completed and finally adjusted in 

portions in yards. This will necessitate erection of new equipment in the vicinity of joining energized 

equipment in case the prices for such additional works or modifications are not covered by the 

schedule of prices and are such that either party considers additional prices for such works justified


such additional works or modifications shall be carried out only after the additional prices proposed 

by the Contractor are accepted by the Purchaser. In case additional installations or modifications are 

required to be carried out under this Para. The purchaser shall grant a reasonable extension of time, 

should it be necessary. 

1.2.34. QUANTUM OF WORK & MATERIALS 

The approximate quantities of various items of works are included in schedule of prices. The 

Contract value may vary within plus or minus 25% of the grand total of Schedule-1, as included in 

the Letter of Acceptance of Tender, Such variations shall in no degree affect the validity of the 

Contract and it shall be performed by the Contractor as provided there in and be subjected to the 

conditions, stipulations and obligations originally and expressly included for in specifications and 

drawings and the amount to be paid therefore shall be calculated in accordance with the accepted 

schedule of rates. Wherever a contingency arises and if the Railways so desire the contractor will 

undertake additional quantum of work even beyond the 25% variation at the accepted schedule of 

rates and on original terms and conditions wherever applicable on mutually agreed additional time 

within the validity of contract. 

NOTE 

As specified above in sub-clause 1.2.34 and reiterated here for clarification the 25% limit for 

variation allowance under the contract without any changes in rates or condition of the contract is on 

the contract value as a whole as included in the Letter of Acceptance of the Tender and not on the 

value of work on any individual item. 

1.2.35. COMPETENT SUPERVISORS 

a) The erection of all equipment according to the specifications will be done by the Contractor 

at his cost. For this purpose the Contractor shall employ competent representatives to supervise the 

erections of the equipment and the carrying out of the works at all stages. The said representatives 

shall be present at site during working hours and any written orders of instructions which the 

Purchaser’s Engineers may give to the said representatives of the Contractor shall be deemed to 

have been duly given or communicated to the Contractor. 

b) The contractor or his representative will accompany the Purchaser’s Engineers on inspection 

in proceed to their offices whenever called upon to do so. 

c) The Contractor’s representative shall give the necessary direction at his workmen and ensure 

that they execute their work in sound and proper manner. He shall complex only such supervisors, 

worker and labour for the execution of any of the works as are careful and skilled in their respective 

trades and callings. If and whenever required by the purchaser’s Engineers the Contractor shall 

submit a correct return showing the names of all personnel employed by him for the contract. In the 

event of the Purchaser’s Engineer being of the opinion that the Contractor is not employing a 

sufficient number of the competent staff as is necessary for the proper execution of the work within 

the time prescribed, the Contractor shall forthwith on receiving intimation to this effect take on the 

additional number of staff as advised by the Purchaser’s Engineers. 

1.2.36. TRAINING OF PURCHASER’S STAFF 

The Contractor shall train free of charge in manner mutually of the purchaser and contractor 

such staff of the purchaser as may be required. The wages and allowances and all other associated 

expenses of such staff shall be paid by the purchaser. 

1.2.37. WORK BY OTHER AGENCIES : 

(a) Any other works undertaken at the same time by the purchaser or the Railway director or 

through some other agencies at the same time or section where the contractor is carrying out his 

work will not entitle the contractor to prefer any claim regarding any delay or hindrance he may 

have to face on this account but the purchaser shall grant a reasonable extension of time to the


contractor. The contractor shall comply with any reasonable extension of time to the contractor. The 

contractor shall comply with any instruction, which may be given to him by the purchaser in order to 

permit simultaneous execution of his own works and those undertaken by other contractors or the 

Railway without being entitled on this account to any extra charge. 

(b) The contractor shall not be entitled to any extra payment due to hindrance resulting form 

normal Railway operations, such as delay on account of adequate number of and duration of blocks 

not being-granted, operational delay in movement of work trains etc. but the purchaser shall grant a 

reasonable extension of time to the contractor . 

(c) The contractor shall take note that owing to works being carried out by the purchaser and 

others, there may be breaks in the continuity of the locations for work owing to works such as track 

remodeling being undertaken. But the contractor shall not be entitled to claim any extra payment on 

account of such breaks. However, such breaks in the continuity of work would be reasonable ground 

for extension date’s for the work. 

(d) If the purchaser is unable to supply materials to the contractor as specified in the contract, in 

time, the contractor shall not be entitled to any extra payment on account of such delay in supply. 

However, such delays in supply will be reasonable ground of extension of completion date/s for the 

work. 

(e) In cases where the lines to be electrified are not in their final position, the purchaser will 

furnish the remodeling plans for such lines to the contractor and / or peg out the altered or for 

remodeled position of the tracks to be electrified to enable preparation of designs and assessment of 

quantities of components required for the work. However, the contractor may not undertake 

fieldwork on such track till they are in final position. The contractor shall not be entitled to any 

compensation in case of delay in such remodeling work, but the purchaser will grant a reasonable 

extension of the time for completion. 

(f) In course of checking the overhead equipment layout plans, the contractor shall prepare a list 

of infringement, if any exist, and advise the purchaser in time. The purchaser will arrange for 

removal of these infringements. The works, which will be carried out by the purchaser are detailed 

below. 

(i) Alterations of slewing of tracks to accommodate traction structures of overhead equipment or 

to suit the Railway requirement. 

(ii) Alterations of over bridge, tunnel, foot-over and irrigation through, raising of bridges or 

troughs, or lowering of track to give sufficient clearance for overhead equipments. 

(iii) Protection at over bridge to prevent accidental or malicious interference with overhead 

equipment. 

(iv) In cuttings, any work necessary to provide clearance for traction structures. 

(v) At viaducts and bridges, any alterations required to enable traction structure to be 

accommodated. 

(vi) Alterations to stations buildings, signal gantries, signal cabins and other similar 

constructions, which may be required for erection of overhead equipment, with requisite 

electrical clearances. 

(vii) Deleted. 

(viii) Removal of signal, telephones and power lines and guys to enable overhead equipment to be 

erected, with requisite electrical clearances. 

(ix) Any blasting work required for excavation in rock other than for foundations.


(x) Any rail strapping or other similar work/s necessary for the installation of track structures and 

overhead equipment on bridges and overbridges. 

(xi) Any special steel work and fittings for attachment for masts / portals on steel girder of other 

bridges, or for attachment to other non-traction structures of the Railway for carrying or 

anchoring overhead equipment conductors. 

(xii) Dismantling and drilling of pipers of bridges and walls, supply and grouting of dowel pins or 

holding down bolts, in the piers of bridges or walls. 

(xiii) Clearing the way and removing all infringements for erection of 25KV feeder lines form grid 

sub-stations. 

NOTE : Chopping / turning of tree branches required for erection of overhead equipment shall be 

done by the contractor . At least four meter clearance should be available between the nearest OHE 

structure / components and tree branches no extra cost will be payable for this work to the contractor. 

(g) In the course of checking layout plans and general arrangement drawings for switching and/ 

or booster stations, the contractor shall prepare a list of infringements if any exist, and advise the 

purchaser in time. The purchaser will arrange for removal of these infringements at his own cost. 

1.2.38 ACCESS TO WORK SITE : 

(a) Access to the site for the purpose of this contractors shall be accorded to the contractor by 

the purchaser at all times. In the execution of the work no person other then the contractor 

or his duly appointed representative or approved sub-contractor and bonafide workmen 

shall have access to the site. Access to the site of work at all times shall be allowed by the 

contractor to officials or approved representatives of the purchaser or to Railway Staff for 

purpose of maintenance. 

(b) The purchaser or his authorized representative shall have the right to refuse admission to 

the work site of any person employed by the contractor whom the purchaser or his 

Engineer may consider undesirable 

(c) The purchaser or his Engineer shall be at liberty to object to the employment or nay 

person as contractor’s Agent / Representative, approval sub-contractor’s supervisors, 

workman or labourer for execution of this contract on the ground of misconduct 

incompetence or negligence. The contractor on receipt of notice of such objection in 

writing from the purchase or his place any other competent person and shall not allow the 

person so objected to, to enter of the site of work subsequently or remain in the executive 

of the contract. The purchaser will not be liable to pay any cost or damage on this account 

1.2.39 INFRINGEMENT OF PATENTS : 

(a) The contractor is forbidden to use any patents or registered drawings, process of patterns in 

fulfilling his contract without the previous consent in writing of the owner of such patents, drawings, 

patterns or trademarks, except where these are specified by the purchaser himself. Royalties where 

payable for the use of such patented processes registered drawings or patterns shall be borne 

exclusively by the contractor. The contractor shall advise the purchaser of any proprietary rights that 

may exist on such processes, drawings or patterns, which he may use of his own accord. 

(b) In the case of patents taken out by the contractor of the drawings or patterns registered by 

him, or of those patents, drawings or patterns for which he holds a license the signing of the contract 

automatically gives the purchaser the right to repair by himself the purchased articles covered by the 

patent or by any person or body chosen by him and to obtain form any sources he desires the 

components parts required by him in carrying out the repair work. In the event of infringement of 

any patent rights due to above action of the purchaser, he shall be entitled to claim damages form the


contractor on the grounds of any loss of any nature which he may suffer e.g. in the case of 

attachment because of counterfeiting. 

(c) INDEMNIFICATION BY CONTRACTOR : 

In the event of nay claim or demand being made or action being brought against the 

purchaser for infringement of letters patent in respect of nay equipment, machine, plant work of 

thing used or supplied by the contractor under this contract or in respect of any method of using or 

working by the purchaser of such equipment, machine, plant, work or thing, the contractor shall 

indemnify the purchaser and keep him indemnified and harmless against all claims, costs, charges 

and expenses arising from or incurred by reason of such claim provided that the purchaser shall 

notify the contractor immediately after any claim is made and that the contractor shall be at liberty, if 

he so desires with the assistance of the purchaser if required but at the contractor’s expense to 

conduct all negotiations for the settlement of the same or any litigations that may arise there form 

and provided that no such equipment, machine, plant, work or thing, shall be used by the purchaser 

for any purpose or in any manner other than that for which they have been supplied by the contractor 

and specified under this contract. 

1.2.40. INSURANCE : 

(a) The contractor shall take out and keep in force a policy or policies of insurance against all 

liabilities of the contractor or the purchaser at common law or under any statute in respect of 

accidents to parsons who shall be employed by the contractor in or about the site of the contractor’s 

offices for the purpose of carrying out the works on the site. The contractor shall also take out and 

keep in force a policy or policies of insurance against all recognized risks to their offices and depots. 

Such insurance shall in all respects be to the approval of the purchaser and if he so requires, in this 

his name. 

(b) INSURANCE OF MATERIALS AND INSTALLATION : 

The contractor shall take out and keep in force a policy or policies of insurance for all 

materials in storage and traction installations excluding foundations under erection and/ or erected 

until such materials and installations are provisionally handed over to the purchaser. For this 

purpose, the traction installations in a section see para 1.2.46 shall be deemed to have been 

provisionally handed over, when a provisional Acceptance Certificate is issued for the section or the 

traction installations in the section are commissioned or on the expiry of three months after 

installations are given ready in all respect for handing over as per para 1.2 (a), whichever is earlier, 

for commercial use. The contractor shall not be liable for losses, damages to equipments erected in 

the course of erection or in store at the contractor’s depot, in consequence of mutiny or other similar 

cause over which the contractor has no control and which cannot he insured. Such losses or damages 

shall be the liability of the purchaser and if required by the purchaser, be made good by the 

contractor, at the cost of purchaser. 

NOTE : It may be noted that the beneficiary of the insurance policy should be Rly or the policies 

should be pledged in favour of Railways. The contractor shall keep the policy policies current till the 

installations are provisionally handed over to the purchaser. It may also be noted that in the event of 

contractor’s failure to keep the policy current and alive, renewal of the policy will be done by the 

purchaser, for which the cost of the premium will be recovered from the contractor as per the 

procedure laid down in clause 1.3.10, Chapter – III. 

(c) The contractor should, however, insure the stores brought to site, against risks in consequence 

of war and invasion, as required under the Emergency Risk (goods) Insurance Act in force form time 

to time.


NOTE : Deleted. 

(d) The contractor shall take out all insurance covers in connection with this contract with 

General Insurance Corporation of India. 

(e) Deleted. 

(f) For purpose of enabling the contractor to take the insurance cover in connection with this 

contract, the purchaser will advise the approximate price of all the Railway supply 

materials tow months before the same are handed over to the contractor at his depot. 

However, the recovery in case of shortages of such materials will be made in accordance 

with provisions as per G.C.C. 

1.2.41. ACCIDENT : 

(a) The contractor shall, in respect of all staff engaged by him or by his sub- contractor, 

indemnify and keep the purchaser at all times indemnified and protected against claims made 

liabilities incurred under workmen’s compensations Act. The Factories Act and the payment 

of wages Act and rules made there under form time to time or under any other labour and 

Industrial legislation made from time to time. 

(b) The contractor shall indemnify and keep the purchaser indemnified and harmless against 

suits, clams, demands, costs, charges or expenses arising in connection with any death or 

injury sustained by any person or persons within the Railway premises and any loss or 

damage to Railway property sustained, due to acts or omission of the contractor, his subcontractor, 

his agents or his staff during the execution of this contract irrespective of whether 

such liability arises under the Workmen’s Compensation Act. or any other scheme in force 

for the time being. 

(c) The contractor’s liability to meet third party claims of the type outlined above will be 

applicable only in cases where accidents have been caused by bad design workmanship, 

material or negligence on the part of the Contractor and further the liability of the Contractor 

will be limited to Rs. 25 lacks for any one accident. 

(d) The contractor shall be responsible for all repairs and rectification of damages to traction 

installations erected or under erection due to railway accident, thefts pilferage or any other 

cause, without delay to minimize or to avoid traffic detentions in a section until the 

installations are provisionally handed over to the Purchaser (See para 1.2.46.) 

(e) CLEARING DAMAGED INSTALLATIONS - 

The Contractor shall at has cost arrange for expeditious clearing of the railway track/s or 

traction installations instructing or fouling the track/s when they are damaged as a result of railway 

accident or any other cause, upon the oral / telephonic /written instructions from the Purchaser. If the 

Contractor fails to clear the tracks expeditiously and within reasonable time, the purchaser will 

arrange to clear the track/s or the damaged traction installing and recover the expenses incurred from 

the contractor. If during such clearance operations further damage is caused to the installations, the 

purchaser is not liable to reimburse the contractor the cost of such further damage in the installations. 

(f) The contractor shall arrange for temporary slewing of overhead equipment for crane 

operation for derailment of rolling stock due to accidents for which the contractor is not responsible, 

if required by the Railway or the purchaser, at the cost of the purchaser (Item 31 of schedule – I ) 

until the installations are provisionally handed over to the purchaser. If the contractor fails to slew 

the overhead equipment within reasonable time incurred form the contractor. After the crane 

operations are completed the contractor shall restore the overhead equipment to its normal positions.


NOTE for sub-para (d) & (e) :- 

For the works mentioned in (d) and (e) above the contractor will be granted blocks and work train/s 

will be made available to him over and above the normal requirements of block and works train(s) 

which shall not be counted for the purpose of para 1.2.27 (d) or 1.2.38 (c) [See para 1.2.28 (g)]. 

1.2.42. CONTRACTOR’S LIABILITY FOR COSTS AND DAMAGES : 

(a) Withholding and lien in respect of sump claimed 

Whenever any claim or claims for payment of a sum of money arises cut of or under the contract 

against the contractor, the purchaser shall be entitled to withhold and also have lien to retain such 

sum or sums in whole or in part from the security, if any deposited by the contractor, the purchaser 

shall be entitled to withhold in said cash security deposit or the security if any, furnished as the case 

may be and also have lien over the same pending finalization or adjudication of any such claim. In 

the event of the security being insufficient to cover the claimed amount or amounts referred to supra 

from any sum of sums found payable or which at nay time thereafter may become payable to the 

contractor under the same contract or any other Department of the Central Government pending 

finalization or adjudication of any such claim. It is AN agreed term of the contract that the sum of 

money or moneys of with held or retained under the lien 

referred to by the purchaser till the claim arising out of or under the contract is determined by the 

arbitrator (if the contract is governed by the arbitration clause) or by the competent court as the case 

may be and that the contractor will have no claim for interest or damages whatsoever on any account 

in respect of such withholding or retention under the lien referred to supra and duly notified as such 

to the contractor. If the contractor is a partnership firm or a limited company, the purchaser shall be 

entitled to withhold and also have a lien to retain to wards such claimed amount or amounts in whole 

or in part form any sun found payable to any partner/ limited company, as the case may be, whether 

in his individual capacity or otherwise. 

(a) Any sum or sums of money due and payable to the contractor (including the security deposit 

returnable to him) under the contract may be withheld or retained by way of lien the purchase against 

nay claim of this or nay other Railway or any other Departments of the Central Government in 

respect of payment of a sum of money arising out of or under nay other contract made by the 

contractor with this or any other Railway or nay other Railway or nay other department of the 

Central Government. 

(b) It is an agreed term of the contract that the sum of money withheld or retained under this 

clause by the purchaser will be kept withheld or retained as such by the purchaser will the claim 

arising out of or under any other contract is either mutually settled or determined by the Arbitrator, if 

the other contract is governed by the Arbitrator, if the other contract is governed by the Arbitration 

shall have no claim or interest or damages whatsoever on may be, and that the contractor shall have 

no this account or any other grounds in respect of any sum of money withheld or retained under this 

clause and duly notified to the contractor. 

1.2.43. SAFETY MEASURES : 

(a) The contractor shall take all precautionary measures in order to ensure the protection of his 

own personnel moving or working on the Railway premises, but shall then conform to the rules and 

regulations of the Railway. If and when, in the course of the work there is likely to be nay danger to 

persons in the employment of the contractor due to running traffic while working in the Railway 

sidings and premises, the contractor shall provide necessary protection i.e. Flagmen, Flag etc 

required in track working. Competency for the above shall, however be given by the Railway 

authorities. The purchaser shall remain indemnified by the contractor in the event of any accident


occurring in the normal course of work, arising out of the failure of contractor or his men to exercise 

reasonable precaution at all places of work. 

(b) Blasting of rock for foundation work shall be done only after due notice is given to the 

purchase and time/s and date/s for blasting operations greed to by the purchaser blasting if required 

to be done in the vicinity of the track, shall not be undertake and the purchaser’s flagmen on duty 

take necessary steps to protect trains and the track is adequately protected by the contractor against 

damage by blasted rocks. The contractor shall follow detailed interactions, which will be issued to 

him regarding blasting operations in the vicinity of tracks. The flagmen or protection of trains and 

the track in such cases will be appointed by the purchaser and no expenses on this account will be 

charge form the contractor. 

(c) During stringing operations every case shall be taken to prevent conductor-hanging low over 

tracks on which traffic block has not been given. All conductors shall be pulled out before traffic 

black so that such conductors do not infringe with moving traffic. 

(d) Ladder trolleys shall be used with caution. They shall not be put on tracks unit the Flagmen 

are on duty to protect the trolleys and the Purchaser’s representative authorized in writing for 

the trolleys to be put on the tracks. Ladder trolleys shall be promptly removed on interactions 

form the Purchaser’s representative and well in advance of trains. No flagmen for the above 

job will be provided by the contractor. 

(e) While working within station limits, especially on passenger platforms, the Contractor shall 

ensure that at all times sufficient space is left for free movement of passenger traffic. He must cover 

and/or barricade the excavations carried out in such areas and continue to maintain these till the work 

is completed, with a view to avoid and accident to public or to Railway Staff. 

(g) The works must be carried out most carefully without any infringement of the Indian Railway 

Act or the General and Subsidiary Rules in force on the Railway in such a way that they do not 

hinder Railway operation of affect the proper functioning or damage any railway equipment’s 

structure or rolling stock except as agreed to by the Purchaser provided that all damage and 

disfiguration caused by the Contractor to any Railway property must be made good by the Contractor 

at his own cost failing which cost of such repairs shall be recovered from the Contractor. 

(h) If safety of track or track drainage etc. is affected, as a consequence of works undertaken by 

the Contractor, the purchaser shall, after take immediate steps to restore normal conditions. In case of 

delay, the purchaser shall, after giving due notice to the Contractor in writing, take necessary steps 

and recover the costs form the Contractor. 

(i) Moreover, if any time the works to be carried out directly concern the safety of trains, the 

Contractor’s staff must comply fully with the Railway regulations given to him reason operate an 

installation concerning train safety or train movement. They shall notify the authorized 

representative of the Purchaser who will take all necessary steps in this regard. 

(j) The Contractor shall be responsible for safe custody of all equipment’s till provisional 

acceptance. 

(k) The Contractor’s liability to meet third party claims of the type outlined above will be 

applicable only in cases where accidents have been caused by bad design workmanship material or 

negligence on the part of the Contractor and further the liability of the Contractor will be limited to 

Rs. 5 lacks for any one accidents. 

(l) The Contractor shall ensure that unauthorized, careless or inadvertent operation of switch 

gear, which may result in accident to staff and/ or damage to equipment, does not occur. 

(m) The Contractor shall abide by all instructions issued by the Purchaser form


time to time in connection with protection/ safety of track/ Railway installation / personnel as well as 

quality control. The Contractor should not leave the excavated pits unfilled overnight. Due to any 

reason if it become necessary to leave the pit untilled overnight, it should be filled back effectively 

with sand bags to the satisfaction of the Purchaser’s representative. 

1.2.44. RECOVERY / PENALTY FOR DELAY IN COMPLETION 

The time for completing the works by the date or extend date fixed for completion shall be 

deemed to be the essential of the contract and if the contractor shall fail to complete the works within 

the time prescribed, the Railway shall, satisfied that the works can be completed by the contractor 

within a reasonable short time, thereafter be entitled without prejudice to any other right or remedy 

available the behalf, to recover the by way ascertained on liquidated damages a sum equivalent to 

one half of one percent of contract value of the works for each week or part of week thereof subject 

to0 maximum of 10% of the value of contract, Contractor is in default and allow the contractor such 

further extension of time as the Engineer may decide. If Railway is not satisfied that the works can 

be completed by the Contractor and in the event of failure on the part the contractor to complete the 

works within the further extension of time allowed as aforesaid the Railway shall entitle, without 

prejudice to any other right or remedies available on the behalf, to appropriate in contractor security 

deposit and rescind the contract under clause 1.2.29 and 1.2.30 of the conditions, whether or not 

actual damage is caused by defaults. 

NOTE : For the purpose of this para the value of the work shall be calculated on the basis of unit 

prices including in Schedule-I 

1.2.45 EXTENSION OF TIME : 

(1) If such a failure as aforesaid shall have arisen form any cause which the Purchaser may admit 

as being a reasonable ground for extension of time, the Chief Administrative Officer, Chief 

Electrical Engineer or his successor(s)/ nominee shall allow such additional time as he may in his 

absolute discretion consider to be reasonably justified by the circumstance of the case. 

1.2.46 PROVISIONAL ACCEPTANCE 

(a) Immediately after completion of works at each switching/ booster station or after completion 

of work in a section of overhead equipment between tow consecutive switching stations 

hereinafter referred to as a sub-group the contractor shall certify and advise the purchaser in 

writing that the installation is (i) Complete (ii) Ready for advise satisfactory commercial 

service and (iii) Ready to be handed over. He will also place at the disposal of the Purchaser 

the required staff for checking it and putting it into operation. 

(b) The test or tests as stipulated in part-II, Chapter VII of the specification excluding power 

collection tests which would be carried out subsequently in connection with the taking over 

by the Purchaser of the equipment and installation shall be carried out jointly by the 

purchaser and the Contractor within a month after the receipt of the Contractor’s 

notifications, as stated in sub-para above. 

(c) After inspection and satisfactory conclusion of tests and when the purchaser is satisfied with 

the satisfactory working of the installations, he will issue a “Provisional Acceptance 

Certificate” which would be signed by both the parties. The provisional Acceptance 

Certificate will not be withheld for any minor defects. 

(d) Should the result/s of inspection and tests/s be not satisfactory, an extension of the month 

will be granted to the Contractor to make good the defects and deficiencies pointed out by the 

purchaser. Fresh inspection and tests will then be carried out after the contractor has 

attended to the defects and deficiencies. If these tests are also not satisfactory the purchaser


may proceed at the Contractor’s expenses by all means deemed expedient, to the purchase 

may proceed at the Contractor’s expenses by all means deemed expedient, to have the 

installation made satisfactory until they comply with the specifications and approved 

drawings and designs. 

(e) In such a case or in case of delay in completing the work under this contract within the time 

limit, the purchaser reserves the right if he deems it possible to use in a reasonable manner 

any section or any part of the section even if some installations of the sections are not 

completely erected. The purchaser will give to the Contractor for this purpose seven days 

previous notice. The Contractor shall then take at his own expense all necessary steps to 

complete the works in accordance with the provisions of the contract reasons other then for 

which the contractor is responsible, the provisional Acceptance Certificate’ shall be issued at 

or within a mutually agreed reasonable period not exceeding three months after completion 

of the relevant sections as indicated in sub-para/s above. 

NOTE : 

1) Provisional Acceptance Certificate for each section will be issued immediately after all tests 

(excluding power collection tests) are completed to the satisfaction of the purchaser. Should the 

purchaser be unable to complete the tests and energise the line within a reasonable time which shall 

not exceed 1 month form the date of Contractor’s notification the issue of provisional Acceptance 

Certificate shall not be delayed and shall be issued within a maximum time of 3 months after 

notification under para 1.2.47(a) has been given. The power collection tests shall normally be carries 

out for the entire group/s within three months of the date of energisation of the last section in the 

group/s. 

2) The issue of provisional Acceptance Certificate shall not be withheld for rectification of 

minor defects, which may reasonably be considered not essential for energisation and operation of 

installation. In such cases only the value of materials and cost of rectification of minor defects shall 

be withheld form the payments of provisional Acceptance Certification is completed. 

1.2.47 DEFECTIVE EQUIPMENTS TO BE CHANGED 

Notwithstanding the issue of a provisional Acceptance Certificate and partial or full 

use of any equipment, if the completed equipment of any portion thereof before finally taken over at 

the end of the guarantee period be found to be or to have become defective in course of usage by the 

Railway due to faulty material, design or workmanship or otherwise fails to fulfill the requirement of 

the Contract and/ or its purpose, the workmanship or otherwise fails to fulfill the requirement of the 

Contractor and/ or its purpose the purchaser shall normally give the contractor prompt notice setting 

forth the particulars of each defects or failure and the contractor shall forthwith make the defects 

good or modify or replace the equipment as may be directed by the purchaser Engineer at his own 

cost in all respects to make it comply satisfactorily with the said requirements should the contractor 

fail to do so within a reasonable time the service of the said notice upon him or should time not 

permit of service of such notice the purchaser may repair or reject and replace the whole or part of 

such defective equipment as the case may be at the cost of the contractor. The contractor’s full 

liability under this clause shall be satisfied by the payment to the purchaser of the extra total cost, if 

any of such replacement delivered and erected as provided for in the original contract, such extra 

cost being the ascertained difference between the price paid by the purchaser under the provisions 

above mentioned, for such replacement and the contractor’s price for the plant so replaced, plus the 

sum, if any, paid by the purchaser not so replace the rejected equipment within a reasonable time, the


contractor of all moneys paid by the purchaser to him in respect of such rejected equipment. 

Rejected/ defective materials shall be returned to the contractor to the extent possible. 

b) Provisions of this para will apply only in respect of the equipment’s and components supplied 

by the contractor or his sub-contractor. 

1.2.48 USE OF REJECTED EQUIPMENT 

In the event of such rejection as aforesaid, the purchaser shall, without prejudice to his other 

rights and remedies and in particular, without prejudice to his rights under the clause just preceding 

be untitled to the use of the rejected equipment for a time the reasonably sufficient to enable him to 

obtain other replacement equipment. During such period, if the rejected equipment is used 

commercially, the contractor shall not be entitled to the payment on eneragisation (1.2.14) until such 

rejected equipment is rectified and/ or replaced, but the purchaser shall not be entitled to claim any 

damages arising out of rejected equipment in respect of such period. 

1.2.49 GUARANTEE 

(a) The contractor shall guarantee satisfactory working of the installations erected by him, for a 

period of twelve months form the date of commercial operation or form the date of provisional 

Acceptance of each section (para-1.2.46) by the purchaser, whichever is earlier. The guarantee 

for spares should be coincident with the guarantee for erected equipment. 

(b) During this period of guarantee the contractor shall keep available an experienced engineer and 

necessary equipment to attend to any defective installations resulting form defective erection 

and/ or defects in the equipment supplied by the contractor. This engineer shall not attend to 

rectification of defects, which arise out of normal wear and engineer shall not attend to 

rectification of defects, which arise our of normal wear and tear and come within the purview of 

routine maintenance work. The contractor necessary due to faulty materials, design or 

workmanship for the satisfactory working of the equipment. The final decision shall rest with 

the General Manager /CAO (CON)/ Chief Electrical Engineer/ o his successor(s) / Nominee. 

(c) During the period of guarantee the contractor shall be liable for the replacement at site or any 

parts which may be found defective in the equipment whether such equipment be of his own 

manufacture or those of his sub-contractors, whether arising from faulty design, materials, 

workmanship or negligence in any manner on the part of the contractor provided always that 

such defective parts as are not reasonable at the promptly returned to the contractor if so 

required by his at his (Contractor’s) own expenses. In case of type defects in contractor’s 

equipment and components detected during the guarantee period, Contractor should replace all 

such items irrespective of the fact whether all such items have failed or not. The contractor shall 

bear the cost of repair carried out on his behalf by the purchaser at site. In such a case, the 

contractor shall be informed in advance of the works propose to be carried out by the purchaser. 

(d) If it becomes necessary for the contractor to replace or renew any defective portion of the 

equipment under the para aforesaid then the provisions of the said para shall also apply to the 

portions of the equipment so replace or renewed until the expiration of six months from the data 

of such replacement or renewal or until the end of the above mentioned period (see sub-para- 

1.2.49 (a)) whichever is later. Such extension shall not apply case of defects shall not apply in 

case of defects of a minor nature, the decision of the General Manager or his successor/ 

nominee being final in the matter. If any defect be not remedied within at the contractor’s risk 

and expense, but without prejudice to any other rights and remedies which the purchaser may 

have against the contractor in respect of such defects of faults.


(e) The repaired or renewed parts shall be delivered and erected on site free of charge to the 

purchaser. 

(f) Any materials, fittings components or equipment’s supplied under 1.2.34 shall also be covered 

by the provisions of this paragraph. The liability of the contractor under the guarantee will be 

limited to re-supply of equipment’s, components depot or, in the event of closure of the depot, 

at the stores depot of the Engineer-in-charge of maintenance of overhead equipment of the 

section covered by the contract. 

(g) In the case of materials, components, fittings and equipment’s supplied by the purchaser under 

para 1.2.20(b), no liability will rest on the contractor for failures on account of defective 

materials if not yet erected on line will be returned by the contractor to the purchaser and such 

quantities will be considered for the purpose of final reconciliation over and above allowance 

PERMISSIBLE. 

1.2.50 FINAL ACCEPTANCE 

(a) The final acceptance of the entire equipment installed in the section shall take effect from the 

date of expiry of the period of guarantee as defined in Para-1.2.49 of the expiry of the last of 

the respective periods of guarantee of various sections for which provisional Acceptance 

Certificates are issued or brought into commercial operation, provided in any case that the 

contractor has complied fully with his obligations under clause 1.2.49 in respect of each 

location o of the section, provided also that the attention has been paid by way of 

maintenance by the purchaser. 

(b) If on the other hand the contractor has not so complied with his obligation under para 1.2.49 

in respect of any section, the purchaser may either extend the period of guarantee in respect 

of that section until the necessary works are carried out by the contractor or carry out those 

works or being them carried out suo-moto on behalf of the contractor at the contractor’s 

expenses after expiry of the period of guarantee for each section, a certificate of final 

acceptance for the section shall be issued by the purchaser and the last of such certificate will 

be called the last and final acceptance certificate. The contract shall not be considered as 

completed until the issue of final acceptance certificate by the purchaser. 

(c) The purchaser shall not be liable to the contractor for any matter arising out of or in 

connection with the contract or execution of the work unless the contractor shall have made a 

claim in writing in respect thereof before the issue of final acceptance certificate under this 

clause. Notwithstanding the issue of final acceptance certificate, the contractor and the 

purchaser (subject to sub-clause as above) shall remain liable for fulfillment of any obligation 

incurred under the provision of the contract prior to the issue of final and for determining the 

nature and extent of such obligation the contract shall be deemed to remain in force between 

the parties hereto. 

1.2.51 PAYMENT 

Payments will be governed by the terms specified in part-I Chapter III and in accordance with 

accepted schedule of price read with relevant parts of the other parts and Chapters of the Tender 

Paper. The purchaser retains the right to withhold money due to the contractor arising out of this 

contract for any default of the contractor form other contracts, which the contractor may have with 

the Government of India. 

(i) The contractor shall whenever required, produce or cause to be produced for examination by the 

purchase quotation/invoice, cost or other account, book of account voucher, receipt letter, 

memorandum, paper or writing or any copy of or extract form any such document and also


furnish information and returns verified in such manner as any be required in any case relating 

to the execution of the this contract or relevant for verifying or ascertaining the cost of the 

execution of this contract (the decision of the purchaser on the question of relevancy of any 

documents, information or return being final and binding on the parties). The contractor shall 

similarly produce vouchers etc. required, to prove to the purchaser that materials supplied by 

him are in accordance with the specifications laid down in the contract. 

(ii) If any portion or the work be carried out by a sub-contractor or any subsidiary allied form or 

company the purchaser shall have power to secure the books such sub-contractor or any 

subsidiary or allied firm or company through the contractor and such books shall be open to his 

inspection. The contractor should seek prior permission from the purchaser for subletting whole 

and / or part of the work to any sub-contractor. 

(iii) It is an agreed terms of the contract that the purchaser reserves to itself the right to carry out 

post-payment Audit and / or technical examination of the works and the final bill, including all 

supporting vouchers, abstracts etc. and to make a claim on the examination any over payment to 

him is discovered have been made in respect of any work done or alleged to have been done by 

him under the contract. 

1.2.52 SITE CLEARANCE 

(a) At the end of each spell or work and on completion of the work the contractor shall as a part 

of his contractual obligation, leave the tracts, switching booster station uses and their 

approaches store yards etc. cleared of rubbish and obstruction of all kinds according to the 

instructions of the purchasers representatives. Besides he shall take all necessary steps in the 

course of the execution of the works to avoid the presence of lease earth and ballast on 

platforms, in drainage on the track formation and pathways in the vicinity. If within a 

fortnight of completion of the particular item of site work the refuse is not cleared, the 

purchaser will arrange to get them removed at the cost of the contractor. However, before the 

purchaser actually gets the site cleared he shall send intimation in writing to the contractor 

expressing his intention. 

(b) The storage of equipment, tools and machinery used by the contractor shall be done in an 

orderly manner and anything used by the contractor for execution of the works shall in no 

way constitute a danger or hindrance to the working of the Railway or to the movement of its 

staff or passengers. 

1.2.53 EQUIPMENTS, COMPONENTS AND MATERIALS RECEIVED FOR WORK 

The contractor shall utilise all equipment, components or materials, produced specifically for 

the purpose of execution of the work in the work of other requirements. Any surplus materials left 

over at the end of the work shall not be disposed off without prior approval of the purchaser in 

writing. The purchaser may within a period of six months form the date of provisional Acceptance of 

the last section, switching/ Booster station notify the contractor of the purchaser’s interest in any or 

all of the surplus materials and shall have the right to take over the materials as indicated at prices in 

schedule. The materials so notified by the purchaser shall take over by the purchaser and paid for in 

full. The contractor may use in any manner deemed fit only such surplus materials which are not 

covered by the purchaser’s notification after getting the approval of the purchaser in writing. 

1.2.54 ARBITRATION 

Arbitration & Consideration Ordinance Act 1996 which has been incorporated as clause no.- 

63 & 64 of general condition of contract (G.C.C.) is applicable in this case .


1.2.55 PAYMENT DURING ARBITRATION 

Work under the contract shall unless otherwise directed by the purchaser continue during the 

Arbitration proceedings and no payment due to or payable be purchaser shall be withheld on account 

of such proceedings. Notwithstanding any one contained herein, the Arbitrators/ Presiding 

Arbitrators, as the case may be shall be full authority to direct with holding of any payment of such 

action is considered of proper at any time. 

1.2.56 REFUND OF SECURITY DEPOSIT 

(a) After issue of the certificate of Final Acceptance as defined in 1.2.50 and provided all the dues 

payable by the contractor to the purchaser have been duly paid otherwise made good by the 

contractor and tracings of all completion drawings as furnished, the security deposit shall be 

refunded to the contractor on production and surrender of the related granted by the purchaser, 

and on production of no claim certificate given by the contractor duly counter signed by the 

purchaser’s Engineer and where the security deposit is in the form of Bank Guarantee, it will be 

released. 

(b) The Security Deposit shall, however, be liable to be forfeited in case of any breach by the 

contractor of any of the conditions of the contract or for not completion of the full contract 

without prejudice to other rights and remedies of the purchaser whether specifically provided for 

therein or otherwise. 

1.2.57 PROVISIONS OF CONTRACT LABOUR REGULATION AND ABOLITION ACT 

(i) 

The contractor shall comply with the provisions of the contract labour regulation and Abolition 

Act 1970 and the contract labour regulation and Abolition Central Rules, 1971 as modified form 

time to time, wherever applicable and shall also indemnify the purchaser form and against any 

claims under the aforesaid Act and the rules. 

(ii) The contractor shall obtain a valid license under the aforesaid Act as modified form time to 

time before the commencement of the work and continue to have a valid license until the 

completion of the work. Any failure to fulfill this requirement shall attract the penal provisions 

of the contract arising out of resultant non-execution of the work. 

(iii) The contractor shall pay to labour employed by him, directly or thorough sub-contractors, the 

wages as per provisions of the aforesaid Act and the rules, wherever applicable. The contractor 

shall, notwithstanding the provisions of the contract, cause to be paid the wages to labour 

indirectly engaged on the work including any engaged by his sub-contractors in connection with 

the said work, as if the labour has been immediately employed by him. 

(iv) In respect of all labour directly or indirectly employed in the work for performance of the 

contractor’s part of the contract, the contractor shall comply with or cause to be complied with 

the provisions of the aforesaid Act and the rules wherever applicable. 

(v) In every case in which, by virtue of the provisions of the aforesaid Act of the rules, the 

purchaser is obliged to pay any amount of wages to a workman employed by rules, the 

contractor of his sub-contractor in execution of the work or to incur any expenditure in 

providing welfare and health amenities required to be provided under the aforesaid Act and the 

rules or to incur any expenditure on account of the contingent liability of the purchaser due to 

the contractor’s failure to fulfill his statutory obligations under the aforesaid Act or the Rules, 

the purchaser will recover from the Contractor the amount of wages so paid or the amount of 

expenditure so incurred and without prejudice to the rights of the purchaser under section 20 

sub-section (2) and section 21 subsection (4) of the aforesaid Act, the purchaser shall be at 

liberty to recover such amount or part thereof by deducting it from the security deposit and/ or


form any sum due by the purchaser to the contractor whether under the contract or otherwise. 

The purchase shall not be bound to contest any claim made against it under sub- section (1) of 

section 20 and sub-section (4) of section 21 of the aforesaid Act except on the written request of 

the contractor and upon his given the full security for all costs for which the purchaser might 

become liable in contesting such claim. The decision of the purchaser regarding the amount 

actually recoverable form the contractor as stated above, shall be final and binding on the 

contractor. 

1.2.58 PROVISIONS OF APPRENTICES ACT, 1961 

(a) The contractor shall be responsible to ensure compliance with the provisions of the Apprentices 

Act. 1961 and the rules and order issued there under form time to time in respect of Apprentices 

directly of through petty contractors or sub- contractor’s employed by him for the purpose of 

carrying out the contract. If the contractor directly or through petty contractor’s sub contractors 

fails to do, his failures will be a breach of the contract and the Railway may in its discretion, 

rescind the contract. The violation of the provisions of the Act. 

NOTE: The contractor’s are required to engage Apprentices when the works undertaken last of a 

period of one year or more and/ or the cost of work is Rs. One lakhs or more. 

(b) EMPLOYMENT UNDER ENGINEERING WORKS CONTRACTS 

Under this scheme it is proposed to get employment to un-employed Engineering graduates/ 

diploma holders with the Railway contractors. Fresh Engg. Graduates without any experience of 

any kind will be taken under training by the contractor on stipend specified by the competent 

authority. Engineering graduates/ diploma holders who have gained experience and have 

completed a period of 6 months will be paid rate specified form time to time by the competent 

authority. Under the above provision, the contractor is required to employ such Engineers 

Diploma holders or the rates specified above and in the ratio for such Employment as indicated 

below: - 

Contract Value No. of Engg./Diploma Duration 

Holders to be employed 

Rs. 10/- lakhs 2 Engineering Degree holders Duration of 

And above 2 Engineering Diploma holders the contract 

Under the above scheme it would be obligatory for the contractor to give a declination along with 

his tender to the effect that the Graduate Engineer/ Diploma holders having been employed by 

him under the particular work for which tender is submitted are in accordance with the rates and 

ratios specified above and none of them is related to him (contractor) failing which the tender 

may be disqualified. In case of wrong information having been given by the contractor, which 

comes to light subsequent the contract may be rescinded and action taken in accordance with 

para 1.2.14 of Tender Papers. 

Technical staff should be available at site whenever required by the Engineer-in-charge to take 

instructor. In the case the contractor fails to employ the technical staff as aforesaid he shall be 

liable to pay a reasonable amount not exceeding a sum of Rs. 2000/- (Rupees Two Thousand


only) for each month of default in case of graduate Engineer and Rs. 1000/- (Rupees One 

Thousand only) for each month of default in case of Diploma Holder (overseer). The decision of 

the Engineer-in-charge as to the period for which the contractor did not employ the required 

technical staff and as to the reasonable of the amount to be deducted on this account shall be final 

and binding on the contractor. 

1.2.59 SUSPENSION OF WORKS 

The contractor shall on the order of the Engineer suspend the progress of the work or any part 

thereof for such time or times and in such manner as the Engineer may considered necessary and 

shall during such suspension properly protect and secure the far as is necessary in the opinion of 

the Engineer. 

If such suspension is : 

(a) Provide for the contractor, or 

(b) Necessary for the proper execution of the works or by reasons of weather conditions or by some 

default on the part of the contractor, or 

(c) Necessary for the safety of the works or any part thereof the contractor shall not be entitled to the 

extra cost (if any) incurred by him during the period of suspension of the works, but in the event 

of any suspension ordered by the Engineer for reasons other than aforementioned and when each 

such period of suspension exceeds 14 days, the contractor shall be entitled to such extension of 

time for completion of the work as Engineer may consider proper having regard to the periods of 

such suspensions and to such compensation, as the engineer may consider reasonable in respect 

of salaries or wages paid by the contractor to his employees during the period of such 

suspensions. 

(d) Suspensions lasting more than three months : If the progresses of the works or any part thereof is 

suspended on the order of the engineer for more than three months at a time the contractor may 

serve a written notice of the engineer requiring permission within 15 days form the receipt 

thereof to proceed with the works or that part thereof in regard to which progress is suspended 

and if such permission is not granted within that time the contractor by a further written notice 

where t affect part only of the works as are submission on such part or the contractor by the 

Railway. 



1.2.62 RIGHT OF RAILWAY TO DETERMINE CONTRACT : 

The Railway shall be entitled to determine and terminate the contractor at any time should in 

the Railway’s opinion, the concession of works become necessary owing to paucity of funds or from 

any other cause whatever, in which case the value of approved materials at site and of work done to 

date by the contractor will be paid for in full at the Railway of such determination and the reason 

therefore shall be conclusive thereof. 

1.2.63 REPRODUCED CLAUSES FORM RAILWAY’S GENERAL CONDITIONS OF 

CONTRACT WITH LATEST AMENDMENT : 

*22(5) Meaning and intent of specification and drawings : If any ambiguity arises as 

to the meaning and intent of any portion of the specifications and drawing or as to execution 

or quality of any work or material or as to the measurements of the works the decision of the


Engineer thereon shall be final subject to approval within days of such decision being 

unmated to the contractor to the Chief Electrical Engineer. 

Eastern Railway Engineer-in-chief who shall have the power the correct any errors 

omissions or discrepancies in the specification drawings classification of the worker or 

materials and whose decision in the matter in dispute or doubt shall be final and conclusive. 

*25 Shed, Store houses and yards: The Contractor shall at his own expense provide 

himself with sheds, Store houses and yards in such situations and in such numbers as in the opinion 

of the Engineer requisite for carrying on the works and the Contractor shall keep at each of such 

sheds, store houses and sufficient quantity of materials and plant in stock as not to delay the carrying 

out of the works with due expedition and the Engineers representative shall have free access to sheds 

store houses and yards at any time for the purpose of inspecting the stock of materials and plant so 

kept in hand and any materials or plant which the Engineer may object to shall not be brought upon 

or used the works but shall be forth with removed from the sheds, store houses or yards by the 

Contractor. The Contractor shall at his own expense provide and maintain suitable motor mills, 

soaking vats, or any other equipment necessary for the execution of the works. 

*26 Provision of efficient and competent staff : The contractor shall place and keep on the 

works at all times and efficient and competent staff to give the necessary directions to his workman 

and to see that they execute their work in sound and proper manner and shall employ only such 

supervisor, workmen and labourers in or about the execution of any of the works as are careful and 

skilled in their various trades and callings. The contractor shall at once remove from the works any 

agent, permitted sub-contractor supervisor, workmen and laborers who shall be objected to by the 

engineers, he shall submit a correct return showing the names of all staffs and workmen employed by 

him. In the event of the engineer being of the opinion that the contractor is not employing on the 

works a sufficient no. of staff and workmen is necessary for the proper completion of the works 

within the time prescribed, the contractor shall forthwith on receiving intimation to this effect take on 

the additional no of staff and labours specified by the engineer within 7days of being so required and 

failure on the part of the contractor to comply with such instructions will entitle to Railway to 

rescind the contract under clause-62 of these conditions. 

*27 Workmanship and testing: 

(1) The whole of the works and/or supply of materials specifies and provided in the contract or 

that may be necessary to be done in order from and complete any pert there of shall be executed in 

the best and most substantial workman like manner with material of the best and most approved 

quality of their respective Kinds, agreeably to the particulars contained in or implied by the 

specification and as referred to in and represented by the drawing or in such other additional 

particulars, instruction and drawings may be found requisite to be given during the carrying on of the 

works and to the entire satisfaction of the engineer according to the instruction and direction with the 

contractor may from time to time received from the engineer. The materials may be subjected to test 

by means of such machine, instruments and appliances as the engineer may direct and wholly at the 

expense of the contractor. 

(2) Removal of improper work and material. 

The Engineer or the Engineer’s representatives will be entitles or order from time to item. 

(a) The removal from the site within the time specified in the order of any materials which in his 

opinion are not in accordance with the specifications of drawings. 

(b) The substitution of proper and suitable materials and


(c) The removal and proper re-execution notwithstanding any previous tests thereof or “on account” 

payments therefore of any works which in respect of materials of workmanship is not in his opinion 

in accordance within the specifications and in case default on the part of the contractor in carrying 

out such order, the Railways shall be entitles to rescind the contract, under clause-62 of this 

conditions. 

*28 Facilities for Inspection: The Contractor shall afford the Engineer and the Engineer’s 

representative every facility for entering in and upon every portion of the work at all hours for the 

purpose of inspection or otherwise and shall provide or labour materials plank, ladders pumps 

appliances and things of every kind required for the purpose and engineer and the engineer’s 

representative shall at all time have free access to every part of the works and to all places at which 

materials for the works are stored or being prepared. 

*45 (a) Measurements of work : It shall be open to the Contractor to take specific objection 

to any record measurement or classification on any ground within seven days of the date of such 

measurement. Any re-measurement take by the Engineer or the Engineer’s absence after due notice 

has been given to him in consequence objection made by the Contractor shall be final binding on the 

Contractor and no claim whatsoever shall therefore be entertained regarding the accuracy and 

classification of the measurements. 

Provisions of payments of Wages Act: 

The Contractor shall comply with the provisions of the payment of Wages. Act 1936 and the 

rules made there under in respect of all employees directly or through petty. Contractors or sub- 

Contractors employed by him in the works. If in compliance with the terms of the contract, the sub- 

Contractors shall supply any labour to be used wholly or partly under the direct order and control of 

the Engineer whether in connection with works to be executed hereunder or otherwise for the 

purpose of the Engineer and labour shall be nevertheless be to comprise persons by the Contractor 

and any money which may be ordered to be paid by the Engineer shall be deemed to be moneys 

payable by the Engineer or behalf of the Contractor and the Engineer may on failure of the contractor 

to repay such moneys to the railways deduct the same from any moneys due to the contractor in 

terms of the contract. The Railways shall be entitled to deduct from any money due to the Contractor 

either under this contract or any other contract) all moneys paid or payable by the Railway by way of 

compensation of aforesaid or for costs of expenses in connection with any claim thereto and the 

decision of the Engineers upon question arising out of the effect of force of this clause shall be final 

and binding upon the Contractor. 

*55(a) Provision of Contract Labour (Regulation and Abolition) Act19: 

In every case in which by virtue of the provisions of the aforesaid Act or the Rules, the 

Railway is obliged to pay any account of wages to a workman employed by the Contractor or his 

sub-Contractor in execution of the work or to incur any expenditure in providing welfare and health 

amenities required to be provided under the aforesaid. Act and Rules or to incur any expenditure on 

account of the contingent liability of Railway due to the contractor’s failure to fulfill his obligations 

under the aforesaid Act or the Rules the Railway will recover from the Contractor, the amount of 

wages so paid or the amount of expenditure so incurred, and without prejudice to the rights of the 

Railway under section 20 and sub-section (2) and section 21 sub-section (4) of the aforesaid Act. The 

Railway shall be at liberty to recover such amount or part there of any deduction from the security 

deposit and or from any sum due by the Railway to the Contractor whether under the contract or 

otherwise. The Railway shall not be bound to contest any claim made against it under sub-section (1) 

of section 20 and sub-section (4) of section 21 of the aforesaid Act accept on the written request of


the Contractor and upon his giving to the Railway full security for all costs for which the Railway 

might become liable in contesting such claim. The decision of the Railway regarding the amount 

actually recoverable from the contractor ad stated above, shall be final and binding on the 

Contractor. 

*61(2) Payment on determination of contract: Should the contract determined under subclause 

(1) of this clause and the Contractor claims payment for expenditure incurred by him in the 

expectation of completing the whole of the works. The Railway shall admit and consider such claims 

as are deemed reasonable and are supported by vouchers to the satisfaction of the Engineer. The 

Contractor shall have no claim to any profit or advantage, which is might have derived from the 

execution of the work in full but which he did not derive in consequence of determination of the 

contract. The Railway’s decision on the necessity propriety of such expenditure shall be final and 

conclusive. 

*62 Reproduced under clause 1.2.29: Reproduced Clauses from Central Railway’s General 

conditions of contract 1956 with latest Amendment. 

*18 Illegal Gratification: Any bribe, commission gifts or advantage given promised or 

offered by or on behalf of the contractor or his partner agent or servant of any one of his or on their 

behalf of any officer or employee of the Railway of to any person on his of behalf on relations to the 

obtaining or the execution of this or any other contract with the Railway shall in addition to any 

criminal liability which he may incur subject to contractor to the rescission of the contract and all 

other contract with the Railway and to the payment of any loss or damage resulting from such 

decision and the Railway shall be entitled to deduct the amount so payable from any moneys due to 

the Contractor under the contract or any other contracts with the Railway. The Contractor shall not 

lend or borrow from or have or inter in to any monetary dealing or transactions either directly of 

indirectly with any employees of the Railway and if he shall do so the Railway shall be entitled 

forthwith to rescind the contract in all other contracts with the Railway. Any question or dispute as 

the commission of any offence or compensation payable to the Railway under this clause shall be 

settled by the chief Engineer of Engineer in Chief of Railway in such manner as be shall considered 

fit and sufficient and his decision shall be final and conclusive. 

Footnote: Please read Chief Engineer/ Engineer-in Chief as Chief Electrical Engineer/ in the clauses 

of G.C.C.


PART-I 

CHAPTER-III 

PRICES AND PAYMENTS 

PARA NO. 

SUBJECT 

1.3.1 Scope 

1.3.2 Schedule of prices 

1.3.3 Prices of equipment’s. Components and materials 

1.3.4 Prices of spares. Spare components and fittings and additional supplies. 

1.3.5 Payment and Recoveries. 

1.3.6 Invoicing procedure. 

1.3.7 Payments for designs. 

1.3.8 Payments for foundations. 

1.3.9 On Account Payments 

1.3.10 Recoveries from the Contractor 

1.3.11 Progress Payments for supply and erection 

1.3.12 Payments for spares and additional supplies. 

1.3.13 Excise Duty and Sales Tax 

1.3.14 Payments on Provisional acceptance of each sub-group 

1.3.15 Payment for surplus materials 

1.3.16 Final settlement 

1.3.17 Measurements 

1.3.18 Mobilization advance 

1.3.19 Variation.


1.3.1 Scope 

This chapter deals with prices to be paid for supply and/or erection of various items of work or 

for supplies and other amounts payable in accordance with accepted schedules or prices and 

rates and terms conditions of payment mentioned herein. This is a works contract. The total prices 

for the completed items of work are the actual prices payable to the contractor as per the terms 

and conditions of the contract. The unit of price is rupees. 

1.3.2 (a) Schedule of Prices 

The unit prices of various items of work shall be included in schedule-1. All unit prices shall 

be FIRM irrespective of minor variations in basic quantities and use or alternative types of various 

components and fittings approved by the Purchaser. Minor changes in basic designs shall not affect 

unit prices, so long as such changes are mutually agreed to by the purchaser and the Contractor. All 

unit prices shall be in RUPEES. 

(b)Unit prices 

For materials: 

The unit prices indicated in schedule, shall include the prices of materials including all 

incidental charges for transport, loading/unloading and handling of materials, commission for 

arranging dispatch by rail direct from manufacturer’s Factory and completing all necessary 

formalities in this respect, such as submission of forwarding notes, arranging placement of wagon, 

collection of Railway receipts all insurance premium banker’s charges for bank guarantee, indemnity 

bond, inclusive of cost of stamp etc. as also siding or shunting charges, if any levied by the Railway. 

The prices shall include Excise Duties and Sales Tax as also works contract tax, if any, 

payable on supplies. Hence the question of reimbursement from Railway on all statutory deduction 

does not arise. The prices shall also include provision for losses and wastage in transit and erection. 

No separate prices for supply of concreting materials shall be included against item-2 in Schedule-1. 

These shall be included in the unit prices for erection for this item. 

For Erection: 

The unit price indicated in Schedule-1 shall include cost of erection and testing to be done by 

the Contractor to the extent indicated in Part-II, Chapter-VII and also cover all cost of administration 

of the contract insurance premium banker’s charges for guarantee, cost of stamps, cost of storage, 

loading/unloading and handling of materials and for a road transport which the Contractor may use 

for carriage of materials between his depot and depot/s and site of work. The unit prices shall include 

cost of works and adjustments necessary to be done by the Contractor during of after the tests carried 

out by the Purchaser as per Part-II, Chapter-VII. 

(c) Other Prices Adjustment: 

No adjustment on account of variation in insurance and freight charges (Road or Rail) will be 

permitted No adjustment of unit price or prices of fitting, materials equipment or components on 

account of price fluctuation of raw materials will be permitted. 

(d) Quantities: 

The approximate estimated quantities of various items of work are included in schedule.


(e) If it is considered that the work included in Schedule-1 would not cover all works involved 

in putting the installation into commission additional items of work, which are considered 

necessary, and unit prices of such items shall be included in Schedule-I. Explanatory notes 

for such additional items shall be given under deviations from Tender Papers (See Part-V). 

(f) Explanatory Notes: 

Explanatory Notes for various items of works included Schedule-I are gives in Chap. IV, 

Part-I. 

(g) New items or Work: 

If during the execution of the work the Contractor is called upon to carry out any new item of 

work not included Schedule-I, the Contractor shall execute such work at such prices as may 

be mutually agreed with. Purchaser before commencement. 

1.3.3. PRICE OF EQUIPMENT. COMPONENTS & MATERIALS 

The prices of individuals equipment, components and materials required for the work 

inclusive of Excise Duty, Sales Tax and Insurance Premium under the Emergency Risks (Goods 

Insurance Act in force (para 1.2.40 C) if, any shall be related to the actual prices of the components 

and materials to the Contractor as obtained by him at the time of submitting his tender. If required by 

the Purchaser, the Tenderer/ Contractor shall substantiate such prices, if it considered that the 

components and materials in addition as alternative to those included in Schedule-I, are required for 

the work, such items shall be included separately No. adjustment of rates is permissible if alternative 

approved fittings are used for any rates whatsoever. 

1.3.4. DELETED 

1.3.5. PAYMENTS AND RECOVERIES: 

Subject to any deduction or recoveries, which the Purchaser may be entitled to make under 

the contract. The Contractor shall unless otherwise agreed to be entitled to the following payments 

subject to conditions stipulated subsequent paragraphs. 

(i) payment for designs, (1.3.7.) 

(ii) Payments for foundations, (1.3.8.) 

(iii) On account payments, (1.3.9.) 

(iv) Progress payments for erection (1.3.11.) 

(v) Payment for provisional acceptance for each sub-group. 

(vi) Payment for surplus material taken over. 

(vii) Final settlement. 

1.3.6. INVOICE PROCEDURE 

(a) The Contractor shall submit his invoicing procedure for approval by the purchaser within 1 

month from the date of receipt of Letter of Acceptance of Tender Separate invoices shall be 

submitted for different types of payments mentioned move all invoices shall be submitted with 

original supporting documents are requited at support of saver invoice, true certifies copies of the 

original documents may be forwarded to the Purchaser’s Engineers with his consent. 

(b) Invoices shall be submitted only on the basis of agreed principles and prices. Quantities and 

measurements of works completed shall be approved by the Purchaser’s Engineer prior to the 

submission of invoices. For this purpose, the Schedule of quantities and measurements submitted by 

the Contractor for approval of the Purchaser’s Engineer may be only up to the extent of work 

completed except in case of payment on provisional acceptance under Para 1.3.14.


1.3.7. PAYMENTS FOR DESIGNS 

Payments for designs shall be made on the basis of prices included in item-1. Schedule I. The 

amount payable shall be based on assessed quantities against item 1 of Schedule I (Assessment-1) 

(See Para 2.5.9.) 

Payment for design and drawing will be made in two installments, first 50% will be paid on 

submission of designs and drawings and approval and balance 50% on approval of as erected 

drawings and submission of all RTF and Ferro copies. 

1.3.8. PAYMENT FOR FOUNDATIONS 

Payment for foundation 90% payment will be made on completion of casting of foundation 

duly certified by representative of Railway and recorded in the M.B. The balance 10% payment 

against foundation will be released on completion of entire foundation work and on issue of 

provisional acceptance certificate duly certified by competent officer of Electrical Department of 

E.C.Rly. Constructions. 

NOTE: Such payments will be made only on approval and certification by the Purchaser’s 

representative. 

1.3.9. ON ACCOUNT PAYMENTS 

(a) General: 

On account payment will be made for equipment Components, fittings and materials as 

described below. No on account payment will be made on supply of concreting materials. 

(b) Equipments, Components & Fittings: 

On account payment for equipment, components fittings and materials required for the 

execution of work will be made to the extent of 90% of the unit prices of such equipment, 

Components, fittings and materials as per Schedule-1. On handling over of the material to Purchaser 

at his Depot against received challan and inspection certificate issued by Railway representative and 

production of following documents. 

(i) Railway printed bill form in duplicate for the Consignment showing the quantity against the 

items and description of each consignment. 

(ii) Manufacturer’s certificate for large value items wherever necessary as decided by Railway 

Engineer duly counter signed, along with inspection certificate issued by authorized 

representative of C.E.E/E.C. Rly. 

(iii)Certificate of current statutory taxes and dues. 

(iv) Detailed entries made in the M.B. 

(v) The Contractor’s supply items will be reissued to contractor at purchaser’s depot for erection 

purpose on submission of Indemnity Bond. The indemnity bond shall be in prescribed form valid 

for one year beyond the date of completion of work. In event of extension to the time of 

completion the contractor shall extend the validity equivalent cash would be held by the 

purchaser from the payments due to the Contract to achieve the require progress of work. In case, 

if contractor is not in a position to furnish additional BG or cash withheld will be 

returned/refunded soon after it is not required i.e. additional material issued to improve the 

progress work is erected. After completion of work surplus material if any kind and not required 

by the purchaser will be returned to contractor. Indemnity bond will be returned if no material if 

outstanding after material. 

(g) “ On account payments” will commence only when Schedule I (Assessments-I) is approved by 

the Purchaser.


(h) Balance 10% of the rate quoted against the supply items of the Schedule will be released on issue 

of completion certificate by competent authority. 

1.3.10. RECOVERIES FROM THE CONTRACTOR 

(a) All the recoveries for material supplied and services rendered by the Purchaser to the 

Contractor and other refund due from the Contractor shall unless otherwise specified, ordinarily be 

made by deductions from payments due to the Contractor covering the value of supply and erection 

in the progress payment for erection. (See Para 1.3.11.) and from payment on provisional Acceptance 

(See Para 1.3.14.) 

(b) The cost of materials supplied by the Purchaser under the second sub-para of 1.2.20. will be 

recovered in full by the Purchaser at the relevant price on Schedule’ or book rate or last purchase rate 

which ever is higher, to the extent of requirement of such materials for each sub-group from the 

payments to made under Para 1.3.11. and 1.3.14.. The cost of materials supplied by the Purchaser 

under the aforesaid sub-para 1.2.2. (b) will be recovered in full by the Purchaser at the appropriate 

prices quoted in Schedule-I or book rate of last purchase rate whichever is higher to the extent or 

requirement of such material for each sub-group from the payments to be made under para 1.3.14. 

(c) The cost of materials if supplied under para 1.2.21. will be recovered in the manner indicated 

in the sub-para (a) above 

(d) The material supplied under para 1.2.20. (b), 1.2.21 shall be covered by the valid standing 

Indemnity Bond. 

1.3.11. PROGRESS PAYMENT FOR ERECTION 

(a) General 

In case the Contractor if unable to complete any item of work in particular subsection for 

reason accepted as adequate by the purchaser, progress payments will be made to the extend of work 

completed in the subsection Supplementary progress payments will be made on respect of the left 

over works when the work is completed. 

Adjustment of on account payment: 

On completion of each items of work in Schedule I on each agreed sub-section the contractor shall 

be payments to the extent of the prices for supply and or erection included in Schedule I. 

The progress payments towards erection will be made as follows: 

(i) Foundations (as per Para 1.3.8.) 

(ii) Masts and Portals: 

On completion of erection of masts and portals of each location the contractor shall receive payment 

to the extent of 90% of the prices for erection of masts and portals 

(iii) Other items of supply and/or erection : on completion of erection of other items included in 

schedule-I, on each agreed subsection the contractor shall receive payments to the extent of 90% of 

the erection prices included in schedule-I . All the above payments shall be subject to any 

recoveries, which may be due under Para- 1.3.10. 

(iv) Progress payment for the erection of traction masts and portals/structures will be made only 

when traction masts of structures are erected in the foundation blocks and muffing is completed. 

Progress payment for erected bracket assemblies will be made even thought the register arm dropper 

and steady arm not erected and final revision and adjustment are not done. 

1.3.12. PAYMENT FOR ADDITIONAL SUPPLIES- DELETED 

1.3.13. EXCISE DUTY SALES TAX


Excise duty, Sales Tax, Octroi and any other local levies taxes on works contracts on supplies 

will be included in the rates quoted by the Contractor in the relevant Schedule. The Purchaser is to be 

made from the Registered dealers only for that particular class of goods. 

1.3.14. PAYMENT OF PROVISIONAL ACCEPTANCE 

On completion of entire work and on issue of provisional acceptance certificate balance 10% 

of the price will be paid. 

1.3.15 . PAYMENT FOR SURPLUS MATERIALS : DELETED 

1.3.16. FINAL SETTLEMENT 

On Expire of Guarantee period and issue of the certificate of final acceptance of the entire 

installation (See Para 1.2.50.) the security deposit will be refunded or Bank Guarantee released to the 

Contractor after adjustment of any dues payable by the Contractor. 

1.3.17. MEASUREMENTS 

(a) Payment for field work shall be made in accordance with approved designs and drawings 

and measured in relevant units except where provided for or otherwise. In case the dimensions of the 

work are more than those shown in approved design and drawings. The Contractor will not be 

entitled to any extra amount unless dimensions were increased on account of Physical impossibility 

in carrying out the work in accordance with approved drawing and the work is accepted without 

being rejected payment will be made as per work actually done. 

(b) The measurement shall be made Generally in accordance with standard engineering practice 

and in conformity with the Explanatory note for schedule-I (part-I, Chapter-IV). 

1.3.18. MOBILISATION ADVANCE- No mobilization advance will be given. 

1.3.19. VARIATION: Variation will be applicable in this tender as per Rly. Board’s letter no. 

94/CE-1/CT/4, dt.17.10.2002. 

The conditions of variation are mentioned below. 

a) The payment shall be made at the accepted rates for the quantity executed till the total value 

of the executed work is up to 25% above the agree mental. 

b) In case the railway decides to get done the additional value of the work beyond 25% above 

the agreement value under this contract, the following rates will be applicable. 

(i) The rates will be reduced by 2% for the overall value of the executed works beyond 

25% above the agreement value when the total value of the executed work is up to 

40% above the agreement value. 

(ii) The rates will be further reduced by 2% (i,e, total 4%) for the over value of the 

executed work beyond 40% above the agreement value when the total value of the 

executed work is up to 50% above the agreement value. 

(iii) Fresh negotiation rates shall be applicable for the value of the executed work beyond 

50% above the agreement value. 

However, Railway reserves the rights to execute value of work above the agreement value in best 

and most economical manner as may consider fit by other agency. 

c) No claim whatsoever will be entertained in this matter and decision of Railway as per above 

conditions will be binding on the contractor.


PART-1 

CHAPTER-IV 

EXPLANATORY NOTES OF SCHEDULE-1 

1.4.3 GENERAL 

i) All materials supplied shall strictly be as per specification mentioned for respective item of 

governing RDSO/CORE specification for the item. 

ii) All OHE and switching station item shall be purchased from approved supplier of 

CORE/RDSO for respective item. List of approved source of supply shall be given to successful 

Tenderer. 

iii) Quantities mentioned in scope of work are based on approximate assessment of site. However 

actual quantities may very depending upon site conditions. The contractor will first submit detailed 

design and drawings after survey (LOP), and only after approval of LOP the supply of material 

should be commenced. 

iv) Except for the materials mentioned in annexure-4, Railway will not supply any other 

materials and contractor has to arrange his own tools and tackles for carrying out the work. 

v) All the materials as specified in annexure-4 shall be issued by Sr. Sec. Engineer/CON. 

Contractor has to make his won arrangement for transporting the same from store to work site, if 

required. The contractor has to make his own arrangement for loading of contact and catenary wire 

drums on reel wagons at nearest Railway siding. 

vi) Permit to work for carrying out work under power Block shall be granted by Sr. S.E./CON. 

Program for power block with details shell be submitted one week in advance Railways will not 

assure guarantee of availability of power block on pre appointed day and time. 

vii) As the work is to be carried out in electrified running lines, contractors has to take all safety 

precautions for his staff and Railways shall not be responsible for any accidents or injuries to 

contractor’s labour during execution of work. 

viii) Contractors shall take due care and caution to avoid any damage to rail property during 

execution of work. Any damage/loss to Railway property due to negligent working of contractor 

shall be realized from the payments dye to him. 

ix) Safety of materials against theft after erection till the final charging shall be contractor’s 

responsibility. This will include materials issued by Railways for erection. 

x) Railway reserves the right to undertake, any of the items covered under this schedule, 

departmentally in case of urgency/accident etc. Contractor shall not have any claim on such works. 

xi) In case of any discrepancies in this chapter and other parts of tender documents the provision 

of this chapter will prevail. 

xii) Detailed technical specification for supply, erection, inspection & testing are included in Part- 

II. In case of any conflicts in provision of this chapter and Part-II. The provision in this chapter will 

prevail. 

Note :- Any clarification of these explanatory notes of schedule items will intimated to office of The 

Dy. Chief Electrical Engineer/ Construction/E.C.R./ Danapur. 

1.4.10. PROGRAMME FOR EXECUTION 

i) After issue of LOA the contractor shall submit detailed programme for execution within 21 

days for approval of Railway. 

ii) After carrying out the survey the contractor shall submit detailed programme for execution. 

The contractor shall locate proper site to set up his depot for supply of materials, subject to approval 

of the purchaser engineer.


1.4.11. INSPECTION 

a) All items will be procured from CORE/RDSO approved manufacturers and contractor shall 

produce documentary evidence for the same. All supply items may by inspected/tested by authorized 

representative of Dy. CEE/ECR/MHX at manufacturer’s premises or at site if required by Rlys. The 

contractor shall intimate in advance for readiness of material for inspection. 

b) All works shall be carried out as per specification and contractor shall offer for stage wise 

inspection of items carried out. Any work rejected by inspecting official shall be rectified/replaced as 

per instruction and decision of site in-charge shall be final in this regard. 

c) Final check of OHE will be done by Tower Wagon during load shifting, which will be 

provided by Railways however contractor has to arrange all other measuring and inspection tools and 

tackles. 

d) Detailed procedures for inspection have been included in Part-II, Chapter VII. 

1.4.6. EXPLANATORY NOTES ON SCHEDULE OF PRICES: (Detailed scope of work) 

Explanatory notes for various items of work in Schedule-1, given below: 

The basic quantities of components and materials required to make up a unit of work for 

selected items, are indicated for guidance only. There may be minor variation to suit erection but no 

adjustment in prices for various items of work, provision for loss and wastage in transit and erection 

should be provided for, over and above the basic quantities of components and materials required to 

make up a unit of work indicated herein, except where otherwise specified for materials supplied by 

the Purchaser. 

In the explanatory notes given in this Chapter, the term small parts steel work is meant to 

cover fabricated steel work made from rolled steel section, complete with bolts and nuts and washers 

where required for fastening the small parts steel work to any structural member. The term 

“attachment” wherever used is intended to cover castings, forgings, machined or welded components 

or fittings, which are attached directly to a structural member, or mounted on small parts steel work 

and shall include bolts and nuts for fastening the attachment to the structural member of small parts 

steel work. 

In the explanatory notes given in this chapter, the term “ bimetallic connection: is meant to 

cover any connection between a copper conductor and an Aluminum conductor. The clamps used for 

such connections shall be made of a suitable Aluminum alloy or copper alloy and the 

Copper/Aluminum conductor shall be wrapped with a bimetallic (Aluminum copper) strip to prevent 

direct contact between aluminum and copper. 

Special notes for measurements are included in this Chapter under various items where 

necessary. 

NOTES FOR MEASURMENT : For the purpose of payment against this item, the length of track 

shall be measured as under. 

1. General : By the difference in chainage of the length under consideration, as incorporated in 

the lay out plans. 

2. Turnouts : The track taking off shall be deemed as starting from the toe of the switch of the 

turn out. 

3. Crossovers : The length of track shall be taken as the difference in the chainage of the toes of 

switches of the two turnouts constituting the cross over. 

4. Diamond crossing with or without slips. The two tracks crossing each other shall be 

measured independently as per not 1 above as though there were no crossing No extra shall be 

provided for slip points.


5. Dead ends and tops of loops : The lengths for payment under this item shall be up to the 

chainage of anchor mast of the terminating OHE. 

6. Over and above, this will include the price for design and drawings for switching stations. 

Explanatory note for schedule 

Item No. 1: - Preparation of design and drawing for overhead equipment including switching 

station. 

The price shall cover submission of design and drawing of overhead equipments suitable for 

regulated/ tramway type indicating location of structures, chainage, type of foundation, type of mast, 

stagger, versine, implantation and all location covering engineering object like bridge, culvert, shed, 

cabin station. Building hut, shelter shed etc and signal pole through the section. The price shall also 

include the following- 

(i) Making minor modification with the approval of the purchaser of the layout of structures and 

overhead equipment layout plans, including stagger, location of cut in insulators etc. 

(ii) Preparation of cross section drawing and structure erection drawings for each structure 

locations. 

(iii) Choice of type and size of foundations to suit soil and loading conditions, except for the ones 

which are considered as ‘Works under other agencies’. 

(iv) Preparation of long section drawings of overhead equipment where such drawings are 

required including detailed study of over line structures such as foot over bridges, road over bridges 

etc, for maintaining the specified height of contact wire and requisite clearance. 

(v) Preparation of other designs and drawings including drawings of small parts steel work (other 

than those which R.D.S.O. st 2.1.49 standard drawings are available) and detailed designs for L.T. 

supply transformer stations. 

(vi) Supply of copies of all drawings, including completion drawings-8 copies Ammonia print 

with two copies of RTF print and finally. “As erected drawings” are supplied to the purchaser with 8 

copies Ammonia print and two copies RTF print All other requirements specified in part-II-Ch. V 

should be complied. 

In case of preparation of the overhead equipment pegging plans by the purchase for any part 

of the section is delayed, the contractor may be asked to prepare pegging plans for the sections. No 

extra payment will be made for the preparation of such pegging plans. The total length of track for 

which the contractor may be asked to prepare such pegging plans, will not exceed 2% of final total 

quantity against this item. 

This price shall also cover soil investigation and testing in an approved manner 

Item No.2: - Supply and Erection of traction masts. 

The price shall cover cost of supply, erection, alignment and seating before grouting of 

individual traction masts and masts for LT supply transformer stations whether rolled or fabricated 

including those for head spans. 

Note: For the purpose of payment, the weights of individual traction masts and masts of head span 

shall be determined for each type on the basis of the payable weights per meter length shown below 

for standard types. For special types, the payable weights per meter length will be indicated by the 

purchaser at the time of approval of designs.


PAYABLE UNIT WEIGHTS FOR STANDARD MASTS 

SL. NO. TYPE OF MASTS Weight in kg. Per meter 

including of galvanization 

1 6”x 6”x 25.15 BFB 38.03 

2 162x154x27.1 kg. BFB 38.00 

3. 200x200x19.9 kg. BFB 51.20 

4. 8”x 6 x 35 1b RSJ 53.39 

5. S-1 53.39 

6. S-3 74.74 

7. S-4 53.39 

8. S-5 111.5 

9. S-6 52.1 

10. S-7 74.71 

11. S-8 108.84 

12. K-100 24.25 

13. K-125 30.60 

14. K-150 38.31 

15. K-175 44.38 

16. K-200 49.30 

17. K-225 56.21 

18. K-250 66.37 

19. B-100 27.03 

20. B-125 31.68 

21. B-150 38.91 

22. B-175 44.51 

23. B-200 50.76 

24. B-225 67.50 

25. B-250 76.60 

26. Dwarf Mast 199.43(Full length) 

Item No. 3: Supply & erection of fabricated steel work other than masts. 

The price shall cover cost of supply & erection, alignment and setting before grouting, 

wherever required of drop arms, chairs, standard super mast and suspension arrangement for feeders 

and return conductor, multiple cantilever cross arms, chairs for bracket assemblies suitable for 

regulated conventional type OHE and all other small parts steel works, the erection of which if 

carried out by the Contractor irrespective of whether they are supplied by the purchaser or the 

contractor. 

The price of galvanized bolts and nuts, fasteners wherever required as per approved design 

and drawing shall be calculated @ 15% of total SPS.


For standard fabricated steel work for which R.D.S.O.’s approved drawings are available, the 

weight of steel work as specified in R.D.S.O.’s drawings shall be considered for payment. However 

in case the unit sectional weight of any member indicated in R.D.S.O.’s drawing in not in 

conformity with the unit sectional weight as per the latest specification, the weight of the fabricated 

steel work, shall be calculated on the basis of latest I.S. specification and the same will be considered 

for payment. For the nonstandard fabricated steel work, the calculated weight to be considered for 

payment under this item shall be included in the relevant drawing based on latest is sectional weight 

at the time of submitting the designs for approval of the purchaser. 

Item No. 4: Supply and erection of cantilever assembly suitable for / Conventional type OHE 

(regulated). 

The price shall cover supply, fabrication and erection of any bracket assembly suitability for 

regulated conventional type OHE on a traction mast or support on drop arm and shall include those 

on high level platforms/sheds, in the vicinity of turnouts, over bridges or overlaps and at locations 

with reduced encumbrance or terminating wires. The price shall cover on a flat rate basis. The price 

shall include the cost of supply of all components including galvanized steel tubes and top and 

bottom attachments but excluding insulators. 

The price shall include: - 

Rly I.D. No. Description of components Qty. per 

3020 Mast fitting for hook insulator Set 1 

2400 Tubular stay arm assembly (including galvanized Steel Set 1 

tube). 

2403-1/2402 Tubular stay sleeve with adjuster Set 1 

2380 Hook bracket Set 1 

2140 Large catenary direct clamp Set 1 

2160-1 Large register arm hook Set 1 

2080 Large bracket tube assembly (o.49 mm) (including Set 1 

galvanized steel tube). 

3070-1/2 Mast bracket fitting assembly Set 1 

2540-1 BFB steady arm assembly Set 1 

2550-3 Standard anti-wind clamp Set 1 

1220 Contact wire swivel clip Set 1 

Item No. 5& 6 Supply and erection of Stay and Bracket Insulators. 

The price is applicable to the provision of a stay and Bracket insulator assembly for 

suspension of single and double cantilever. The price shall cover supply of Insulators, but excluding 

small parts steel work, with bolts, nuts etc, if any 

Item No. 7: Supply & erection of 25 KV post insulator. 

The price is applicable to the provision of a 25KV post insulator to support copper or 

aluminum jumper/bus bars. The price shall cover supply of all components and fittings/angle


iron(outrigger) to support the jumpers and supply of post insulators. The price shall cover supply and 

erection of all components required for the assembly, including post insulator. 

Item No. 8: Foundation And Plinth 

The price shall cover excavation, supply and handling of all material and accessories. 

Casting concrete including frame work where necessary, tamping of concrete, grouting of masts and 

finishing the top of concrete foundation of anchor blocks. The price also includes dismantling of all 

connected temporary arrangements, back filling with earth and compacting the same to the required 

height and width as per drawing to ensure safety of foundation, confirming the expose height of 

foundation block to within 10 cm, and removal of soil. The price also includes the cost of cements. 

All other requirement of part-II, chapter-II should be complied by the contractor. 

1. The prices under item 15 shall be same for any shape or size of concrete blocks. In 

calculating the individual volume of concrete, fraction of a cubic meter beyond the third decimal 

shall be rounded off to the next nearest third decimal. 

2. The price under item 14 shall apply for concerning of all foundation for masts, gantries: 

portals anchor blocks for guy rod. 

3. For purpose of computation of volume of concrete under item 14. The volume of steel work 

embedded in the foundation block and muff shall be ignored. 

4. Cost of concrete will be paid for only under item 14. 

5. For purpose of computation of volume of concrete under item 14, the volume of 

Concrete shall include the volume of sand and bitumen in sand cored foundation. However, for the 

purpose of computation of quantity of cement utilized in sand erected foundations, the volume of the 

sand and bitumen used in core hole should be deducted from the total volume of the foundation. 

6. For purpose of computation of volume of concrete the volume of each muff for all masts shall 

be taken as 0.02 cum except for masts with balance weight and for each column of portal, each head 

span mast & 2 or 3 track cantilever masts, and special fabricated masts for which the volume of muff 

shall be taken as 0.08 Cu.m irrespective of the size and shape of muff on a flat basis. 

7. The prices under item 14 shall also include the cost of concrete cable trenches and trench 

covers at the switching station as well as embankment of drain pipes, where required. 

8. The prices under item 14 shall also cover the cost of diversion of masonry/earth drain 

wherever necessary for casting of foundations and will also cover cost of removal or infringement 

using chisel and hammer. 

9. The depth of excavation shall be measured from the formation level to the maximum 

excavated point. The prices shall also include restoring of platform surface for formation of platform 

Item No.9: Supply & Erection of Copper jumper: 

The Price shall cover, on a flat rate basis, the supply of all components and fittings required 

for providing a flexible copper jumper connection including parallel clamps, bimetallic and 

Aluminum copper ALCU strips, wherever required, and terminal or tee clamps at either end, and 

jumper wire. The price shall also cover the supply and erection of the copper jumper assembly 

including jumper wire.


Item No. 10: Supply & Erection of a structure bond: 

The price shall cover supply of all materials Including mild steel flat (40x6mm) required to 

provide a structure bond connecting a traction mast or structure to the nearest non track circuited rail 

or earth electrode, including all fastenings at both ends. The price shall include shaping and drilling 

of the bond and rail and erection of all materials including the bond. The price shall also include 

provision of head shrinkable PVC tube for structure bond under track-circuited rail. This would also 

cover connection to earthling terminals of equipments lime. L.T. transformers with structures and 

then rails as per approved drawing. 

Item No.11: Supply and erection of a Inter Track bond: 

The price shall cover supply of all material Including mild steel flat (40 x 6mm) required to 

provide a structure bond connecting a traction mast of structure to the nearest non track circuited rail 

or earth electrode, including all fastenings at both ends. The price shall include shaping and drilling 

of the bond and rail and erection of all materials including the bond. The price shall also include 

provision of head shrinkable PVC tube for structure bond under track-circuited rail. This would also 

cover connection to earthling terminals of equipments lime L.T. transformers with structures and 

then rails as per approved drawing. 

Item No.12: Supply & Erection 9 tonne insulators: 

The price is applicable to the provision of a 9 tonne insulator assembly for suspension of an 

all aluminum 25 KV feeder (single of double spider), 130 sq.mm or 65 sq.mm overhead equipment 

conductor or 19/2.79 mm all aluminum catenary or any other similar type of suspension, cut in 

insulators in insulated overlaps, insulators at anti creep and other termination arrangements. The 

price shall cover supply of all components required including the appropriate suspension/ termination 

plan and the 9 tonne insulator assembly but excluding small parts steel works with bolts, nuts etc, if 

any. The price shall include the cost of provision of a flat arm or tape only to be used in connection 

with suspension of SPIDER conductor. 

Item No. 13: Supply and erection of number plate. 

The various types of all other boards under these items is to be supplied & erected as per 

RDSO’s specification and as per instruction of purchaser’s engineer. The price shall also cover for 

supply and erection of all accessories for all type of boards 

Item No. 14 : Supply and erection of 25 KV Caution board. 

The price shall cover supply, painting lettering and fixing Caution board made as RDSO 

drawing and approved manufacturer. The price shall also cover for supply and erection of all 

accessories for all type of boards covered . 

Item No. 15 : Dismantling charges for OHE shifting/slewing & cutting/removal of old mast 

including loading & un loading & transportation of all released material from site to DOS 

depot. 

The price shall cover dismantling or existing OHE including SPS and termination assembly 

on the mast after taking proper precaution and the instruction of purchaser’s engineer. The 

dismantling overhead equipment in complete with all respect shall be handed over to the purchaser’s 

executive depot. This work will have to be carried out as per instruction of the purchaser’s engineer.


The contractor should have experienced men and tools and tackles for tackle this type of job. This 

work will have to be carried out under power block. 

The price shall cover for temporary slewing or lowering of erected OHE adjusted and / or 

unadjusted to ground for special works, at the instruction of the Purchaser and restoration and readjustment 

of the equipment after completion of special works. The price shall be per span or part 

thereof. Including anchoring spans. Additional components or materials used during such restoration 

or re-adjustment will be paid for item no.12. The work will have to be carried out under power block. 

The price shall cover the cutting of traction masts. Care should be taken that during cut of 

mast should not damage any Railway property. The cut mast shall be handed over to the purchaser’s 

depot. For cutting the mast necessary arrangement and precautions have to be taken by the 

conductors before hand. The work will have to be carried out as per the instruction of the purchaser. 

During. 

Item No. 16 :- Supply and erection of 25 KV /230 V ,10 KVA LT Supply Transformer 

The price shall cover supply and erection of 10 KVA LT supply transformer complete with 

terminal connectors on a mast. The price shall also cover oil filtration and pre- commissioning test as 

approved by the railway. The contractor shall make his own arrangement for oil filtration equipment 

as well as power supply required for the same. All necessary tools, equipment’s, instruments 

required for carrying out oil filtration/checks/tests and commissioning shall be arranged by the 

contractor. The price shall not include erection of small parts steel work and 25 KV DO Fuse. 

Item No. 17: - Supply and erection of 25 KV drop out fuse. 

The price shall cover supply and erection of 25 KV Dropout fuse switch complete with all 

mounting accessories and terminal connectors as required. The price shall not include erection of 

small part steel work and insulators. 

Item No. 18 :-Supply and erection of Anti climbing device. . 

The price shall cover supply and erection of anti climbing device should be painted with 

two coat of red oxide finished with two coats of Aluminum paint. 

Item No. 19 :- Supply and erection of insulated single core unarmoured 240 sq.mm XLPE 

cable 

. The price shall cover supply of insulated single core unarmored 240 sq.mm. 

XPLE for each location and required proper components for erection of the same for each location. 

The price shall also cover erection and adjustment of special components wherever required.The 

price shall also cover the cutting of existing Feeder wire, supply and erection of splices on both 

ends of feeder wire. 

tem No. 20 :- Erection and laying of 50 Sq.mm Aluminium cable in ground. 

The price shall cover supply, installation in trenches and connecting up of L.T. Power 

supply cable between the L.T. supply transformer at switching station and L.T. distribution board, 

provided by the purchaser inside the control cubical. The price shall cover supply and erection of 

suitable cable boxes, if required, and connectors at both ends.


Item No. 21 :- Supply and erection of Insulated catenary cable in span under over line 

structure. 

The price shall cover supply of insulated catenary wire, catenary splice (1090) for 

each location and required dropper clip and erection of the same for each location. The price shall 

also cover erection and adjustment of special droppers wherever required. The insulated catenary 

wire to be supplied shall be as per RDSO’s specification No.ETI/OHE/75(04/95) with A&C slip 

Nos. 1&2. The work shall be executed in accordance with drawing No.ETI/OHE/SK/570. The price 

shall also cover the cutting of existing Catenary wire, supply and erection of all materials and 

components including adjustments of dropper wires. 

Item No. 22 :- Supply and erection of Protective screen at on ROB. 

Supply and erection of protective screen on ROB’S/FOB’s. The price shall cover on 

per track basis on both sides of ROB/FOB, the cost of all material required for fabrication of 

protective screen including angle, Tee, expanded metal (Jali), GI sheets, paints etc. The price shall 

also include the labour cost for fabrication, erection and painting at various locations. The fabrication 

and erection work shall be done as per RDSO’s Drg. No.ETI/C/0068Mod-E. 

Item No. 23 :- Supply and erection of Catenary Splice ( 65 Sq.mm ) :- 

The price shall cover supply and erection of Catenary splice (65 sq.mm.)types 

specified, including bolts, nuts etc, required at the end of Catenary. 

Item No. 24 :- Supply and erection of terminal connector ( 19 mm ) multiple hole 

( Bolted Type):- 

The price shall cover supply and erection of terminal connector 

(19mm)) multiple hole (Bolted type) types specified, including bolts, nuts etc, required at the end of 

Catenary.


.Schedule of work:- Shifting of portal and Auxiliary Transformer and provision of insulated 

catenary near level crossing No. 1 at Patna Junction. 

S No. Description of items Units Qty. RATE (In Rupees) 

(In figs & in Words) 

1 Preparation of design & Drawing for over 

head equipment including switching station 

TKM 1 

AMOUNT (in 

Rupees) 


2 

Supply & Erection of traction masts portals. 

TTC, Dwarf masts main masts of switching 

stations including fabricated structures for 

feeder, A.T. etc. 

(a) Supply 

MT 4 

(b) Erection MT 4 

3 

Supply & erection of fabricated steel work 

other than mast. 

(a) Supply 

MT 1 

(b) Erection MT 1 

4 

Supply and erection of cantilever assembly 

complete set without insulator for 

conventional OHE. 

(a) Supply 

Each 8 

(b) Erection Each 8 

5 

Supply & erection of Stay Insulator. 

(a) Supply 

EACH 8 

(b) Erection EACH 8 

6 

Supply & Erection of Bracket Insulator. 

(a) Supply. 

EACH 8 

(b) Erection EACH 8




7 

Supply & erection of 25 KV post Insulator. 

EACH 8 

AMOUNT (in 

Rupees) 


(a) Supply. 

(b) Erection. EACH 8 

8 Foundation and plinth by concrete in other 

than hard soil and rocky soil. 

Cum. 25 

9 

Supply & erection of copper Jumper. 

(a) Supply. 

EACH 2 

(b) Erection. EACH 2 

10 

Supply & erection of structure bond 

(a) Supply. 

EACH 2 


11 

Supply & erection of inter track bond 

(a) Supply 

EACH 4 


Supply and erection of 9 ton insulator. 

( a ) Supply :- 

EACH 4 

12 

( b ) Erection:- EACH 4 

13 

Supply and erection of number plate. 

( a ) Supply:- 

Each 2 

( b ) Erection:- Each 2 

14 Supply and erection of caution Board. 


Each 14




( b ) Erection:- Each 14 

AMOUNT (in 

Rupees) 


15 Dismentalling charges for OHE shifting , 

Slewing & Cutting/removal of old mast 

including loading & Unloading & 

Transportation of released material from site 

to nearest OHE Depot. 

Nos. 4 

16 Erection of 25 KV/ 230 Volt AT. Each 1 

17 

Supply & erection of Drop out fuse 

assembly. 

(a ) Supply 

Each 0 

(b) Erection Each 1 

Supply and erection of anti climbing device . Each 1 

18 

19 

Supply and erection of insulated Single core 

Unarmoured 240 Sq. mm aluminium XLPE 

Cable . 

(a) Supply 

mtr 70 

(b) Erection mtr 70 

20 Erection and Laying of 50 Sq. mm alumunium 

cable in ground. 

Mtr. 100 

21. Supply and erection of Insulated catenary 

cable in span under over line structure. 


Mtr. 195




( b ) Erection:- Mtr. 195 

AMOUNT (in 

Rupees) 


22. Supply and erection of protective screen at 

on ROB. 


Set of 

2 Nos. 

5 

23 

Supply and erection of Catenary splice 

( 65 sq.mm) . 


Nos. 12 

( b ) Erection:- Nos. 12 

24 Supply and erection of Terminal connector 

( 19 mm) Multiple hole ( Bolted type ) 

Nos. 2 

TOTAL 

Signature of Tenderer with seal


PART – 11, CHAPTER - 1 

GENETALSPECFELEATIONS 

GENERAL 

2.1.1. INTRODUCTION 

This part of Tender papers is divided into seven Chapters and contains general, technical and 

other specifications for design and erection of complete 25KVA.C 50Hz single phase traction 

overheads equipment including regulated tramway type switching stations. L.T. supply transformer 

stations complete with foundations, structures, return Conductors and 25 K.V feeders, if any. This 

part also gives reference to technical specifications of materials and components, procedure for 

submissions of designs an drawings of basic arrangements, components and fittings designs and 

other typical designs relating to overhead equipment including regulated tramway, switching stations 

and booster transformer stations A list off the standard drawings is included in Annexure - 1. Part- 

IV. 

SCOPE OF WORK 

The sections of the Indian Railways to be equipped with tension overhead equipment in 

accordance with this specification are detailed in part-III where in the particular features of the 

sections to be electrified and their special requirements are indicated. 

2.1.2 DELETED 

2.1.3 DELETED 

2.1.4 SYSTEM PARTICULARS: 

The nominal voltage of the overhead equipment will be 25KVA.C 50Hz single phase. The 

supply voltage may however rise up to 27.5 KVA. One terminal of the 25 KVA system will be 

solidly earthed at the traction sub-station and also connected of the running rails. The terminal will 

be connected to the overhead equipment through witch gear provided at the traction sub-station and 

at the feeding station. 

2.1.5. ROLLING STOCK : 

LOCOMOTIVES 

The electric locomotives will generally be equipped with DC/AC motors fed through 

rectifiers/ inverters installed on the locomotives. 

2.1.6. POWER SUPPLY 

(a) SUB-STATIONS- 

Electric power will be supplied at 25 KV A.C 50 Hz. single phase from traction sub-stations 

to feeding stations speed 50 to 80 km apart along the track. 

(b) SWITCHING STATIONS 

Power supply will be controlled to the different sections of traction overhead equipment by 

switching stations. At these stations the switching will be effected by means of "Interrupters" which 

are single pole, non-automatic circuit barkers . 

(c) FEEDING STATIONS- 

Supply will be effected to the overhead equipment through switchgear installed at feeding 

stations. All feeding station will be located normally near the track. 

(d) SECTIONING STATIONS 

The sub-stations can not, as a rule be paralleled and consequently a neutral section of 

overhead equipment with insulated overlaps on either side will be provided approximately midway 

between the two consecutive feeding stations. Neutral section may also by provided at feeding 

stations. Facilities for bridging the neutral section between feeding stations will be provided at 

sectioning stations. 

(e) SUB-SECTIONING STATIONS


In order to facilitate maintenance of overhead equipment and to permit insulation of faulty 

sections and expeditious restoration of power supply in healthy sections. Sub-sections with insulated 

overlaps will be provided between the feeding stations and the sectioning stations. 

OVERHEAD EQUIPMENT 

2.1.10 TRACK 

(a) GAUGE AND TRACK CENTERS- 

The track gauge is 1676 mm (5ft. 6 inch.) .In multiple track zones. the normal distance 

between track centers varies between 4270 mm (40ft.) and 4420 mm (14ft) 6 inch 

(b) SPEED. 

The overhead equipment which shall be of the simple poly graphical type and pre-sag should 

be designed if a maximum speed of 160 m/h (Approx. 100 miles/h) if regulated and for a maximum 

speed 80 Km/h (Approx 50 miles/h) if unregulated. unless otherwise specified i8n part-III for any 

particular section. 

(c) CURVES - 

The minimum radius permissible is 175m (573 ft.) i.e. a 10 degree curve in station limits, 

the curvature at a I in 8.5 turnout is 8 degree i.e. of radius 219m ( 716ft) 

(d) SUPER ELEVATION 

The maximum super elevation is 165mm ( 6.5inch) On curve the minimum setting of 

structures shall be decided on the basis of maximum super elevation ( See para 2310) For purposes 

of design and erection of overhead equipment. the actual super elevation as existing at site or as 

indicated to the contractor shall be adopted. 

(e) LOW JOINTS - 

For low or loosely packed rail joints a difference of 25 mm 41 inch in the level of opposite 

rails may be taken as the basis for estimating the displacement of the pantograph with respect to its 

normal position. 

(f) FORMATION - 

Generally sections with more than one track have common formation in curtain lengths. 

however the formation for different tracks may be separate (see relevant drawing listed in Annexure- 

I part IV ) 

(g) DISPLACEMENT - 

The general design of overhead equipment shall permit on displacement of 100mm of - 

100mm of tracks without difficulty and adjustment of the overhead equipment on this account shall 

be of such a nature as could be dome convenient without changing any component of the overhead 

equipment 

2.1.11. SECTIONING 

(a) INSULATED OVERLAPS. 

Insulated overlaps are provided for facility of isolation. Some of the overlaps may be 

provided with manually operated isolated switches. 

(b) YARD SUPPLY 

The sectioning diagram/s also indicate the tracks in stations yards and siding whose 

equipments is electrically independent from those of other tracks. The overhead equipment in yards 

and sidings is to be fed through isolator switch of interrupter in accordance with arrangement 

indicated in the sectioning diagram/s 

(c) SECTION INSULATORS - 

Section insulators shall be provided as indicated in the sectioning diagrams. or cross-over 

between main tracks and to isolate sections of overhead equipment in yards and sidings. Section 

insulators may also be used to form neutral sections at special locations as indicated in the approved 

drawings.


(d) Deleted. 

(e) FEEDERS & RETURN FEEDERS 25 KV ALONG TRACK FEEDERS- 

25 KV along track feeders may connect sections of overhead equipment to a switching station 

or an isolator switch or gantry. Such feeders will be run usually on traction structures and sometimes 

on independent masts. A single 'SPIDER' conductor shall be used for such feeders. 

f) Deleted 

(g) SCHEMATIC ARRANGEMENTS - 

The different arrangements of feeders return feeders, 25 KV along track feeders and return 

conductors are shown in the drawing listed in Annexure 0I, part -IV 

(h) SECTIONING DIAGRAM - 

The provisional sectioning diagram/s of the sections to be electrified is/are included in part - 

III. 

2.1.12. PANTOGRAPHS 

(a) The out line of the pantograph, its dimensions and its current collecting area are shown in a 

drawing listed in Annexure - 1,Part- IV. 

(b) NUMBER AND PRESSURE - 

Each EMU will equipped with 3 pantographs. The working pressure of the pantograph on the 

contract wire may vary between 5 and 15 Kg/ m 

(c) SPACING IN MULTIPLE HEADED TRAINS - 

The distance between adjacent running pantographs in the case of multiple heading would 

normally be 20 metre. This distance may, however, be reduced to 79 metre between two pantographs 

in very exceptional cases. 

(d) INSULATION CLEARANCE - 

The electrical clearances for the pantograph on tangent tracks and on curves for design and erection 

of overhead equipment shall be based on the schedule of Dimensions 1676 mm Gauge, 1939 printed 

in 1973 in metric units. Issued by the Ministry of Railway (Railway Board), Government of India 

and other orders that be issued by the Railways Board from time to time. 

2.1.13 OVERHEAD EQUIPMENT 

(a) BRIEF DESCRIPTION- 

Essentially the traction overhead equipment shall consist of a standard catenary wire from 

which a grooved contact wire is suitably suspended by means of droppers In order to cater for a 

speed of 160 kmph the contact wire is given a pre-sag of about 100mm for 72 m span and reduced 

suitably for other spans. 

(i) Tramway type Overhead equipment- 

Regulated Equipment- In tramway type equipment only a contact wire is provided without a 

continuous catenary or droppers and is auto-tensioned at the anchor by weight. The contact wire is 

supported by swiveling type of brackets on individual masts as indicted in Drg. no. 

ETI/OHE/G/04204. Moreover the bridle wire is used for more supporting the contact wire. 

Generally, the principles applicable to normal overhead equipment are also applicable to regulated 

tramway equipment except as specified below. 

A. Span- The maximum span is restricted to 63m. The general arrangement 

B. Section Insulators- Where a section insulator assembly is to be provided. The provision of a 

structure to support the assembly is obligatory. The arrangement is shown in Drg. no 

ETI/OHE/G/4203 

C. The arrangement of tramway equipment at anti-creep and points and crossing s are shown in Drg. 

No. ETI/OHE/G/4205 and 04208 respectively.


(ii) Unregulated equipment - 

The general arrangement of tramway equipment to be adopted for head span and cantilever type 

construction is shown in Drg. N0. ETI/OHE/G/04101, The principles applicable to normal OHE are 

applicable to this type of unregulated equipment except as specified below. 

A The maximum span is restricted to 30 m. In station areas, where this type runs side by side 

with conventional equipment with contact and catenary wires. The maximum span may be increase 

31.5 m. 

B. Where a section insulator is to be provided the provision of a structure becomes obligatory. 

(b) CATENARY- 

The catenary wire shall be either of cadmium copper 19/2, 10 mm, 65mm 2 

(c) CONTACT WIRE- 

The contact wire shall be grooved and made of hard drawn copper having 107 sq. mm cross section 

(continuous cost) 

(d) DROPPERS- 

Droppers shall be made of hard drawn round copper wire approximately 5 mm dia Droppers shall be 

spaced not more than 9 mm apart (see Annexure -I, Part - IV) 

(e) ENCUMBRANCE- 

As a general rule, the nominal "encumbrance" i.e. the center distance between the catenary and the 

contact wire at the support shall be 1.4 m. Deviation from this figure will be permitted in special 

cases (e.g. spans near over-bridges, structures with more than one cantilever etc.) 

(f) JUMPERS 

All jumpers connected to OHE conductors shall be of copper only. The in-span jumpers potential 

equalizer jumpers at insulated overlaps and neutral section, shall be of 50 mm sq. nominal 19/1.8 

mm size Flexible jumpers of nominal section 105 sq mm. 19/7/1.06 mm size shall be used at 

overlaps, turnouts, crossings etc. 

(g) BRIDDLE WIRE- As per RDSO specification. 

(h) ANTI THEFT JUMPER- 

Anti theft jumper of 50 sq mm. nominal 19/1.8mm in size shall be used in out of run wire of 

conventional OHE and copper cadmium anti-creep wire as an anti theft measure. 

2.1.14- TYPE OF EQUIPMENT 

The overhead equipment used shall normally be either of the regulated or unregulated type. 

(a) REGULATED 

In the regulated type of overhead equipment, the tension of both the catenary and the contact wires 

shall be maintained at a constant value at all temperatures by means of automatic tensioning devices 

desired to take up the variation in the length of overhead equipment due to temperature variation. 

An anti-creep shall be provided at a point approximately midway between two tensioning devices 

and not more than 750 meters form any one of them. 

The general arrangement of an anti-creep is shown in a drawing listed in 

Annexure-I The arrangement shall generally consist of the galvanized steel wire anchored on the 

masts adjacent to the anti-creep central mast in accordance with the relevant drawing listed in 

Annexure-I. Part -IV. Alternatively, the arrangement may consist of anchoring the catenary on either 

side of the boom of a portal with the contact wire running through and providing a jumper 

connection as per general arrangement shown in typical drawing listed in Annexure-I, Part-IV. The 

purchaser shall indicated the type of anti-creeps to the adopted in the pegging plans. 

(b) UNREGULATED - 

The unregulated type of overhead equipment has no provision for automatic regulation of tension of 

either the catenary or the contact wire.


(c) Tramway Type equipment Regulated Contact wire only - 

In tramway type equipment regulated, only a contact wire is provided without a continuous 

catenary or dropper. The tension in the contact wire is regulated At supper bridle wire is used for 

supporting the contact wire. 

(d) The section in which different types of equipment should be provided are indicated in part-III 

2.1.15 PLANE OF CONTACT 

(a) REGULATED - 

The regulated overhead equipment shall be so erected that the contact wire has the designed sag. 

(b) Unregulated - 

In the case of unregulated equipment the contact wire shall have no sag at an ambient temperature of 

35 0 C 

(c) Tramway Type- 

In Tramway type equipment, the contact wire will have its own natural sag when crated. 

(d) DROPPER - 

Dropper charts to be used for standard span of regulated and unregulated overhead equipment would 

be supplied by the purchaser. Dropper for non-standard spans. span with section insulators and 

special locations shall be calculated by the Contractor in accordance with the method indicated by 

the purchaser and submitted to the Purchaser for approval. 

2.1.16. - TENSIONS 

(a) REGULATED 

(i) In regulated equipment the tension in the catenary and in the contact wire shall be 1,000 kgf. in 

each conductor. 

(b) UNREGUALATED - 

In unregulated equipment the tension in the catenary and in the contact wire at 35 degree C without 

wind shall be 1,000 kgf. in each conductor. 

(c) Tramway Type - 

In regulated type Tramway equipment, the tension shall be 1250 kgf. 

* SUPPLEMETARY INSULATION - 

If a terminating wire passes a live conductor to which it should not be connected, i.e. in a different 

elementary section, the portion of the terminating wire close to the live conductor shall be separated 

by means of insulators. The insulators shall be located in such a manner as to clear the zone of the 

pantograph under the worst conditions and as far away as is possible from live conductors. 

2.1.21- TYPES OF STRUCTURES 

(a) The overhead equipment of main tracks in case of multiple tracks section shall be electrically and 

mechanically independent of the one another by provision of independent cantilever masts to the 

maximum extent possible ( sec Annexure-l for general arrangement drawings). 

(b) HEADSPANS - 

Head span construction may be adopted with unregulated overhead equipment. A single head span 

shall not normally cover more than six tracks (See Annexure-l for general arrangement drawings of 

head span carrying compete overhead equipment). 

* PORTALS - 

In cases where the tracks in a multiple track section do not permit location of independent masts and 

where automatic tensioning of overhead equipment is required, rigid portals may be used. Also in 

the vicinity of points and crossings, portals may be used, provided it is not possible to have 

prescribed setting with independent cantilever masts. These structures shall be equipped with 

standard bracket assemblies for supporting individual equipment of different tracks. The use of such 

structures is to be avoided as far as possible and for this purpose, the Purchaser will arrange to slew 

the tracks if practicable A single portal shall normally not cover more than five tracks . Portal


structures shall also be employed at anti-creep central locations and such portals will have necessary 

guy arrangement. 

(d)FOUNDATIONS - 

Foundations for all structures shall be designed in an economical manner by following the methods 

of design indicated by the Purchaser and observing the schedule furnished by him (See part -II, 

Chapter -II 

2.1.22- CANTILEVER ASSEMBLY 

The bracket assembly carrying overhead equipment shall be o the swiveling type. The assembly shall 

be such that the process adopted will permit easy adjustment of the whole equipment under erection 

to cater for displacement of the track during maintenance up to the extent of 100mm on either side 

except as otherwise relaxed by the Purchase (See Para 2.1.10 (g) ). In special instructions. Pull-off 

arrangements may be used with the approval of the Purchaser (See Annexure -I ) for drawings of 

the bracket assembly and components. 

2.1.23 -OVERLAPS 

Overlaps shall be provided at suitable intervals such that neither the tension length exceeds 1.500M 

nor the fixed anchor to balance weight anchor exceed 750 meters 

2.1.17. - CLEARANCE 

(a) GENERAL - 

The distance between live parts and parts at earth potential ( for parts likely to be earthed shall be as 

large as possible . In all cases the values given in schedule of Dimensions. 1039, 1676 mm gauge 

1939 printed in metric units, 1973 or its latest revision shall be observed along with any other 

supplementary rules, that may be issued by the Railway Board and advised to the Contractor. 

(b) OVER BRIDGES & TUNNELS- 

The clearance which are to be made available at over bridges, signal, gantries and other over line 

structures shall be based on the above rules. 

* PLATFORM SHEDS AND OTHER STRUCTURES - 

In the course of checking the overhead equipment pegging plans, the Contractor shall prepare a list 

of platform sheds and other structures in the vicinity of track to be 

wired The 

clearances to these structures shall be in accordance with those shown in the relevant drawings listed 

in Annexure-l, Part- IV. If these clearances are not available. the Contractor shall advise the 

Purchaser in time to enable the later to take up necessary modifications. 

2.1.18- HEIGHT OF CONTACT WIRE 

(a) Normally, the minimum height of contact wire above rail level shall be 5.50m at mid span under 

the worst temperature and conditions. This height may be reduced under bridges and in tunnels to the 

extent permitted by the purchaser. The minimum height shall be - 80m. In electric locomotive sheds 

and over electric locomotive inspection pits, the minimum height shall be 5.80m. At level-crossing, 

the minimum height shall be 5,50m Any infringement restricting minimum height at level crossings 

will be removed by the Purchaser. 

(b) GRADIENT O CONTACT WIRE - 

Any change in the height of the contact wire shall be made gradually and the maximum slope shall 

not normally exceed 3mm per metre on main lines and 10mm per metre on sidings, The and span of 

any section with a gradient of contact wire shall have a slope not greater than half the main slope. 

2.1.19 - STAGGER 

To ensure uniform wear of contact strips of pantographs, the contact wire shall normally be 

staggered in manner which will be indicated by the Purchaser. 

2.1.20 - TERMINATION - 

(a) GENERAL - 

Traction overhead lines shall be terminated using components specified to Chapter 2.4 The 

termination may be carried forward by one or two spans if anchoring facilities so require.


(b) Terminating wires shall be electrically connected to the conductors with which the are likely to 

approach closely or come into contact under normal conditions 

(a) GENERAL 

The two contact wires at the overlapping zone should be each other in a plane parallel to the track 

and run separated from each other (See Annexure - I for general 

arrangement drawings). 

(b) INSULATED 

I the case of insulated overlaps, the separation between the two contact and the two catenary wires 

shall be 0.5m (See Annexure - 1 for general arrangement drawings) 

2.1.24- POINTS & CROSSINGS 

Arrangements of overhead equipment of different types e.g. regulated, unregulated of tramway at 

points and crossings shall be in accordance with the standard drawings listed in Annexure- 1. 

2.1.25 - SECTION INSULATORS 

(a) BRIEF DESCRIPTION 

The section insulators shall provide effective electrical isolation of two elementary electrical section 

of overhead equipment and permit smooth passage of the pantograph in either direction at all speeds 

up to 70 KM/H The outline of a section insulator is shown in a drawing listed in Annexure - 1. The 

section insulators shall be pf the single wire type. 

(b) SIZE AND WEIGHT - 

The section insulator assembly shall be such that it should be possible to install the insulator in the 

overhead equipment provided the axial distance between the catenary and the contact wire with 

section insulator in position is not less than 450 mm. The weight of the complete assembly shall not 

be more than 45 Kg. for single wire type excluding the weight of the catenary insulator and catenary 

ending clamps. 

2.1.26- ISOLATORS 

Manually operated isolators single or double pole type. With or without earth contact assembly may 

be required to bridge certain section insulators or insulated overlaps (see para-2.1.11). In certain 

large yards, isolators controlling different lines may be grouped together on a gantry (See Annexure- 

1). 

2.1.27. - RETURN CONDUCTORS - Deleted 

2.1.28. - BRIDGES AND TUNNELS 

(a) OVERBRIDGES - 

The complete overhead equipment (i.e. both the catenary and the contact wires) shall normally pass 

under over-line structures. Additional intermediate suspension points shall be provided, if necessary, 

to ensure the specified minimum height of contact wire being maintained. In special cases catenary 

may be anchored on either side of the overline structure and the contact wire carried underneath. 

(b) TUNNELS AND CUTTINGS - 

The arrangements proposed for the equipment in tunnels and cuttings shall take into account the 

special features of each location and shall be in accordance with general design specified in part - II. 

(c) SAFETY SCREENS - 

On over - bridges, metallic protective screens shall be provided in order to prevent any person from 

coming into contact with the live overhead equipment. Such screens shall be properly earthed. 

(d) HEIGHT GAUGES AT LEVEL CROSSINGS - 

Height gauges will be provided at all level crossings in accordance with the general arrangement 

drawings listed in Annexure - 1. 

2.1.29. - BONDING AND EARTHING 

(a) Bonding and earthing should be done in accordance with the code for bonding and Earthing.


(b) LONGITUDINAL AND TRANSVERSE BONDING 

Longitudinal and transverse bonding of tracks, bonding of structures including traction structures in 

rails and associated earths shall be provided in accordance with the above code. 

(c) TRACTION STRUCTURE BONDING 

Every traction mast or structure shall be bonded to a non - track circuited rail unless if it is provi9ded 

with continuous earth wire or it is individually earthed by means of an earthing station. For general 

arrangement drawing (see Annexure - 1). 

(d) Double rail track circuit - 

When track circuits are provided on both rails, traction masts/structures shall not be bonded to rails 

but shall be provided with an earth wire made of steel reinforced aluminum conductor consisting of 6 

strands of aluminum and one strand of steel each of 4.09 mm diameter (conforming to IS : 398 PT. II 

1976 ) The earth wire shall be run on traction masts or structures. They shall be divided into different 

electrical sections not exceeding 1000 m. long. The earth wire in each such section shall be 

connected at two traction structures, situated at a distance not exceeding 250 m on either side of the 

mid-point of the section to two 10 ohm earths which will be provide by the Contractor. Sections on 

which earth wire is required to be provided are indicated in part III 

2.1.30 - L.T.SUPPLY TRANSFORMER STATIONS - (See para 2.1.40) 

2.1.31 - LIGHTNING ARRESTORS 

No lighting arrestors will be provided on the traction overhead equipment. 

2.1.32 - VERAMIC BEADED GLASS FIBER TYPE SHORT NEUTRAL SECTIONS 

ASSEMBLY - Ceramic beaded glass fiber type section insulator assembly shall consist of resin 

bonded fiber glass (or equivalent insulators covered with either Tether for equivalent) or ceramic 

beaded with PTFE spacers (or similar) adequately dimensioned and rated for the application. The 

insulators shall have suitable end fitting for connections to the contact ire through end fitting. For 

smooth passage of pantograph without any shock form contact wire to insulator and vice-versa, 

suitable runners preferably of stainless steel shall be provided. The central position of the assemble 

along with arc trap shall be solidly earthed as the later with earthing clamp is provided to trap any arc 

current caused by break of contact between pantograph and live contact wire when it passes from 

contact wire to insulator. The distance between arc trap and nearest line position shall be adjustable 

up to a max. of 320mm suitable means of suspension of the components of the assembly from the 

catenary conductor shall be provided. The complete assembly shall be as light as possible and so 

constructed that adjustments of components can easily be made during erection of maintenance and 

also for ensuring smooth passage of pantograph. 

In the catenary conductor, resin bonded fiber glass insulators with suitable covering shall be 

provided. The insulators shall have suitable end fittings for connections to catenary wire through end 

fittings. The central portion shall be solidly earthed. 

The neutral section assembly shall be suitable for erection symmetrically on either side of the 

cantilever bracket support with regulated or unregulated conventional / composite OHE where one 

point each for suspension of catenary conductor & contact wire is available as also show in GA 

drawing under Annexure - 1


L.T.SUPPLY TRANSFORMER STATIONS. 

2.1.40 - DESCRIPTION 

L.T. Supply transformer stations - 

L.T. Supply transformer stations shall essentially comprise of a mast mounted transformer connected 

to the traction overhead equipment through dropout fuse switches. The 240 V side shall be connected 

to a distribution board located at the remote control cubicle by drawing for L.T. supply transformer 

stations for single double and multi-track section is in included in Annexure - 1. 

2.1.41 - SCOPE OF WORK - 

The work involved for supply and erection of the L.T. Transformer at Station for uninterrupted 

power supply . 

2.1.42 - CLEARANCES - 

No part of the installation which is live at 25 KV shall be erected at a height less than 3m form the 

datum level. Clearance between any part live at 25 KV and any part at earth potential (or part likely 

to be earthed) shall not normally be less than 500 mm. This clearance may be reduced under special 

circumstances but in no case static clearance shall be less than 320 mm and any dynamic vertical and 

horizontal clearances 270 mm and 220 mm respectively. The clearance between any part live at 3 

KV and any part at earth potential (or part likely to be earthed) shall be not be less than 150 mm 

under static condition and 70 mm under dynamic conditions. 

2.1.43- SETTING OF GANTRIES 

The gantries are normally aligned parallel to the track. The minimum distance of the face of the 

gantry from the center line of the nearest track is referred to as the 'setting' of the gantry. The setting 

shall normally be 3.5 m. Setting of the individual gantries of different stations will be furnished by 

the purchaser. 

2.1.44 - DATUM LEVEL 

The datum level will be the finished level of the gantry mast foundation. All vertical dimension shall 

be stated with respect to this datum level. Datum levels of individual stations will be indicated on the 

location and connection diagrams. 

2.1.45. MOUNTING OF EQUIPMENT AND BUSBAR ARRANGEMENT 

(a) The interrupters and isolators shall be mounted in such a way that these can be manually 

operated conveniently be a person standing on the ground. The indictors showing the ' OPEN' or 

"CLOSED' position of the equipment shall be arranged as to be visible form out-side the fencing 

enclosure on the side of the main arrange 

(b) The bus bar arrangement for typical switching station is schematically indicated in a drawing 

included in Annexure - 1 

2.1.46. FENCING & ANTICLIMBING DEVICES - 

Every switching stations, together with its associated control cubicle shall be enclosed by fencing 

except at feeding stations that are located within the traction sub-station premises. The fencing shall 

have an anti-climbing device also at top. 

At booster transformer and L.T. supply transformer station, suitable anti-climbing devices consisting 

of galvanized steel clamp fixtures shall be mounted on each mast. The device shall be fitted below 

the transformer supporting beam or steel work. The general arrangement drawings indicating the 

fencing and anti-climbing devices, are indicated in Annexure- 1 

2.1.47 NUMBERING 

Each booster transformer, interrupter, potential transformer, L.T. supply transformer and isolator 

shall carry an enameled number plate to be allocated to the various equipments as per specification 

No. ETI/OHE/53 (6/88) with addendum and corrigendum slip No. 1 of (12/88), 2 of(8/89), 3 of 

(6/90), and 4 of (8/92).


2.148 INTERLOCKING ARRANGEMENTS 

Interlock shall be provided, between each interrupter and its associated double pole isolator, to 

prevent operation of the isolator form the open to the closed position or vice-isolator, to prevent 

operation of the isolator form the open position and to prevent operation of interrupter either 

manually or by remote control unless the isolator is lock in the open or closed position. The 

interlocking device shall consist of a lock combined with an electrical contact to make or break the 

remote control circuit on the operation mechanism of the interrupter and a lock on the isolator 

operating mechanism and interlock key for the two locks. 

2.149 EARTHING ARRANGEMENTS 

Earthing of switching stations, booster transformer stations and L.T. transformer stations shall 

generally comply with the code of practice for earthing IS : 3034-1987 except where other wise 

specified below: 

Earthing System - 

(i) Switching Stations - 

Each switching station, two separate and independent earth pits shall be provided, one for earthing 

the HT equipment and other for earthing the L.T. equipment. The general arrangement earthing 

connections at a typical switching station is shown in relevant drawing included in Annexure - 1 

(ii) Earth Circuits - 

Each earth circuit shall take the form of a closed ring and shall be provided with a minimum of two 

earth electrodes. Each earth electrode shall consist of galvanized Iron pipe, 40mm nominal bore at 

least 3.1m long provided with a spike at one end and welded lug suitable for taking minimum size of 

40 x 6 mm mild steel flat, directly at the other. The pipe shall be embedded into the ground. The 

earth electrodes of the HT and the L.T earth circuits shall be located as far apart as it is possible. The 

drawing of typical earth electrode is included in Annexure - 1 

(iii) HT earth circuit - 

The resistance to earth of the HT earth circuit shall be less than 2.0 ohms. If this value cannot be 

achieved with a maximum of four separate but inter connected earth electrodes then the additional 

earth electrodes shall have the surrounding earth treated with charcoal and salt filling. All masts, 

structures, fencing uprights and equipment pedestals shall be connected by the two separate and 

distinct connections to the closed loop of the earth bus. Earth bus and connection to it shall be of 

M.S. flats of a minimum size 40 mm x 6 mm Potential transformers and lightning arrestors shall be 

bonded to masts/structures by 25 mm x 3 mm copper strips. 

(iv) LT earth circuits - 

The LT earth circuit shall also comprise of a minimum of two inter-connected earth electrodes as 

described in Para (iii) above and the total resistance to earth of the earth circuit shall be less than 2 

ohms. This circuit will not form a part of this contract at those feeding stations that are located within 

the traction sub-station premises. All low tension equipment control boards, one terminal of the 

seconderies 

of the potential and LT supply transformers, metal casing of battery chargers, earth connections of 8 

SWG galvanized iron wire to the LT earth bus. The section of the LT earth bus shall be the same as 

that of the HT earth circuit. 

(v) Earth Strips - 

The earth bus and connections of HT earth circuit shall be painted with two coats of red oxide zinc 

chromate primer to IS2074 : 1992 with a minimum thickness of 1:5 mils (40 microns) and with two 

finishing casts of bitumen 85/25 (blown grade to IS : 702 : 19988) with 20% mica to a thickness of 

about 15 mils (375 microns) either by hot application or by brushing a solution of it with suitable 

viscosity to obtain the thickness in minimum number of coats and buried at a depth of 300 mm below 

the ground level.


The earth bus of the LT earth circuit shall run along the wall fixed on wooden gut ties at a height of 

300 mm from the floors. The connections to equipment will run form the bus along the wall .... in 

recesses in the floor. All recesses will be covered with cement plaster after finishing the work. The 

connection of earth strips to each other shall be made by 10 mm dia. Steel rivets or by welding. The 

connection to the various items of equipment and structures or fencing posts shall be made with G.I 

bolts .The earth connection to the structural members hall be made at a height of about 150 mm. 

above the foundation. 

(vi) Inter connection - 

The HT and LT earthing systems shall be interconnected In addition at all switching stations, the HT 

earth shall be connected by the two independent mild steel flats each of minimum size 40 mm x 6 

mm painted with two coats of red oxide zinc chromate primer to IS : 2074 :1992 and finished with 

two coats of bitumen 85/25 blown grade as described above, to the non-track circuited rail in a 

single-rail-track-circuited section and to the neutral point of an impedance bond provided by the 

purchaser where double-rail-track circuiting is employed so as to limit high potential gradients 

developing in the vicinity of switching stations in the event of fault. 

10 L.T. supply Transformer Stations- 

The earthing arrangement of a pole mounted LT supply transformer station shall comprise inter 

connected earth electrode/electrodes having a resistance not exceeding 10 ohms. If this value can not 

be achieved with two electrodes, additional electrodes shall have surrounding earth treated with 

charcoal and salt filling. The Transformer and lightning arrestor shall be connected to the supporting 

steel structure by means of 2 independent connections at the top means of 25 mm x 3 mm copper 

strip. At the bottom, the steel structures shall be connected to the inter-connected earth electrodes 

and to the nearest traction rail by means of two independent connections of mild steel flats having a 

minimum size of 40 mm x 6 mm. In addition, the earth electrode should be connected to the traction 

rail be means of red oxide zinc chromate primer to IS : 2074 : 1992 with a minimum thickness of 1.5 

mils (40 microns) and with two finishing coats of bitumen 85/25 (blown grade to IS : 702 : 1988) 

with 20 % mica to a thickness of about 15 mils (375 microns) either by hot application or be 

brushing a solution of it with suitable viscosity to obtain the thickness in minimum number of coats. 

2.1.50 CABLE CONNECTION 

(a) All PVC cables provided Out-door shall be either laid in the trenches or neatly clamped to the 

structures as approved by the Purchaser. 

(b) Termination of cables - 

The cable shall be terminated neatly and all the crores arranged and dressed properly. Suitable 

indexed terminal strips of ferrules shall be provided at all terminals to facilitate maintenance.


PART - II 

CHAPTER - II 

FOUNDATIONS 

2.2.1 SCOPE 

This chapter deals with the design of foundations and anchor blocks for traction structures carrying 

overhead equipment (including those on bridges), structures at switching stations and booster 

stations and other concrete work. It also deals with the specification for concrete. 

2.2.2 DESIGN OF FOUNDATION 

(a) SOIL PRSSURE - 

For design of foundations for traction structures carrying overhead equipment. the Contractor shall 

determine the type and allowable pressure of soil at suitable intervals and adopt the type and size of 

foundations, suitable for particular locations with the help of the approved employment schedules. In 

cases of particularly weak soil, the bearing pressure may have to be determined for each location 

where so advised by the Purchaser, Soil bearing pressure, using SPT (falling weight equipment) 

should be determined generally for every 5 kilometer interval or less wherever change of soil is 

encountered. In general IS code of practice (IS: 6403:1981) should be followed. In addition, at every 

250 m the soil bearing pressure should be determined by dial gauge type penetro meters. Dial gauge 

type penetro meters shall also be made available by the Contractor at each foundation site so as to 

facilitate cross check at each individual location. For design of foundation for masts and gantries at 

witching stations and booster stations. the Contractor shall determine the type and allowable bearing 

pressure of soil at the locations of such stations and shall prepare designs for the foundations suitable 

for each locations to suit the bearing pressure of the soil in consultation with the purchaser. 

(b) STRUCTURES CARRYING OVER-HEAD EQUIPMENT - 

Foundations for traction structures carrying overhead equipment shall be either of the side bearing, 

side gravity or new pure gravity type according to their location, formation of the sub-grade and 

bearing pressure of the soil. In new filled up soil or cinder formation. pure gravity sand-filled core 

foundations, or foundations with cast-in-site reinforced concrete piles, or cantilever types foundation 

with counter-weights or guyed foundations may be adopted. 

(c) ON BRIDGE PIERS - 

Complete design of foundations for traction structure on bridges to suit different locations and local 

conditions will be furnished by the Purchaser. 

(d) MASTS & FABRICATED STRUCTURES AT SWITCHING STATIONS. - 

Foundations for the masts of gantries at switching stations shall be of the pure gravity type. The base 

of which shall rest on consolidated soil. 

(e) FENCING POSTS - 

Foundation for fencing posts shall rest on consolidated soil depth of unconsolidated soil is less than 

1.5 m below the datum level and shall be rectangular parallel piped in shape. If the depth of 

unconsolidated soil is more than 1.5 m the foundation block shall rest on reinforced concrete piles 

cast-in-site or reinforced concrete foundation may be adopted as desired by the Purchaser. 

(f) TYPICAL DESIGN 

Typical design and drawings of side bearing and new pure gravity and side gravity type foundations 

are included in the drawings listed in Annexure - I. Employment schedules for standard foundations 

for traction structures or carious locations and types are also included in the drawings listed in 

Annexure - I, Part IV 

(g) SPECIAL FOUNDATIONS - 

In the case of foundation at locations not covered by the employment schedules furnished by the 

purchaser, the Contractor shall prepare special designs and furnish full design calculations justifying


the choice of the type of foundations for such locations. In black cotton soil especially pile 

foundations of under reamed type as per RDSO's standard designs (Reference RDSO's Drawings No. 

ERI/C/0062 MOD "A") or any other approved design. may have to be cast at limited locations for 

trial purpose. The tenderer may furnish the technical details of alternative design, construction 

methods proposed to be adopted and their previous background/experience if any. The decision of 

the Purchaser with regard to feasibility and suitability of adoption of the alternative design for each 

type of foundation will be final. 

(h) EQUIPMENT PEDESTALS - 

Pedestals for interrupters and L.T. Supply transformers where required, shall be of mass concrete 

with ht base resting on consolidated soil. 

(j) CABLE TRENCHES - 

The cable trench shall rest on original ground if the depth of unconsolidated soil is less than 0.5 m. If 

the depth of the unconsolidated soil is more than 0.5 m. ,the cable trench shall be made of reinforced 

cement concrete of approved design supported at suitable intervals on concrete pillars. 

2.2.3. BEARING PRESSUR - 

(a) GUIDING INFORMATION - 

Subject to Para 2.2.2 (a) above, the following allowable bearing pressures may generally be expected 

for various kinds soil. The information is given for general guidance only. 

(i) Average good soil in banks and cutting 11,000 kg/sq.m. 

(ii) Moorum soil in cutting 

22,000 kg/sq.m. 

(iii) New banks & bad soils in banks and cutting 5,500 kg/sq.m. 

(iv) Black cotton soil-pure gravity foundation shall normally be adopted. However, under reamed 

pile foundations may be adopted at the option of the Purchaser in limited locations for trail purpose. 

In the case of dry black cotton soil, the soil should be subjected to a bearing pressure as close as 

possible but not exceeding 16,500 kg/sq.m. the depth of the foundation block being not less than 2.8 

m. In the case of wet black cotton soil, the soil should be subjected to a bearing pressure as close as 

possible but not exceeding 8,000 kg./sq.m. 

In the case of hard rock, a hole should be blasted in the rock, or by means of any other drilling and 

pneumatic method and the mast sealed into it with concrete. 

2.2.4 CONCRETE 

Concrete for foundations shall be nominal mix of grade M, 10 obtained by mixing cement, coarse 

aggregate, fine aggregate and water in accordance with proportions given vide Table 3 of IS: 456 

1978 reproduced below. For grouting, muffing, embedding of structures in foundations and for cable 

trenches at switching stations, nominal mix concrete M.15 obtained by mixing materials in 

proportions as indicated in Table - 3 pf IS 456-1978 shall be used Volume batching may be adopted 

vide clause 9.2.2 of Is 45601978 reproduced below- 

IS : 456-1978 

TABLE-3 

PROPORTIONS FOR NOMINAL MIX CONCRETE 

(Clause 8.3,8.3.1 and 8.3.2) 

Grade Total quantity of dry proportion of Quantity 

of aggregate by mass per fine aggregate of water 

concrete 50kg of cement, to of coarse aggregate per 50 kg. 

be taken as the sum of (by mass) of cement max 

the individual masses 

of the fine and coarse 

aggregates max.


1 2 3 4 

KG 

Litres. 

M5 800 Generally 1: 2 60 

M7.5 625 but subject to 45 

M10 480 an upper limit 34 

M 15 350 of 1.5.5 and 32 

M20 250 a lower limit of 1.2.5 30 

NOTE The proportions of the fine to coarse aggregates should be adjusted form upper limit 

to lower limit progressively as the grading of the fine aggregates becomes finer and the maximum 

size of coarse aggregate becomes larger Graded coarse aggregate shall be used. 

Example: 

For an average grading of the fine aggregate (that is zone II of Table 4 of IS 383-1970*) the 

proportions shall be 1:1.5. and 1:2 for maximum size of aggregate 10mm. 20mm and 40mm 

respectively. 

* Specification for coarse and fine aggregates from natural sources for concrete (second revision). 

" In case uniformity in the materials used for concrete making has been established over a period of 

time, the proportioning may be done by volume batching. Provided periodic checks are made on 

mass/volume relationships of the materials. Where weigh-batching is not practicable, the quantities 

of fine and coarse aggregate (not cement) may be determined 

by volume. If the fine aggregate is moist and volume batching is adopted, allowance shall be made 

for bulking in accordance with IS 2386 (Part - III) - 1963"* 

* Method of test for aggregates for concrete part - III specific gravity. density, voids. absorption and 

bulking. 

In judging the acceptability of the materials, quality of concrete and the method of work, the 

Purchaser will generally observe the provisions of the "Indian Standard code of Practice for plain and 

Reinforced Concrete. IS: 456-1978. The crushing strength of concrete shall not be less than the limits 

given below: - 

Crushing strength of 15cm cubes by works test. 

Concrete. At 7 days age. At 28 days age. 

(a) M. 10 70 kg/cm 2 100 Kg/cm 2 

(b) M. 15 100 kg/cm 2 150 Kg/cm 2 

NOTE : (a) Test specimen of works tests shall be taken at the site of work from mixture of concrete 

ready for pouring into the foundation hole. All tests shall be carried out in accordance with IS:516- 

1959 or its latest version. The sample of concrete from which test specimens are made shall be 

representative of the entire batch. 

(c) Age is reckoned form the day of casting.


2.2.5 SIZE AND GRADING OF AGGREGATES 

The graded coarse aggregate 40 mm nominal size ( table 2 of IS : 383- 1970 ) shall be used for 

foundation. A coarse aggregate for grouting muffs and embedding shall be of 20 mm graded nominal 

size as per table 2 of IS : 3830 1970 (specification for coarse and fine aggregate from natural 

sources for concrete). 

Fine aggregate shall be graded from 10 mm downwards. The maximum size of aggregate for under 

reamed pile foundation shall be 20 mm graded nominal size. 

2.2. 6 SAND CORED FOUNDATIONS 

After erection of masts in sand-cored foundations, the core hole of the foundation blocks shall be 

filled with fried sand and covered with a layer of bitumen of 80 mm thickness below 30 mm from 

top level of the block. A hemispherical shaped muff shall be provided on such foundations in lieu of 

standard type. 

2.2.7 SINKING OF CONCRETE SHELLS 

Where the water - level is high, one or more sections of reinforced concrete shells may have to be 

sunk before casting concrete, The size of each of shell shall be 1,200 mm outside dia x 50 mm thick 

x 600 mm high reinforced with 6mm (1/4 inch) dia rods spaced 150 mm apart, both longitudinally 

and circumferentially. the concrete shall be of grade M. 15 as per provisions of para 2.2.4. 

2.2.8. TYPE OF FOUNDATION IN BLACK COTTON SOIL 

Types of foundations in black cotton soil. The foundations in dry black cotton soil should be of type 

BC or NBC or any other type as approved by the purchaser 

2.2.9. CEMENT 

The cement to be used in the construction of RCC structures should be ordinary port land cement to 

IS : 269-1976 

************************


PART -II 

CHAPTER-III 

STUCTURES 

2.3.11 SCOPE 

The chapter deals with the design of steel structures and steelwork for overhead equipment, 

switching stations, booster transformer station and L.T. supply transformer stations and the 

specification for steel and prestressed concrete trial mast. 

2.3.2 TYPES 

Structure and gantries may consist of any or more of the following types: - 

(i) Broad flange beams. 

(ii) Rolled steel joists (I section) 

(iii) Fabricated steel Structures (welded/bolted). 

Structure/ uprights shall generally be embedded in concrete foundation blocks; in special cases 

structures may be secured by means of holding down bolts. Limited quantity (approx 700nos.) of 

circular spun prestressed concrete masts may also be used at the sole discretion of the Purchaser. 

2.3.3 DESIGN 

(a) STEEL STRUCTURES - 

Designs for steel Structures shall, except where otherwise provided, comply with the Indian standard 

code of practice for use of structural steel in General Building Construction IS: 800-1984. The 

thickness of smallest steel sections used shall be 5 mm for galvanized members. 

(b) All the steel structures and small part steel for carrying overhead equipment are to be fully 

galvanized after drilling and fabrication as per specification ET1/ OHE / 13 (4/48) with A & C slip 

number 1 of 5/86, 2 of 4/90, 3 of 4/90 and no painted structures are to be used. 

2.3.4 CANTILEVER MASTS 

(a) LOAD- 

For purposes of design the worst possible combination of all loads that may occur shall be 

considered. 

The load shall include the following (weights to be assumed for design of structures are show against 

important items. 

I. Weight of overhead equipment (1.60 kg/metre for each conventional and 1.32 

kg/metre for each composite OHE) 

II. Weight of bracket supporting the overhead equipment 60 kg/ normal bracket). 

III. Weight of a man (60 kg). 

IV. Weight of an earth wire (0.32 kg/meter). 

V. Weight of feeder, return conductor or other special equipment wherever they occur. 

VI. The effect of eccentricity of vertical and horizontal loads on the brackets due to 

variation in temperature. 

VII. Wind loads perpendicular and parallel to the track. The wind pressure adopted shall 

be taken as that indicated in part - III. 

VIII. Radial forces on the mast, due to stagger, curvature, anchorage etc. 

IX. Weight of the mast it self. 

X. any other load or loads that may occur due to special location of the Structures.


(b) DEFLECTION- 

Notwithstanding the provisions contained in IS:8000 - 1984 referred to in para 2.3.3. above 

regarding permissible deflection, the following shall apply. 

(k) The deflection at the top of the mast due to permanent loads shall not exceed cm and the mast 

shall be so erected that is becomes reasonable vertical after application of permanent loads. 

(ii) The additional deflection under maximum wind pressure shall not exceed 8 cm at the level of the 

contact wire. 

(c) TORSION - 

The torsional rotation of the mast due to permanent loads shall not exceed 0.1 radian. 

(d) TYPICAL DESIGN 

The typical design of a traction mast is included in the set of standard drawings listed in Annexure - 

I, part -IV, Employment schedules for standard masts for various location and types are included in 

the standard drawings listed in Annexure -I part IV, to enable selection of suitable type for different 

locations and local conditions. 

2.3.5 ANCHOR MASTS 

(a) Masts at which overhead equipment ill be anchored shall also normally be of the same type as 

those in other locations. Anchor masts shall normally be provided with suitable guys may be 

permitted in special cases. 

(b) DWARE MASTS - 

At certain location where due to local conditions it is not feasible to anchor the guy rod on a 

foundation block in the ground. a dwarf mast shall be used in accordance with approved designs. 

2.3.6 HEAD SPANS 

(a) LOAD - 

The loads to be considered shall be as detailed in para 2/3/4/(a) as far as applicable and at their worst 

combination. 

(b) SAG FOR HEAD SPAN WIRE - 

The sag of the head span wire shall be approx. one-tenth (1/80) of the span. 

(c) MINIMUM TENSION IN CROSS SPAN & STEADY SPAN WIRE - 

For purpose of design, a minimum tension of 200 kg, shall be ensured in the span wires for worst 

combination of temperature and wind load. 

(d) DEFLECTION OF MAST - 

Deflection at the top of the mast or structure shall be limited to one-eightieth (1/80th) of its height 

above foundation. 

11. TYPICAL DESIGN - 

Typical design for head span mast carrying overhead equipment for 4 tracks will be furnished to the 

contractor. 

2.3.7 PORTALS 

(a) GENERAL - 

Portals shall be of fabricated steel of standard types of purchaser's designs. The most important 

designs are covered by Drawings listed in annexure-I, Part -IV. 

(b) LOAD - 

The load shall be as detailed in para 2.3.4. at (a) as applicable. 

2.3.8 STURUCTURES ON BRIDGES - 

(a) The structure may be either cantilever masts or portal s (hinged or fixed at base) depending on the 

type and condition of bridge pier capping. As far as possible cantilever mast grouted in foundations 

blocks on pier will used. Where this is not possible cantilever masts with holding down bolts or 

suitable portal (hinged or fixed at the base may be adopted. 

(b) Designs of structures on bridges to suit different locations and local conditions will be furnished 

to the contractor by the purchaser.


2.3.9 SPECIAL STRUCTURES - 

In the case of structures at locations not covered by the employment schedules furnished by the 

Purchaser, the contractor shall furnish complete design calculations justifying the choice of the type 

of structures for such locations. 

2.3.10 SETTING OF STRUCTURES - 

(a) The setting is the distance from the Central line of the track, on straight or curve to the face of the 

mast/ structure of fitting located on the mast. 

(b) On straight and outside of curve, the standard setting shall be as per the relevant drawing 

included in Annexure - I Part - IV Minimum setting of structures shall be 2.5 m plus curve allowance 

as required. Whenever this distance can not be provided, specific approval of Purchaser shall be 

obtained before erection. Setting of Portal Upright overlap/turn-out structures, anchoring structures 

and other masts carrying more than one OHE will be 3.0 m wherever possible. 

(c) EXTRA CLEATANCE ON CURVES - 

The minimum setting of structures on curves shall be determined by adding to the above minimum 

figures an extra clearance indicated in the table included in the set of standard drawings listed in 

Annexure - 1, Part - IV 

(d) STRUCTURES WITH COUNTER WEIGHTS - 

In case of structures carrying counterweight assemblies, the term "setting" shall refer to the 

minimum distance of the counter-weight from the track center under the worst conditions of wind. 

(c) STRUCTURES ON PLATEORM - 

The setting of structures on platform shall be not less than 4.75 m. 

(f) STRUCTURES NEAR SIGNALS - 

In the vicinity of signals, structures shall be located in al manner which shall ensure good visibility 

where necessary, the setting shall be increased as per the relevant drawing included in Annexure - 1, 

Part - IV. 

(g) MARKING ON STRUCTURES- 

The value of setting of masts/structures shall be painted on each mast/structure The figure shall be 25 

m in size in white on a red background. In addition, the track level shall also be marked on the 

mast/structure by a horizontal red printed strike. 

2.3.11. NUMBERING OF STRUCTURES CARRYING OVERTHEAD EQUIPMENT 

All structures shall be numbered in accordance with the numbering given in the approved overhead 

equipment layout plans. Enameled number plate shall be provided in each mast or structure as pre 

approved designs (See Annexure - Part -IV) 

2.3.12. STEEL WORK FOR SWITCHING STATIONS AND GANTRIES 

(a) HORIZONTAL MEMBERS OF GANTRY - 

Horizontal member of main as well as auxiliary gantry carrying isolator switches. Insulators, 

potential transformers etc. shall be made from steel sections viz. channels, angles and small joists, 

single or fabricated. They shall preferably be attached to masts by means of clamps to avoid drilling 

of masts sections. 

(b) For purpose of design, all possible loads which may occur in the worst combination shall be 

considered. The loads shall include the followings: - 

(i) Weight of insulators, instrument transformers, isolator switches, bus bars, and their accessories. 

(ii) Loads caused by feeders, along and across tracks, return feeders etc. 

(iii) Loads caused by anchorage due to guying of anchored masts (where applicable). 

(iv) Pull of Push on the structures due to anchorage and radial tension (where applicable). 

(v) Wind load on the different structures, conductors and equipment. The wind pressure shall be 

taken as that indicated in part - III. 

(vi) Weight of men working in the structures.


(vii) Weight of structure itself. 

(viii) Erection loads. 

(ix) Any other load or loads which may occur due to special equipment wherever they occur. 

(c) TENSION OF CONDUCTORS - 

For purpose of designs, the maximum tension of different conductors, without wind load, shall 

normally be as under: - 

(i) Deleted. 

(ii) Maximum tension in the cross feeders at switching station under worst conditions : 

(1) For spans less than 18m 100 kgf. 

(2) For spans more than 18 m 200 kgf. 

(iii) Maximum tension in longitudinal feeders running parallel to the track at the switching stations 

under worst conditions. 1,500 kgf. 

(iv) Tension in anchored overhead equipment in case of sectioning and paralleling stations- 2,000 

kgf. 

(d) DEFLECTION OF GANTRY MASTS - 

Deflection under the permanent loads (at an average temperature of 35 C without wind) at the too of 

the fabricated structures of mast shall be limited to one eightieth (1/80) of its height above 

foundation. 

(e) ANCHOR MAST - 

Masts of the gantry at which feeder or overhead equipment will be anchored at the switching stations 

shall normally be provided with suitable guys, but struts shall not be permitted. 

(f) CHAIRS AND BRACKETS - 

Chairs, brackets and supporting steel work carrying potential transformers, lightning arrestors, 

insulators, etc. shall be made of fabricated steel and be mounted on the main auxiliary gantry 

preferably by means of clamps to avoid drilling of masts sections. 

(g) UPRIGHTS AND FENCING - 

Uprights carrying operation handles of isolators and fencing posts shall be made from steel sections, 

viz. channels, angles of small joists, either single of fabricated. 

2.3.13. STEEL - 

Steel conforming to IS: 2062-1992 shall be used for all fabricated steel work. 

*******************************


PART - II 

CHAPTER - IV 

EQUIPMENTS, COMPONENTS & MATERIALS 

2.4.1. GENERAL 

This chapter deals with the details and specifications of the equipments components & materials to 

be used for traction overhead equipment, switching stations, booster transformer station & LT supply 

transformer stations. This chapter does not cover structures and foundations, which are dealt with in 

part - II chapter II and III. In general based on the specifications issued by various bodies, such as 

Bureau of Indian Standards, British Standard institution etc. Specifications have been issued by the 

purchaser. Such specification may be brought separately form the office of the purchaser. All these 

specification are included in the set of drawings and specifications referred to in Para 1.1.10 

2.4.2 COMPLIANCE WITH STANDARD SPECIFICATIONS 

In the technical specifications of equipments, components and materials, references are made to the 

following standard specifications: 

1) International electro Technical Commission (abbreviated as IEC) publications 

2) British Standard (abbreviated as BS). 

3) Bureau of Indian standards (abbreviated as IS). 

Tenders may however, officer equipment in accordance with the appropriated national standard 

specifications of the country of manufacture. But such offers will be treated as deviations and should 

be quoted for in the manner specified in para 1.1.7 (b) English rendering of the text illustrations of 

the national standard specifications and explanatory notes on the specific deviations form IEC, 

British Bureau of Indian standards, in question, shall also be submitting in form -3 in case of doubt, 

the purchaser shall decide the clause and specification applicable and the contents of the 

specification applicable and the contents of the specification and standard mentioned above shall 

guide such decisions. 

2.4.3 QUALITY ASSURANCE 

The provision of Part-I or quality assurance will apply, including facilities to provided by the 

manufacturer (see para 1.2.25) 

2.4.4 PROTO TYPE TESTS 

(a) FITTINGS, COMPONENTS AND MATERIALS 

All the fittings, components & materials to be supplied by the contractor, in terms of the contract. 

The requisite number of proto types of components shall be supplied free of cost to the purchaser for 

tests and approval. The tests will be conducted in a laboratory selected by the purchaser. Test to be 

carried as per RDSO's specification on. ETI/OHE/49 with its latest amend. 

(b) EQUIPMENTS - 

This comprises inspection and tests conducted on the first equipment of a specified manufacturer, 

which the purchaser considers sufficient to prove that the design is in conformity with the 

specification at the manufacturer's factory. The type tests shall be conducted on each equipments as 

indicated in the individual specifications referred to in para 2.4.1 above, in the presence of the 

purchaser's representative. The contractor shall arrange to get these tests conducted at his own cost. 

(c) RESPONSEBILITY - 

Any testing and approval by the purchaser of prototype shall in no way absolve the contractor of his 

responsibility under the terms of the contract for the equipment supplied and erected. 

(d) EXEMPTION FROM PROTOTYPE TESTS -


If prototype samples of equipments, components or fittings of any manufacturer have already been 

approved in connection with the electrification of other sections of Indian Railways, in the 25KV, 

50Hz single phase A.C system prototype samples of such equipments, components or fittings will be 

exempted from the tests. Supply of bulk quantities shall, however, be effected only after the 

purchaser's prior approval is obtained in writing. 

(e) The results of prototype tests will be communicated to the contractor as expeditiously as 

possible. Amy delay in this respect will be ground for extension of time for completion under para - 

1.2.45. 

2.4.5 INSPECTION AND TESTS : 

These comprise inspection and tests conducted at the manufacturers factory for ensuring quality of 

manufactured items as part of the Quality Assurance programme. 

2.4.6. TEST CERTIFICATES : 

Three copies of the test certificates of successful prototype tests carried out at the manufacturer's 

factory on all equipments shall be furnished to the purchaser with in a month after completion of the 

prototype tests. Three copies of the routine tests carried out on each equipment shall also be 

furnished, after the equipment is passed by the purchaser's representative for inspection (See para 

1.2.25) 

2.4.7. BULK MANUFACTURE : 

Bulk manufacture nay be undertaken only after specific at written approval of the purchaser of his 

representative has been obtained indicating that tests on the prototype are satisfactory. Where 

prototype have already been approved in connection with it manufacturer may proceed after 

exemption from prototype tests is received from the purchaser in writing. 

2.4.8. INTER - CHANGERBILITY : 

All equipments, components and fittings shall be inter - changeable and supplies shall be in 

accordance with the purchaser's designs unless otherwise specifically approved by him. Components 

such as fuses, indication lamps etc. should be replacable with substitutes available indigenously as 

for as possible. 

2.4.9. TECHNICAL SPECIFICATIONS : 

The following specifications (latest revision) will govern the supply and testing of important 

materials, components and equipments : - conductors has to be supplied as per RDSO's Drg. No. 

ETI/OHE/G/5600Mod. A or latest Gr. A 

Structural steel IS : 2062-1992 

IS : 800-1984 

IS : 808-1989 

Tensile testing IS : 1731-1971 

IS : 2004-1991 

IS : 1608-1972 For steel products etc. 

Welding IS : 816-1969 

Disc insulator IS : 731-1971 

IS : 3188-1980 

Dropper wire IS : 282-1982 

Annealed copper IS : 9968 (PT.2) 1981 

Jumper wire


AL Jumper wire IS : 694: 1990 

All aluminium conductor 

IS : 398 (PT-I)-1976 

Aluminum conductors 

Galvanized steel reinforced IS : 398 (PT-III) 1976 

Material for Aluminium IS : 5082-1981 

Tubular bus bar 

Dimensions for Aluminium IS : 2673-1979 

Tubular bus bar 

General requirements for IS : 1387-1993 

the supply of metals and metal 

proudest 

Galvanized stay strand IS : 2141-1992 

PVC insulated cables IS : 1354-(Part-1) 1988 

Tin bronze castings IS : 306-1983 

aluminium bronze castings IS : 3091-1965 

Malleable iron castings IS : 2108-1977 

Coarse and fine aggregate IS : 383-1970 

From natural sources for 

Concrete 

Code of practice for general IS : 456-1978 

Construction of plain and 

Reinforced concrete 

Method of tests for strength IS : 516-1950 

or concrete 

Gray iron castings IS : 210-1978 

Aluminium castings IS : 617-1975 

Copper strip for formed IS : 1897-1985 

Fittings. 

Cadmium copper conductor 

For overhead Rly. Traction. 

Contact wire 

(Continuous cast. ) 

ETI/OHE/50(6/97)AMEND-1(6/97) 

ETI/OHE/76(6/97)


Annealed stranded copper 

ETI/OHE/3(2/94)With A&C ship 

Conductors for Jumper wire No.1of (4/95) 

Copper Bus bar. RE/30/OHE/5(11/60) IS - 613 

Structural Steel tubes. 

ETI/OHE/11(5/89). 

Hot dip galvanization of steel 

ETI/OHE/13(4/84) with A&C Slip 

Masts (Rolled and fabricated) No.1 of (5/86). 2 of (4/90)&3 of (4/90). 

Tubes and fittings used on 25 KV 

A.C. OHE 

Stainless Steel wire ropes. 

25KV solid core insulator 

Including those for polluted 

Zones. 

25KV single and double pole 

Isolator. 

ETI/OHE/14/(9/94)with incorporated 

Slip No.. 1 of (9/95) & 2 of (1/97). 

ETI/OHE/15(9/91). 

ETI/OHE/16(1/94). 

Bolts, nuts and washers. ETI/OHE/18(4/84)with A&C Ship No. 1 of Nov 

1984 2of (6/87) & 3 of (9/87) 

Aluminum Alloy Section and 

Tubes. 

Standard drawings for Traction 

Overhead equipment. 

ETI/OHE/21(9/74) 

RE/OHE/25(3/66) 

Section Insulator Assembly ETI / OHE / 27(8/84) 

with A&C ship No. (10/92) 

Enameled Steel Plates 

Galvanized. Steel Wire 

ETI/OHE/33A. 

ETI/OHE/36(12/73). 

Fittings for 25 KV 50 HZ A.C. 

ETI/OHE/49(9/95) WITH A&C Slip No. 

Traction equipment. 1OF (3/97). 

25 KV Potential Transformer. ETI/PSI/8(10/92) With A&C Slip No. 4 (6/97). 

25 KV Potential Transformer. ETI/PSI/8(10/92) With A&C Slip No. 4 (6/97). 

25 KV drop out fuse switch & ETI/PSI/14(1/86) With A&C Slip No. 1 

operating pole for use with 

10 KVA,25 KV/230 VLT

Electrical construction, ECR, Page 86 of 117 

supply transformer (4/87). 

25 KV/240 V,10KV LT ETI/PSI/15(11/92) With A&C Slip No. 1 

supply transformer of MAY /93. 

Metal oxide gapless type 

ETI/PSI/71 Rev. 1 (1/87) WITH A&C 

Lightning Arrestor for use slip no. 1 of 3/87.2 of 9/90. 3 of (2/91) 

On 25 KV side. 4 of 12/91. 5 of (8/94). 

110 V Lead Acid Battery ETI/PSI 157 (7/94) A&C slip No. 1&2 

40 AH SMF. 

25KV Vacuum interrupter single pole ETI/PSI 46 (9/94) 

3-Pulley type regulating 

ETI/OHE/48A (9/85) With A/C Slip 

Equipment (3:1) No.1 of 11/87 

Ceramic beaded short ETI/OHE 63 (5/91) With A/C slip No 1 

Neutral section assembly of (10/92) & 2 of (2/94) 

110 V 40 AH battery Charger SMG. ETI/PSI/156 (7/94). 

Aluminium alloy stranded Catenary ETI/OHE 54 (2/86) with A/C slop no. 1 of 

wire 19/2.79 mm (11/89) & 2 of (10/92) 

Bi-metallic (AL-CU) STRIP ETI/OHE/55 (4/92) 

Insulated cadmium copper catenary ETI/OHE/75(4/95) 

2.4.10 NOMENCLAQTURE AND MARKING 

(a) All components and fittings supplied by the contractor's shall bear the respective 

identification number and a mark to identify the source of supply except in the case of 

galvanized tubes, and cuts and / or any other fittings as may the agreed to by the 

purchaser. 

(b) In case of insulators, galvanize steel tubes, stainless steel wire rope and conductors, 

name of manufacturer shall be specified in "As Erected " drawings for identification. 

2.4.11. STEEL WORK AND PROTECTION AGAINST RUST 

(a) GALVANISING 

All ferrous materials and fittings shall be hot dip galvanized according to the specification 

ETI/OHE 13 (4/84) 13(4/84) with A/C slip no 1 of (5/86) no.2 of (4/90) & no. 3 of (4/90). 

(b) PAINTING 

Some components or parts may, with the approval of the purchaser , be protected only by 

paint and parts so protected shall be given two coats of composite aluminum primer and two 

coats of aluminum paints the second coat of aluminum paint shall be applied after 

erection. 

(c) RECTIFICATION AT SITE 

In days of modifications which would damage the protective coat, repairs to such damage 

would be allowed only in exceptional circumstances. The part damaged shall be protected in 

accordance with the method indicated in specification ETI/OHE 13 (4/84) WITH a/c SLOP0 

NO. 5/86, 2 OF 4/96 & 3 OF 4/90


or any other method approved by the purchaser The contractor shall in all such cases obtain prior 

permission from the purchaser before carrying out repairs 

2.4.12. BRACKET ASSEMBLY COMPONENTS ARRANGEMENT FOR NORMAL OHE 

(High Speed) 

The arrangement of the different fittings and structural components of bracket assemblies are 

shown in drawings listed in Annexure-1 Part -IV The employment schedule of bracket will be 

furnished to the Contractor. 

(a) BRACKET : 

Bracket tubes shall be of seamless cold drawn or electric resistance weld steel complying with 

ETI/OHE 11(5/90) with an insulator near the support The length of the tubes shall be such that there 

is a free length of about 200mm beyond the catenary suspension bracket. To facilitate adjustment 

during track maintenance (See Para 2.6.10 (b) 

(c) TUBULAR STAY ARM : 

Steel tubes with adjustable steel rods shall be for tubular stay arm of all bracket assemblies. 

(d) REGISTER ARM : 

Steady arm shall normally be fitted in all assembles for overhead equipment in running. The steady 

arm shall be of light alloy BFB section arranged to work always in tension in accordance with 

ETI/OHE 21 (9/74) Steady arms of secondary tracks may be off solid galvanized steel Roding .The 

contact wire shall be fixed by a simple swivel clip without threaded parts Steady arms shall normally 

be 1/0 m long but for special locations such as turn outs. Diamond crossing etc Steady arms shall be 

longer as indicated in the relevant drawings listed in Annexure-1 Para- IV 

Bent Steady arms of aluminum alloy tubes conforming to Spec ETI/OHE/21(9/74) shall be used for 

neutral Section overlap and in the Central mast of a 4 span insulated overlap. 

2.4.13 DROPPERS : 

(a) GENERAL DESIGNS : 

The droppers shall generally be designed as shown in standard drawings and made of copper wire 

about 5mm diameter conforming to IS 282:1982 and shall be attached to the catenary wire by a 

copper dropper clip the Contact wire shall be held by a clip of aluminum bronze as shown in the 

standard drawings. The distribution of dropper shall be in accordance with standard design. 

(b) LOADING : 

The droppers shall be able to withstand a vertical load of 200 Kg at the point of attachment to the 

contact wire and the clip shall not slip under a horizontal load of 120 kgf. 

(c) The permissible tolerance in the overall length of a dropper will be +/-5mm, 

2.4.14 INSULATORS : 

(a) 

All insulator shall be of the solid core type. All solid core insulators shall conform to 

ETI/OHE/15(9/91). 

(b) INTER CHANGEABILITY : 

For free inter changeability only the following types insulators shall be used. While the 

shapes of the insulators may vary slightly from those shown in the drawings, the essential 

dimension of the galvanized malleable cast iron caps as given in standard drawings shall be 

adopted. 

(i) 

(ii) 

(iii) 

Stav Arm Insulators: - These insulators will be used in conjunction with the tubular stay 

arm of all bracket assemblies. 

Bracket Insulators: - These will be used at the base of each bracket assembly in conjunction 

with bracket tubes. 

9 - Tonne Insulators: - These will be used at all places for cut- u and terminal insulation 

including those in return conductors, but excluding those in earth wire.


(iv) 

Solid core post Insulators: - These will be used at all places for supporting isolators 

mechanisms, bus bars, jumpers etc. of 25 KV. 

2.4.15. END FITTINGS AND SPLICES GENETAL DESINGNS : 

(a) Terminating or ending fittings and splices in copper conductor shall be of the cone type 

clamping on both the inner and cuter strands of conductor except for contact wire ending 

clamps which may be of wedge type. The arrangement shall be easy to install and also e such 

as would apply the clamping pressure gradually without shock (See ETI/OHE/49 (9/95) with 

A.C. slip No. 1 of 13.27). 

(b) LOADING : 

All the parts shall be capable of withstanding without damage, a load greater than the ultimate 

strength of the wire to which they are fitted. In the case of thread no damage shall occur when 

they are subjected to a load equal to two third of the ultimate strength of the wires. 

(c) RESTRICTED USE OF SPLICES: 

The use of splices shall generally be avoided and their use shall be restricted to the minimum 

necessary. Over main tracks, there shall be no splice in the contact wire on first erection. 

Elsewhere, not more than one splice be used in any tension length (i.e. anchor to anchor) for 

which prior approval shall be taken form the Purchaser. Additional splices may, however, be 

provided to enable retention of conductors which are found defective during and /or after 

erection. Splices may also be permitted for repair of damage due to thefts or Railway 

accidents. 

(d) STRENGTH OF ASSEMBLED FITTINGS: 

The strength of fittings assembled with appropriate conductors or wires shall not be less than 

(e) 

that of the conductor or wire itself. 

ADDITIONAL TERMINATING WIRES 

Cadmium copper stranded wire of 65 sq. mm nominal section or 37/2.1 mm (130 mm as used 

in head span construction) may be used as additional terminating wires of extending single 

and double conductors respectively. if termination at the nearest structures is not feasible. 

2.4.16 ELECTRICAL CONNECTIONS FOR OHE 

(a) GENERAL DESIGNS : 

All electrical connections between conductors shall be made by parallel clamps. The general 

arrangements of connections are shown in the standard drawings, listed in Annexure -1 

(b) 

JUMPER 

Copper jumper shall be of any of the followings :- 

(i) Large jumpers of annealed copper in accordance with specification ETI.OHE/3 (2/94) 

with A and C Slip No. 1 of (4/95). 

(ii) Small jumper of annealed copper in accordance with the specification IS: 9968 (PR. 

2) - 1981 & ETI/OHE/3 (2.94) A & C No . 1 

(c) BUSBARS : 

Bus bars or rigid jumpers of copper where used shall be of 18 mm $ copper rod in 

accordance with RE/30/OHE/5 (11/60 IS. 613). Aluminium bus bars wherever used shall be 

of 36/28 mm tubing (See 2.4.22). Aluminium tubular bus bars shall be made of AI. Alloy 

grade thickness shall be as per class. I. IS- 2673-1979. 

(d) 

FEEDERS: 

Feeders shall be of all Aluminium conductor 19/3/99 mm /SPIDER 

2.4.17 TERMINAL CONNECTORS FOR EQUIPMENTS 

Interrupter, Booster Transformer and L.T supply Transformer shall be supplied by the 

purchaser along with the terminal connectors suitable for taking jumper/bus bar as required


However. ALCU strip shall be provided by the Contractor for bimetallic connections 

wherever required. 

2.4.18 REGULATING EQUIPMENT: 

(a) GENERAL : 

A general arrangement is shown in the standard, drawings listed in annexure -1, part - IV. 

The regulating equipment should have a minimum adjustment range of 950 mm. Stainless 

steel wire rope in accordance with ETI/OHE/14 (9/94) with incorporated A&C slip No. 1 to 4 

shall be used in these equipments and these shall be sufficiently flexible for the purpose. 

(b) COUNTER WEIGHT : 

Counter weights and arrangements used shall be such that those could be accommodated 

within 330 mm (13 inches) measured transverse to the track under the worst conditions of 

wind. The vertical upward movement shall be limited with a fixed top. 

(c) 

REDUCTION RATIO: 

Reduction Ration in the arrangement used shall be three in case of three pulley type 

2.4.19 HEAD SPAN CONSTRUCTION : (See Para 2.1.21 and 2.3.6) 

(a) SIZE AND FACTOR OF SAFETY : 

All span wires used in head span construction shall be of stranded cadmium copper conductor 

65 sq. mm cross section All the wires shall be designed with a factor of safety of not less than 

4 under the most unfavourable conditions. 

(b) TURN BUCLES : 

Each span wire shall be equipped with a turn buckle at each end of the span. 

(c) ADDITIONAL INSULATORS : 

Additional insulators shall be provided as necessary in head span. cross span and steady span 

wires to ensure electrical independence between the equipment in different elementary 

electrical sections. 

2.4.20 (ISOLATORS : 

25 KV Isolator switches shall comply with specifications as indicated in Para 2.4.9. 

2.4.21 INSULATION LEVEL : 

Interrupters, potential transformers line indication type, 42 KV lighting arrestors and other 

equipments shall be suitable for insulation level indicated in the relevant specifications. 

2.4.22 BUSBARS 

(a) 

No splicing will normally be allowed in the tubular bus bars unless the length of the bas bars 

exceed 6 m. 

(b) GENERAL : 

The bus bar shall be clean, smooth, mechanically sound and free form surface and other 

defects. Provision shall be made when necessary to allow for expansion and contraction of 

bus bars caused by temperature variations the open ends of the bus bar shall be covered by 

suitable caps, whenever the tubular bus bars are required to be bent, the radius of the bent 

shall be not less than 200 mm. 

JOINTS : 

(c) 

(d) 

The joints in bus bars shall be mechanically and electrically sound so that the temperature 

rise under normal working condition does not exceed 40 degree C for and ambient 

temperature of 65 degree C. 

All Aluminium joints shall be thoroughly clean and smeared with suitable oxidation 

inhibiting joint compound before and after assembling the joint. Similar procedure shall be 

followed for connecting the equipment the terminals to the aluminium bus bars with 

bimetallic connectors.


2.4.23 CABLING 

(a) CABLE FOR LT SUPPLY : 

240V AC supply form LT supply Transformer at switching station shall be brought and 

terminated on the LT AC distribution Board in the remote control cubicles at the switching 

station 1100V 25 sq. mm aluminium 2 Core PVC insulated PVC Sheathed and steel armored 

heavy duty cable conforming to IS: 1554 (Part-I_ : 1988 

(b) CONTROL & INDICTION CIRCUITS : 

All other Cables for control and indication at switching station shall be 1100 V grade PVC 

insulated and sheathed armoured (heavy duty) complying with IS 1554 (Part -I) : 1988. The 

cables shall be Provided as indicated in the Table below. 

PURPOSE RUN CIRCUIT CORE SIZE & No OF 

Control & indication From each 

Of interrupters interrupter to 

terminal Board 

Heater supply for (i) Form interrupter 

interrupter control to interrupter 

mechanism cabinet (ii) Form each 

interrupter to fuse 

box. 

(iii) From fuse box 

to distribution 

Board. 

Battery Supply (i) 110V Battery 

Charger to 110V 

(ii) 110 V Batter to 

15 A, DC fuse box. 

(iii) 15 A DC fuse 

box to terminal 

board. 

VOLTAGE MATERIAL CORES 

110V D.C 2.5 sq. mm 2 

240V A.C 

- do- 

-do- 

110V D.C 

110V D.C 

110V D.C 

4.0 sq. mm 

Aluminium 

- do - 

-do- 

2.5 sq. mm 

copper 

2.5 sq. mm 

copper 

2.5 sq. mm 

copper 

NOTE :(1) In case of feeding station which are located within the traction substation premises, the 

cables shall be run form individual equipment and terminated inside the sub station control room 

(2) Notwithstanding the size of cable given above, the Tenderer shall assured that various 

cables would suit the ratings of equipment offered by him. 

(c) SPECIFICATION: 

The cables shall be resistant to decay abrasion, acids alkalis and other corrosive materials. All 

indoor wiring all on walls shall be clamped neatly on teak wood battens fixed to the wall be means of 

wall plugs wooden pegs. The cable run lay out at a typical switching station shown in the relevant 

drawings already include in Annexure -I 

2.4.24 LITERATURE OF EQUIPEMENT 

The contractor shall within six months of issue of letter of acceptance of tender, supply 25 

copies of detailed schedule, catalogues and drawings of all parts of the equipment. 

2 

-do- 

-do- 

2 

2 

2 

******************************************


PART-II, CHAPTER-V 

DESIGNS&DRAWINGS 

2.5.1. General 

(a) This Chapter deals with the procedure for approval of designs and drawings 

(b) The type designs shall be as few as possible to cover the largest field of application 

consistent with economic consideration. 

(c) In all drawings as far as possible only such symbols as are in international use, shall be used. 

2.5.2. CONTRACTOR’S DRAWINGS 

(a) The Contractor shall submit to the Purchaser for approval except where otherwise specified 

below, all detailed designs and drawings which are necessary to ensure correct supply of 

equipments, component and materials and to enable correct and complete erection of overhead 

equipment, switching stations, LT supply transformer stations in an expeditious economic 

manner. 

(b) RESPONSIBILITY: 

It is to be clearly understood that all original drawings and designs shall be based on a 

thorough study. General designs and dimensions shall be such that the contractor is satisfied 

about the suitability of the designs for the purpose. The purchaser’s approval will be based on 

these considerations and not withstanding the purchaser’s acceptance, the ultimate responsibility 

for the correct design and execution of the work shall rest with the contactor in terms of the 

conditions of contract. 

2.5.3. STANDARDS FOR DRAWINGS 

All designs, legends, notes on drawings and schedules of materials shall be in English and 

shall be prepared in the metric system. All designs and drawings shall conform to 

specifications RE/ OHE/25 (3/66). 

2.5.4. BASIC DESIGNS 

(a) STANDARD DESIGNS : 

Where the Contractor adopts designs and drawings conforming to the standard designs, 

drawings and specifications of the research, designs and standard organisations. Manakangar, 

Kucknow-226 011 (RDSO) for basic arrangements, equiprnents, components & fittings of 

traction overhead equipment, switching stations, L.T. supply transformer stations and adopts 

employment schedules furnished by the purchaser, he shall verify each design, drawing and 

employment schedule and satisfy himself that these are correct before use within two months 

of the issue of letter of acceptance of Tender the contractor shall indicate to the purchaser, the 

list standard basic arrangements, components and fittings drawings and employment 

schedules, which he will adopt for the purpose of the work. The procedure outlined in Para- 

1,2,23 shall be followed approval of basic designs. The contractor for his use and reference 

shall obtain reproducible transparent film (50 microns) each of such standard basic 

arrangement, component & fitting drawings and employment schedules from Dy Chief 

Electrical Engineer, E.C. Rly. MHX on payment as per the prescribed rates. 

(b) DEVIATIONS : 

Normally deviations from the standard drawings of the purchaser will not be accepted. 

However, in exceptional cases where the contractor desires to suggest improvements as 

results of his experience or other development, he shall justify his proposals with supporting 

explanatory notes.


(c) STANDARD DRAWINGS EMPLOYMENT SCHEDULES ETC.-Deleted 

2.5.5 SPECIAL DESIGNS 

(a) In case where standard designs, drawings or employment schedules do not cover requirement 

of special locations or site conditions, the contractor shall submit his own designs or 

drawings along with supporting calculations and notes for scrutiny and approval of the 

purchaser. 

(b) Such special designs shall generally by in conformity with basic designs furnished by the 

purchaser and in accordance with the specifications. If the Contractor wishes to adopt special 

designs, which do not conform to the general basic designs of the purchaser, he shall submit 

alternative designs and drawings justifying his proposals. 

2.5.6. PARTICULAR DESIGNS AND WORKING DRAWINGS FOR OHE 

(a) PURCHASER’S PEGGING PLANS : 

The pegging plans for sections to be equipped indicating the type of overhead equipment, 

locations of masts and other general particulars prepared on the basic of the latest survey will 

be furnished by the purchaser. The Contractor shall verify and check these plans at site. 

(b) CONTRACTOR’S PEGGING PLANS : 

If the Contractor is called upon to carry out survey and prepare overhead equipment pegging 

plans, he shall submit such plans for approval after checking their feasibility at site. 

(c) PRINCIPLES OF LAY OUT : 

The Contractor shall in all cases ensure that the final pegging plans are in conformity with the 

latest principles of preparation and checking of OHE layout plans and sectioning diagram 

issued by RDSO. 

(d) PROVISIONAL LAYOUT PLANS : 

The Contractor shall prepare and submit overhead equipment layout plans incorporating the 

following information’s :- 

(i) The run of wires in different thickness or color in special cases and termination. 

(ii) The run of wires for future wiring indicated to the contractor in dotted lines. 

(iii) Erect position of all cut in insulators, including section insulators. 

(iv) Direction and value of stagger at each traction structure location. 

(v) Clearance of live conductors to structures in the vicinity including bridges, signals, gantries 

etc. 

(vi) Lay out of feeders. 

(vii) Jumper connections and connection to switches and switching stations. 

(viii) List of infringements. 

(ix) Kilometer nos. and type of structures. 

(x) Location and no. of switches. 

(xi) Schematic sectioning diagram drawn to convenient scale showing section insulator, no. of 

switches, elementary sections and connections to switches and switching stations. 

(xii) Table giving references of approved profile drawings, feeder layout plan and other relevant 

drawings. 

(xiii) Implantation. 

(xiv) Location of mast. 

(e) OHE PROFILE DRAWINGS : 

After completion of the overhead equipment layout plans, the contractor shall prepare an 

overhead equipment profile drawings showing the actual height of the contact wire under 

each over line structure the gradient and height of the contact wire on either side of the 

structure and the encumbrances at structures until normal height or contact wire and 

encumbrances are restored.


(f) CROSS SECTION DRAWINGS : 

While the layout plans are being finalised, the contractor shall submit for approval, in-so-far 

as yards between outer most points and crossing are concerned cross section drawings for 

each structure showing guy rods, if any indicating the cross section of the formation, height 

and nature of soil, type of foundation block structure proposed, reverse deflection of the 

structure and all necessary particulars for erection of the foundation and the structures. In the 

preparation of drawings, care shall be taken to show all obstruction such as signal wires, 

point rods and their correct location in references to track/tracks as well as underground 

obstructions like pipe cables, etc after connecting such information from the site. 

In open line sections, cross sections shall be submitted in the following proforma, 

separately for each railway line for special foundation drawings with all necessary details 

shall be submitted to the purchaser. In case of side bearing foundation with extra depth, 

formation details at such location and necessary details of anchor foundation will be 

submitted. 

CROSS SECTION FOR THE OPEN ROUTE SECTION 

Km............................. 

to............................. 

Sl. No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 

................................................................................................................... 

LOCATION NO. 

CHANGE 

D SETTING 

DISTANCE 

E in m. 

T 

A 

I 

L 

S 

STEP DISTANCE 

in m. 

F.B.M.CODE 

SOIL TYPE & 

PRESSURE 

FOUNDATION TYPE & SIZE 

MAST SIZE AND 

LENGTH in m. 

REVERSE DELECTION 

(cm.) 

SUPER MAST


LENGTH in m. 

CROSS ARM 

LENGTH in m. 

ANY OBSTRUCTION 

(G) FINAL LAYOUT PLANS : 

After all the cross section drawings in a section covered by the layout plan are finalized and 

foundations are cast, the contractor shall revise the layout plans to take into account any 

modifications to the locations of structures during the process of casting of foundations. 

(h) STRUCTURE ERECTION DRAWINGS : 

The c contractors shall then submit structure erection drawings for each structure 

incorporating all the details included in the cross section drawings for the structure and as 

erected at site and the details or the bracket assembly, mast extensions, isolator mounting 

frame and anchorage of overhead equipment, feeder or return conductors proposed for each 

structure together with all particulars necessary for the correct erection of overhead 

equipment at the structure. For structure with isolators, the details of electrical connections 

shall also be incorporated. In open line sections the contractor shall submit structure erection 

particulars in the tropical proforma as given below separately for each main line track in 

addition to particular details as indicated in the proforma for cross-section drawings. 

Modification to this proforma is found necessary will be finalised at time of structure erection 

drawings. 

Sl. No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 

................................................................................................................... 

LOCATION NO. 

CHANGE 

1. ENCUMBRANCE 

2. CONTACT WIRE 

HEIGHT 

3. STAGGER 

(I) CATENARY 

(II) CONTACT 

4. STAY ARM 

(I) (a) M 

(b) CODE 

5. BRACKET 

(i) (b) M 

(ii) CODE 

6. REGISTER


(i) 

(ii) 

C/D (M) 

CODE 

7. STD/BENT 

CODE 

8. IDENTIFICATION MARK OTHER REFERENCES/CODES FOR MISC ITEMS LIKE 

STEEL WORK FOR STAY/BRACKET ATTACHMENT MISC. SINGLE/DOUBLE CAT 

ETC. WILL BE INDICATED. 

9. Deleted 

2.5.7. PARTICULARS DESIGNS & DRAWING FOR SWITCHING 

STATIONS & BOOSTER STATIONS. 

(a) PURCHASER’S LOCATION PLAN ETC. 

The location plans and schematic diagrams of connection for all the switching 

stations, and L.T. supply transformer stations will be furnished by the purchaser to the 

contractor. These will indicate the following as applicable. 

i) Overhead equipment layout in the vicinity of switching or other stations. 

ii) Location of main masts. 

iii) Arrangement of cross feeders and longitudinal feeders to be anchored on the 

gantry if any, including jumper connection to the overhead equipment. 

iv) Scheme of connections of interrupters. 

v) Position of the remote control cubicle with respect to the switching stations. 

vi) Fencing outline at the switching stations. 

The contractor shall satisfy himself about the correctness and applicability of the location plans given 

by the purchaser before adopting them for detailed designs. 

(b) DETAILED DRAWINGS : 

The Contractor shall submit for a approval of the purchaser. The following drawings :- 

i) Cross section drawings for each switching station indicating the cross section of the formation 

transverse to the tract at such location of main masts and longitudinal section parallel to the track 

along the central line of the interrupters. This drawing shall be prepared after an accurate survey and 

site and shall indicate the nature of the soil, its bearing capacity, and compactness and in case of 

loose soil, transverse section of the parent soil. In the preparation of the drawings care shall be taken 

to show all obstruction to be removed such a signal wire, rods and their correct location with 

reference to the tracks as well as underground construction like pipes, cables etc. after collection 

such formation from the site. 

ii)GENERAL ARRANGEMENT DRAWINGS : 

General arrangement drawings for switching station indicating the general arrangement of all 

equipment, run bus bars, position of pedestal insulators steel framework and fencing. The drawing 

shall also given a schematic connection/diagram and an isometric view of bus bars and connection 

The drawing shall include an elevation view of the switching station from behind at transverse cross 

section and plan sectional views at the level of feeder anchors insulator beams, potential transformer 

and ground. Each drawing shall have a schedule of all equipment required at the switching stations 

along with drawing reference of details of the equipments. 

iii) STRUCTURAL DRAWINGS : 

Structural assembly drawing for switching station indicating the steel framework assemble. 

The drawing shall include one elevation view of the steel framework assemble from behind. A 

transverse cross section and plan views at various levels such as at the level of feeder anchors,


Insulator beam/and ground. In the assemble each component number shall be marked with its 

reference number. The drawing shall also have a schedule of component numbers along with 

drawing reference various numbers. The weight of the component numbers shall be indicated in a 

separate weight schedule. The drawings shall be prepared for the various structural components. 

Individual drawings shall be made for each component and this shall include all fixing board, nuts 

and washers whose sizes will be maintained all the drawings. A unit isolator beams, potential 

transformer beam weight of the component shall also be given in the drawings. 

iv) FOUNDATION LAYOUT AND CROSS SECTION DRAWINGS : 

Foundation layout and cross section drawings for each switching station indicating by out of 

all foundation in plan, transverse cross section of various foundation through central line of main 

masts, interrupters, fencing uprights and LT supply transformers if any, an longitudinal sections 

parallel to track through the central line of the cable trench. all foundation shall be marked serially on 

the drawing and listed in a schedule on the drawing indicating the volume of concrete for each 

foundation block. 

v) FENCING LAYOUT DRAWINGS : 

Fencing layout drawings for each switching station indicating the layout of the entire fencing 

and anti climbing device in plan. Each up right, fencing plan and fixture on the upright shall be 

indicated on the drawing by its reference number. A schedule of components viz. uprights, panel 

fixture and barbed oil shall be included in the drawings indicating the drawing reference of 

components. An individual drawing shall be made for each type pane, fencing and fixture for 

mounting the anti climbing device. The drawing of each fencing post shall indicate the unit weight of 

the fencing post. 

vi) EARTHING LAYOUT DRAWINGS : 

Earthing layout drawings for each switching station indicating the layout of full earthing 

system in plan. The drawing shall show the location of earth electrodes and mark the run of earthing 

strips and connection to each equipment, mast, fencing post and fencing panel. All components shall 

be marked with their reference for further details of the run of conductors and connections, separate 

drawings which may be common to all switching station may be made and reference to this drawings 

mark on the layout. A schedule of components shall be made out in the given drawing reference of 

components. 

vii) CABLE RUN LAYOUT : 

Cable run layout of each switching station indicating inter connection between various 

equipments, indoor and outdoor along with schematic arrangements and physical disposition of 

equipment, color coding or code no and the index scheme adopted for terminal. The drawings shall 

also indicate the cable size and grades of insulation. The quality of various cables required shall be 

indicated on the drawings. 

viii) EQUIPMENT DRAWINGS : 

Equipment drawings applicable to all switching station except the ones for the equipments to 

be supplied by the purchaser. Drawings shall be dimensioned and should indicated :- 

1. Fixing or mounting hole dimensions and arrangement. 

2. Net weight of the equipment. 

3. Characteristic and rating of equipment. 

4. Circuit and diagram. 

5. Overall dimensions and other important dimension.


6. Height and vertical and horizontal dimensions of all exposed live 

parts; and 

7. Notes explaining the operation of the equipment. 

ix) MISCELLENIOUS DRAWINGS : 

Misc. drawing applicable to all switching station. This drawings shall include drawings or sketched 

made for study of clearance, isolator alignment details, scheme of interlocks, no plates or various 

equipments and “U” bolts for cable mounting, caution or instruction boards, out riggers for bus bars 

support and non-standard bus bar connectors. 

x) EMPLOYMENT SCHEDULES & CHARTS : 

Employment schedules and charts applicable to all switching stations. These will include. 

1. Employment schedule for pure gravity type of foundation for main masts for various direct 

leads and bending moments; 

2. Employment schedule for all other foundations for various depths of parent soil from 

the datum level. 

3. Sag tension charts for cross feeders for various spans and tensions. 

2 .5.8 LT. SUPPLY TRANSFORMER STATION DRAWING 

The contractor shall submit for approval to the purchaser drawing for L.T. Supply 

transformer station, similar to those detailed for switching station in 2.5.7 (b). The following 

drawings may, however, be combined together. 

i) Cross section and foundation layout drawing; 

ii) General arrangement, structural and earthing layout drawings. 

2.5.9 SCHEDULE OF QUANTITIES 

Within 30 days of issue of letter of acceptance of tender, the Contractor shall assess the 

quantities of various items of work including various component and fitting as covered in schedule-1 

and submit schedule-1 (assess-1) along with the corresponding quantity of various fittings and 

components included in for approval of the purchaser St. an assessment shall be revised at suitable 

intervals after the first assessment is approved till the work is completed. Such re-assessments 

denominated as schedule-1 (assess-2) (assess-3) etc. shall also be submitted for approval of the 

purchaser. 

On receipt of approval of each final layout plan from the purchaser the following schedules 

of quantities relating to each layout plan shall be submitted within a fortnight. 

i) Schedules of nos of masts. types, weight of different masts and total weight of 

masts : 

ii) 

Schedules of no. of foundation, types, volume of different foundations and 

total value. 

iii) Schedule of quantities of various items of work other that masts and foundation 

under schedule -1 

iv) Schedule of net tension lengths of contact, catenary and feeder wires and lengths 

required to be ordered. 

v) Schedule of lengths of other wires and conductors required to be ordered. 

vi) Schedules of small parts and steel work to be supplied by the purchaser.


2.5.10. SUBMISSION OF DRAWINGS & SCHEDULES 

a) The submission of designs and drawings for approval shall be in manner indicated (Sec also 

Para - 1,2,23). 

GENERAL: 

In case, contractor wish to deviate from standard drawings he should submit to the purchaser revised 

drawings with full details of deviation sought explaining the necessity of deviation, calculations and 

other supporting documents. The purchaser if satisfy about the necessity and adequacy of deviations, 

shall refer the matter to RDSO for necessary approval. In the case of deviation on working drawing, 

decision shall be communicated by the purchaser to the Contractor. The no. of copies of drawings, 

which shall be submitted, are indicated in the following sub-para. The purchaser will return one copy 

for the drawing either with approval subject to modification where necessary of with comments. The 

purchaser shall endeavor the return the copy within a month. Where drawings are returned with 

comments or approval subject to modifications. The contractor shall submit to the purchaser within 

15 days of receipt of such advice drawings for approval taking in to account the comments of 

modifications. Also the contractor shall as far as possible avoid comments by discussions with the 

purchaser’s engineers. No drawings shall be resubmitted without incorporating the modifications 

required by the comments of the purchaser, unless the purchaser has agreed to the deletion of such 

comments. 

(b) DEVIATION FROM STANDARD DESING: 

In case of deviation from standard designs and drawings copies of correspondence and drawings 

shall be sent in duplicate to the Dy.Chief Electrical Engineer (CON) East Central Railway, 

Mahendrughat, Patna.or his successor/nominee (whose address will be intimated in the due course). 

In the particular case of deviation in the design of fittings the drawings submitted by the contractor 

shall be actual manufacturing drawings samples of the modified fittings shall also be submitted, after 

the drawings are approved (see para-1.2.23). 

(c) SPECIAL DESIGNS: 

Special designs to meet the requirement of particular locations and location conditions shall 

be submitted in due time in duplicate for approval. 

(d) PURCHASER’S PEGGING PLANS: 

Two copies to the purchaser’s pegging plans shall be sent back after verification if found 

correct. If modifications are required free pegging plans incorporating the modifications 

shall be submitted in two copies for approvals (See paras-2.5.6) 

(e) CONTRACTORS PEGGING PLANS: 

When the Contractor is called upon to survey and prepare pegging plans, he shall send three 

copies f such plans while submitting them for approval. 

(f) CROSS SECTION DRAWINGS: 

Close, section drawings shall be submitted for approval in two copies for convenient sections 

at a time separately for sections within station limits and section outside station limits. Such 

drawings shall be submitted progressively and as far as possible without gaps (See Para- 

2.5.6)


(g) OHE LAYOUT PLAS AND PROFILE DRAWINGS: 

Overhead equipment layout plans, provisional and final and profile drawings shall be 

submitted for approval in 03 copies (See para-2.5.6) 

(h) STRUCTURE ERECTION DRAWINGS: 

Structure erection drawings shall be submitted for approval in two copies for a section at a 

time separately for sections within station limits and sections outside station limits, 

progressively and without gaps. 

(i) SCHEDULE OF QUANTITIES: 

Schedules of quantities for each approved layout plan/switching station shall be submitted 

for approval in two copies. 

(j) SUB-SECTION FEEDER DRAWINGS: ----------------------Deleted 

(k) All drawings for switching stations, booster transformer stations and LT Supply transformer 

station shall be submitted for approval in three copies. 

(l) DISTRIBUTION COPIES: 

On receipt of purchaser’s un-qualified approval to the Contractor’s drawings, schedule of 

quantities, the Contractor shall submit original tracings of those drawings and schedules for 

the signature of the purchaser in token of approval within 7 days of the receipt of approval 

and the purchaser shall as far as possible return the same to the contractor within 7 working 

days thereafter. On receipt of these tracings from the purchaser , the contractor shall submit 

copies for distribution to field officers and other departments as indicated below within 7 

days of receipt of approved tracings:- 

(i) Special designs 2 copies 

(ii) Final pegging plans 2 copies 

(iii) Structure cross-section drawings 2 copies 

(iv) OHE layout plans 2 copies 

(v) OHE profile drawings 2 copies 

(vi) Structure erection drawings 2 copies 

x) Drawings for switching stations, booster transformer stations, 9 copies 

In all the above cases, the contractor has the option to supply only 06 copies of the approved 

drawings provided one of them is a transparent paper print. 

2.5.11. COMPLETION DRAWINGS AND SCHEDULES 

After completion of works, all drawings and designs submitted by the contractor and 

approved by the purchaser shall be made up to date incorporation actual supply and erection 

particulars including the name and make of insulators, galvanized steel tubes, stainless steel 

wire rope etc. The mark of conductors shall be specified in the “As erected” OHE layout 

plans, SED and other relevant drawings for identification. Such drawings and schedules shall 

then be verified and corrected, if necessary, by the contractor jointly with the purchaser’s 

representatives. The verified and corrected drawings shall be supplied in 4 sets. One of which 

shall be transparencies of linen or film reproduction or, any other durable material approved 

by the purchaser.2.5.12. ADDRESS Address to which designs and drawings should 

be submitted are indicated in Part -III.


PART-II, CHAPTER-VI 

INSPECTION AND TESTING 

2.7.1. SCOPE 

This chapter deals with the inspection and testing of completely erected overhead 

equipment, switching station, booster transformer station and L.T. transformer 

stations supply as provided in Part-I. 

2.7.2. OVERALL PERFORMANCE 

The overall performance of the overhead equipment should be such as would 

Permit collection of current by electric rolling stock with full load at speeds, up to and 

including the maximum specified for the design of overhead equipment, smoothly, without 

mechanical shocks or prejudicial sparks (See Para 2.1.10) and without under heating in the case of 

other equipment. 

2.7.3. RESPONSIBILITY 

The general tests of overall performance stipulated below and only supplementary to other 

tests on structures, foundations, equipment, components and fittings as specified in Part-II, Chapter- 

II,III & IV. Any testing and acceptance by the purchaser of overall performance shall be subject to 

the general terms of guarantee which shall continue to be valid as provided for in part-I, Chapter-II. 

2.7.4. TESTS OF OHE 

a) GENERAL 

As soon as a section is ready for inspection and testing the contractor shall advice the 

purchaser in writing. Test to be carried out by the purchaser will be done in presence of the 

contractor’s representative and shall include the following apart from the other reasonable tests that 

the purchaser may like to conduct with a view of ensure himself of the soundness of the equipments 

and their erection in strict compliance with the specifications. 

b) INSULATIONS 

The strength of the insulation and the dielectric strength of the entire equipment as installed 

shall be tested with a 2500 volt Merger. 

c) CONTINUITY 

The electrical continuity of the line and existence of had contractor if any will be tested with 

a Merger. 

d) ELECTRICAL INDEPENDENCE 

The electrical independence of individual elementary sections in to the another shall be 

tested with a Merger. 

e) SWITCHES 

All isolators shall be tested for smooth and trouble free operation. 

f) TENSION DEVICES 

All automatic tensioning devices installed shall be tested for sensitive functioning and 

adjustment.


g) STAGGER AND HEIGHT 

The stagger and height of contact wire over the entire section of completed overhead 

equipment and the clearances available shall be measured and the measurement shall be checked 

against approved drawings. These measurements shall be carried out at low speed with a vehicle or 

device to be arranged by the purchaser, the movement of which will follow the track levels as closely 

as possible. Tolerances that will be permitted on the dimensions indicated in the approved drawings 

are shown in Para-II, Chapter-VI. 

The actual position of the two contact wires, relative to each other, at overlaps and turnouts 

shall also be checked. Special attention shall be paid to a smooth movement of pantographs over 

section insulators, particularly those that are likely to be frequently traversed. 

h) MECHANICAL BEHAVIOUR 

Mechanical behavior of the entire equipment shall be tested at various speeds under normal 

pantographs pressure without energizing the overhead equipment. 

i) ENERGISING 

If the overhead equipment, after being subjected to the above test in an unenergised 

condition, is found to be satisfactory, it will be energized with the normal 25 KV AC supply. 

j) POWER COLLECTIONS 

Tests shall then be conducted to check if the power collection performance of the overhead 

equipment satisfactory after ensuring that the contact wire is adequately clean. For the purpose and 

observation core shall be attached next to the electric locomotive. The behavior of the overhead 

equipment will be watched at various speeds. Power collection shall be considered unsatisfactory if a 

long blue flash is observed, indicating that the contact between the contact wire and the pantograph 

is not continuous. 

2.7.5. INSPECTION AND TESTING OF SWITCHING STATION ETC. 

a) GENERAL 

As soon as a switching station, booster transformer station or L.T. supply transformer station 

is ready for inspection and testing the contractor shall advise the purchaser in writing. Testing will be 

carried out by the purchaser at contractor’s cost jointly with the contractor. These shall include the 

tests, which the purchaser may like to conduct with a view to assure him of the soundness of the 

equipments and their erection on compliance with these specifications. However, testing equipment 

such as those indicated below and staff required for the tests shall be provided by the contractor free 

of charge. 

i) Oil testing equipment. 

ii) 2500 V and 500 V mergers. 

iii) Earth meager and accessories. 

iv) Continuity test apparatus. 

v) Avometer. 

The Contractor shall full responsibility for these test inter-alia his other Responsibilities.


b) VISUAL INSPECTIOSN 

Visual inspection, which shall include check for satisfactory workmanship, shall cover all 

conditions, painting, plastering cleanliness of all insulators etc and compliance with Indian 

Electricity Rules. 

c) OPERATION TEST 

This test will be conducted on every individual items of equipment such as interrupters, 

isolators, relays etc to ensure that the equipment as a whole is functioning properly and is 

mechanically sound i.e. in the particular case of isolators the fixed contact and knife blade have been 

correctly aligned and operation does not cause undue strain on the equipments. The operation test 

will be carried out with the high-tension installation disconnected from the supply, but by actuating 

power devices where shall be provided. Continuity test of high-tension connections after setting 

much interrupters and isolators in their respective positions shall also be conducted as per of the 

operation test. 

d) INSULATIONS : 

The strength of insulation of the various item of equipment and the entire installation as a 

whole shall be tested with a 2500V/500V meager or as required. 

e) DI-ELECTRIC STRENGTH OF OIL 

The di-electric strength of the oil of the Booster transformer & LT supply transformer, at 

each station shall be tested before commissioning in accordance with IS: 335-1983 should this be 

found not correct, the Contractor shall arrange at his own expenses to have it rectified. 

f) ISOLATORS 

All isolators will be tested for smooth and trouble free operations. 

g) INTERRUPTORS 

Operation of trip and close coils for interrupters, shall be tested for satisfactory performance 

with the respective equipment de-energized. 

2.7.6. EARTHING 

a) Earth wires will be checked for continuity and electrical isolation every it from approx. 

b) Clearances between earth wires and out-of-run wire of overhead equipment and signals shall 

be checked. 

c) Earth resistance shall be measured separately for each earth electrode in the case of 

interconnected earth electrodes, the net resistance of the interconnected electrodes shall also be 

measured. 

2.7.7. DETAILS PROCEDUREAS FOR TEST 

The detail procedure for inspection and testing will be furnished to the contractor. The 

contractor shall submit the results of tests in the Performa which will be furnished by the purchaser, 

in quadruplicate. 

N.B.- All 25KV Insulators to be inspected by RDSO/ Authorized representative of CEE/ECR


PART - III 

PARTICULAR SPECIFICATIONS 

3.1. INTRODUCTION : 

This part of the specification is complementary to Part -I 

3.2. LOCATION : 

The place is located near Gaya of Danapur division of E.C. Railway under jurisdiction of 

Bihar State. 

3.3. TRACKS TO BE EQUIPPED 

(a) The route and track lengths of the section to be equipped with overhead are as under:- 

Section 

TKM 

Taregna-Nadaul 6 

3.4. GENERAL PARTICULARS : 

(a) The section generally passes through open country in domestic area .The soil character strips of 

the entire area are generally normal soil. The type of soil ranges from normal to filled up soil. The 

bearing capacity of the soil is likely to very from 5500 to 11000 Kgf/Sqm. The actual bearing 

capacity. shall. lower, be determined in accordance with part - II 

(b) ACCESS TO ROAD : 

The section is approachable by metalled /Kachha Road. 

(c) Remodeling works affecting the tracks to be wired will be intimated as a when the work is 

planned/commenced at various stations. 

3.5.CLIMATIC CONDITIOSN : 

(a) TEMPERTURE 

For the overhead equipment which will be in open space a minimum temperature of 4 degree C and 

the maximum temperature of 65 degree C are to be considered. The mean temperature shall be taken 

as 35 degree C. 

(b) RAINFALL : 

Rains occur generally from June to November. The average rainfall during the monsoon season is 

approx 135 cm annually. 

(c) HUMIDITY : 

The maximum relative humidity is nearly 50% to 85% 

(d) THUNDER STORMS : 

The region is subject to thunder storms during monsoon from June to September 

(e) WIND PRESSURE : 

The section falls in the red wind pressure zone (IS:875). Accordingly, the basic wind pressure 150 

Kg/Sqm. In terms if IS 875:87 amendment is to be adopted. Increased wind pressure is to be adopted 

on embankments more than 10 m.i.e. 200 Kgf/Sqm. The Confirms with the wind pressure adopted 

by state Electricity Board for the design of their EHT transmission lines. 

3.6.ROLLING STOCK : 

Steam locomotives with chimney height not exceeding 4.27m, electric locomotives with height no 

exceeding 4.165m their pantographs in the locked down position and diesel locomotives 4,42m 

(14ft.6inch.) hi8gh would run on this section. 

3.7. OVER DIMENSIONAL CONSIGNMENTS : 

The maximum height of over dimensional consignment which runs on this section is 4.80m (15'9") 

with. movement to specified lines.


3.8. POWER SUPPLY : 

(a) Electric power will be supplied temporarily from Gaya/ F.P. to the overhead equipment. (b) 2.9. 

L.T. SUPPLY TRANSFOMER STATIONS:D 

Pole mounted auxiliary transformers will be installed for giving power supply to colour light 

signaling, repeater stations, switching stations, traction sub-stations, MEMU Shed and some other 

places as required by the purchaser In double line section, important stations, 1 No. auxiliary 

transformer will be provided at each station to be fed from one different elementary section. 

3.11. DELETED. 

3.12 DELETED. 

3.13 TRACTION SUB-STATION FEEDERS: 

25KV feeders from traction sub-stations to feeding posts are not envisaged at present. 

3.14. TRACK CIRCUTTS : 

Track circuits are to be provided by S&T and Civil Engg. Depts. cross bonds for track circuit is to be 

provided by the tenderer. 

3.15. LABOUR AND MATERIALS : 

Unskilled labour is available almost allover the section while skilled labour would be available 

generally at the main towns in the section. 

3.16.CONTRACTOR'S OFFICE: 

It is obligatory on the part of the contractor to establish an office at a suitable place at Patna for 

planning, design and for expeditious finalisation of particular designs and working drawings. The 

office should be headed by a qualified engineer whose credentials shall be approved by the purchase 

engineer In addition, the contractor will have to establish field construction offices at convenient and 

approved locations for co-ordination and progressing of field works. 

3.17. CONTRACTOR'S DEPOT 

Suitable space shall be made available for the contractor to set up one main depot for the work. 

3.18. DURATION OF TRAFFIC BLOCKS : 

(a) Track occupation may be granted at any time during day or night to suit convenience of traffic 

operations and will ordinarily be granted on one track at time over a distance covered by one or two 

consecutive block sections. Work trains will normally be allowed to take advantage of block 

shadows. Normally, the total advantage of block on any section will be maximum of 3 to 4 hrs, in a 

day for all the tracks in the section taken together, the total of blocks on any track being limited to 2- 

3 hrs. in a day. b lock provided may be utilized for one or more work trains or track lorries or ladder 

trolleys to suit convenience of work 

(b) Material train will not ordinarily be given for laying out the feeders except where crossing of 

track is involved which will have to be paid out manually generally. However, material train can be 

used to drop the feeder drums along side the track. The contractor shall however arrange to get the 

drums dropped to the maximum possible extent by road.


PART IV 

ANNEXURE-I 

LIST OF STANDARD DRAWING & SPECIFICATION 

This annexure contains reference to drawing number, charts, schedule specification and other date 

referred to in various paragraphs of the tender paper. 

All references to drawing, charts, schedules or specifications given in the Annexure shall be taken to 

the latest revisions of such drawings, charts and schedules or specifications as issued by purchaser. 

(A) LIST OF STANDAR DRAWINGS : 

S.No 

Brief Description 

Drawing Mod. No. 

Series Number 

1 Extra allowance for settings of structures on ETI/OHE/G 00111 B 

curves 1676/ETI/OHE/G mm. broad gauge. 

2 Standard setting of structures in the vicinity of -DO- 00112 C 

signals (broad gauge). 

3 Typical design of side bearing foundation. -DO- 00131 

4 Typical design of new pure gravity foundation ETI/SK/C 131 

5 Typical design of side gravity foundation (SPC -DO- 142 

8000 kgf/m 2 

6 Typical design of cantilever masts RE/33/G 00141 

Sh. 3 

7 Standard drilling schedule of OHE mast 9.3m, 

9.4 and 9.6 m long RSJ and BFB 

ETI/OHE/G 00144 

Sh. 1 

Sh. 2. 

Sh .3 

8 Span and stagger chart for conventional OHE, 

wind pressure 75, 12.5 and 150 Kgf/m 2 -DO 00202 A 

9 Employment schedule for cantilever mast 

regulated OHE without return conductor and 

without earth wire (wind Pressure 112.5 Kgf/m 2 ) 

(Catenary 65 Cu contact wire 107/Cu) 

10 Employment schedule for cantilever mast 

regulated OHE without Return conductor and 

without earth wire (wind pressure 75 Kgf.m 2 ) 

(Catenary 65/Cu Contact wire 107/ Cu.) 

ERLC 00701 

Sh.1 

ETLC 

A 

A 

11 Employment schedule for cantilever masts 


without earth wire (wind pressure 112.5 Kgf/m 2 ) 

(Catenary 65/Cu. Contact wire 107/Cu 



without earth wire (wind pressure 75 Kgf/m 2 ) 

(Catenary 65 /Cu Contact wire 107/Cu) 


regulated OHE without return conductor but 

without earth wire (wind Pressure 12.5 Kgf/ m 2 ) 

(Catenary 65/Cu contact wire 107/Cu.) 


Sh.2 

ETI /C 0102 

Sh.2 


Sh.3 

D 

A 

E




without earth wire (wind Pressure 75 Kgf/ m 2 ) 











unregulated OHE without return conductor and 

without earth wire (wind Pressure 75 Kgf/ m 2 at 

35 degree C and 28 Kgf at 4 degree C) (Catenary 

65/Cu contact wire 107/Cu.) 


unregulated OHE without return conductor and 

without earth wire (wind Pressure 75 Kgf/ m 2 35 

degree C and 28 Kgf at 4 degree C) (Catenary 


ETI/C 0702 

Sh.3 

A 

ETI/OHE/G 00153 D 


Sh.4 

ETI/C 0702 

Sh.5 

ETI/C 0702 

Sh.5 

19 General distribution of droppers. ETI/OHE/G 00161 

20 Out line of pantograph (broad gauge and m. RE/33/G 00181 

gauge). 

21 Employment schedule for OHE overlap central 

location with 3.0 m/ implantation (wind Pressure 

75 Kgf/ m 2 ) (Catenary 65/Cu contact wire 

107/Cu.) 

ETI/C 0709 

22 Employment schedule for OHE (9.5) overlap 

central location with 3.0 m. / implantation (wind 

Pressure 75 Kgf/ m 2 ) (Catenary 65/Cu contact 

wire 107/Cu.) 

23 Employment schedule for OHE (9.5) overlap 

central location with 3.0 m. / implantation (wind 

Pressure 75 Kgf/ m 2 ) (Catenary 65/Cu contact 

wire 107/Cu.) 

24 Employment schedule for 9.5, 200 x 200 x 49.9 

kg. masts (wind Pr. 75Kgf/ m 2 ) (Catenary. 65/Cu 

contact wire 107/Cu.) 

25 Employment schedule for 9.5, 200 x 200 x 49.9 

kg. masts (wind Pressure 112 Kgf/ m 2 ) (Catenary 


26 Employment schedule for OHE mast (9.5m.) WP 

75 kgf/m. overlap anchor location with 3.0 m. / 

implantation (Cooper OHE) 

27 Employment schedule for OHE mast (9.5m.) WP 

112.5 Kgf/m. overlap anchor location with 3.0 m. 

/ implantation (Cooper OHE) 

ETI/C 0910 

ETI/C 0711 

ETI/C 0713 

ETI/C 0714 

A 

ETI/C 0715 A 

ETI/C 0716 A


28 General formation os single track embankments RE/33/G 01102 A 

and cutting (broad gauge) 

Sh.1 

29 General formation of multiple tracks (1676 mm RE/33/G 01103 A 

gauge). 

Sh.1 

30 Standard formation of single track embankments RE/33/G 01103 A 

and cutting (broad gauge.) 

Sh.1 

31 Standard anchor arrangement RE/33/G 01401 E 

32 Anchor arrange with dwarf mast ETO/OHE/G 01402 B 

33 Schedule of anchor blocks for BG track. ETI/OHE/G 01403 B 

Sh.1 

34 Double guy rod arrangement with anchor (blank ETI/OHE/G 01403 B 

cotton soil) 

Sh.2 

35 Schedule of anchor bocks for BG track (black ETI/OHE/G 01403 B 

cotton soil) 

Sh.3 

36 Rock anchor for BG track. ETI/SK/G 208 B 

37 Standard guide tube arrangement of mast and RE/33/G 01501 B 

structures 

38 Arrangement of antitheft guide tube ETI/OHE/SK 44/1 

39 Trapezoidal counterweight and arrangement of ETI/OHE/G 01302 

OHE structure. 

40 Arrangement of 3 KV and 25 KV pedestal -DO- 01601 

insulators support on OHE mast and portals. 

41 Standard arrangement for mounting of no. plate ETI/OHE/G 017701 

on OHE structures. 

42 Schematic arrangement of regulated overhead -DO- 02101 

equipment. 

43 Typical arrangement of OHE on cantilever masts -DO- 02102 

for double track section. 

44 Typical arrangement for fixing of bracket 

assembly on 9.5 m mast and structure to suit 

-DO- 02102 

Sh.3 

raising of track (in future). 

45 Mast on platform (1676 mm gauge) -DO- 02104 

Sh.2 

46 Details of bracket arrangement on tangent and 

curve track 

-DO- 02106 

Sh.1 

47 Details of bracket assembly on structure and RE/33/G 02107 

dropped arms. 

48 Single bracket assembly on structure and dropped RE/33/G 02107 

arms. 

49 Box type cantilever arrangement. ETI/OHE/G 02108 

50 Arrangement of anti-creep -DO- 02111 

51 Standard cantilever arrangement for boom anchor -DO- 02113 

and anti-creep location 

52 Schematic arrangement of un insulated overlap 

(Type- 1) (3&4 span overlaps. 

RE/23/G 02121 

Sh.1 

53 Schematic arrangement of insulated overlap. -DO- 02131 

54 General arrangement of regulated OHE at turn 

out (overlap and cross type) 

ET/OHE/G 02141


55 General arrangement of regulated OHE at cross RE/33/G 02151 

over (overlap and cross type) 

56 Arrangement of neutral section. ETI/OHE/G 02161 C 

Sh.1 

57 Arrangement of short neutral section. -DO- -do- 

58 schematic arrangement of un-regulated overhead RE/33/G 03101 

equipment. 

59 Standard termination of OHE (regulated and -DO- 03121 

unregulated) 

60 General arrangement of unregulated OHE at turn ET/OHE/G 03151 

out (overlap and cross type) 

61 General arrangement of unregulated OHE at 

cross over and diamond crossing (overlap and 

-DO- 03152 

Sh.1 

cross type 

62 General arrangement of unregulated OHE at 

diamond crossing. 

-DO- 03152 

Sh.2 

63 General arrangement of head span -DO- 03201 

64 General arrangement of pull off. -DO- 03301 

65 In span jumper connection between catenary and -DO- 05101 

contact wire 

66 Continuity jumper connection at un insulated -DO- 05102 B 

overlap 

67 Arrangement of antitheft jumper ETI/OHE/SK 432 

68 Connection at turn out ETI/OHE/G 05103 B 

69 Potential equalizer connection at insulated -DO- 05104 

overlap and neutral section. 

70 Dimension at diamond crossing -DO- 05106 A 

71 General arrangement of connection to OHE by a -DO- 05124 

cross feeder (Spider) 

72 General arrangement of connection at switching -DO- 05125 

stations on double track section. 

73 General arrangement of connection to switching ETI/OHE/G 05126 

stations on multiple traction section(with spider 

cross feeder). 

74 Suspension of 25 KV feeder (Spider on OHE -DO- 05143 B 

mast) 

75 Termination of feeder return conductor and RE/33/G 05145 D 

return feeder(copper and aluminium). 

76 Arrangement of suspension of double spider 25 -DO- 05152 C 

KV feeder and return between substation and 

feeding station. 

77 Assembly of section insulators. RE/33/G 05181 B 

78 General arrangement of earth wire on OHE mast. ETI/OHE/G 05201 A 

79 Arrangement of transverse bonds. -DO- 05251 A 

80 Suspension arrangement of Aluminium, return ETI/OHE/G 05307 A 

conductors (Spider) on traction structures. 

81 Connection of return conductor to track. -DO- 05106 B 

82 Suspension of return conductor (Spider) from -DO- 05311 C


booms of structure, 

83 Connection between OHE and aluminium return -DO- 05413 A 

conductor at booster stations. 

84 Mounting of 25KV isolators on OHE structures -DO- 05513 A 

Genera arrangement. 

85 Anchor assembly on "N" and "O" type portal ETI/OHE/P 3250 B 

upright. 

86 Structure bonds. -DO- 7000 C 

87 Earthing Station. -DO- 7020 B 

88 Longitudinal rail bond. -DO- 7030 D 

89 shot supper mast assembly. ETI/C/P 8010 E 

90 Long super mast assembly -DO- 8020 B 

91 Bracket attachment assembly on portal upright -DO- 8030 A 

(N,O,R,G and double BFB type) 

92 Supper mast assembly on portals. -DO- 8050 B 

93 medium supper mast assembly. ETI/OHE/P 8060 C 

94 Standard portal (N.O.R.G and double BFB type) ETI/C 0064 

95 Volume chart and equivalent foundation. -DO- 0058 

Sh.1 

96 Volume chart and equivalent foundation. -DO- C-01 

97 Dwarf mast foundation on Wet & dry block -DO- C-02 

cotton soil. 

98 Special BFB portal for 5 tracks (General -DO- 0026 B 

arrangement). 

99 Protective screen at foot over and road over -DO- 0068 C 

bridge. 

100 Chart for portal foundations. -DO- 0005/68 

101 Muff for OHE structures -DO- 0007/68 C 

102 Structure muff for sand core foundation -DO- 0012/68 D 

103 Details of remote control cubicle (foundation -DO- 

RCC and steel door 

104 9.5 m. standard traction mast (fabricated "K" -DO- 0018-2 A 

series.) 

105 9.5 m. standard traction mast (fabricated "B" -DO- 0071 B 

series.) 

106 Typical side bearing foundation on banks. -DO- 0023/70 A 

107 Details of foundation for fencing upright ETI/C 0032 

108 Typical location and schematic connection ETI/PSI 003 

diagram for a three interrupter 

109 Typical general arrangement of three interrupter -DO- 004 

switching station 

110 Typical location plan and general arrangement -DO- 005 

for switching and paralleling station, 


for a feeding station 

112 Typical general arrangement of booster -DO- 011 

transformer station (without cross feeder) type-I 

113 Arrangement of mounting 25KV/230 V 10 KVA -DO- 036 

D


LT supply transformer. 


for switching and paralleling station. 

115 Employment schedule for witching and booster ETI/C 0185 

station main masts. 

116 Drilling schedule for S-1 mast -DO- 0030 



119 Drilling schedule for 8" x 6 " x 35f1 RSJ mast 8 -DO- 0036 

m. long booster transformer station. 


121 Drilling schedule for S-6 mast (length 12.4 m.) -DO- 

122 Drilling schedule for S-7 mast (length 11.4 m.) -DO- 0182 

123 Drilling schedule for S-8 mast ETI/C 0083 A 

124 Drilling schedule for S-9 mast (length 9.4 m.) -DO- 1084 A 

125 General arrangement and details of fencing -DO- 186 Sh.1 C 

panels and gates for switching stations. 

126 Detail of fencing upright and anti climbing -DO- 186 Sh.2 C 

device for switching station 

127 S - 100 fabricated mast for mounting LT supply -DO- 0043 A 

transformer and drop out fuse switch at switching 

station. 

128 S - 101 details of mast for supporting isolator -DO 0044 

inside switching station. 

129 Details of anchor beam for SP. SSP & FO -DO- 0033 C 

130 Details of small part steel for switching action. -DO- 0034 J 

Sh.1 

131 Typical fencing and anti climbing arrangement of ETI/PSI 104 E 

switching station. 

132 Typical earthing layout of sub-sectioning and -DO- 201 B 

paralleling station. 

133 Typical earthing layout of sectioning and -DO- 202 B 


134 Typical earthing lay out of feeding station. -DO- 203 B 

135 Earthing details for interrupter LT supply -DO- 204 B 

transformer 25 KV lighting arrestors PT type- 1 

(S-100 masts, S-101 masts, fencing upright and 

main masts). 

136 Typical earthing lay out of booster transformer -DO- 211 C 

stations (without cross feeder for Type - 1 & 2 

137 Typical cable run layout of a sub-sectioning and ETI/PSI 301 C 


138 Typical cable run layout of a sectioning and -DO- 302 


139 Typical cable run layout of a feeding station. -DO- 303 

140 Typical earthing lay out of booster transformer 

station (with 4 cross feeder) for Type -III, IV & 

V) 

-DO- 312


141 Typical drawing for terminal. -DO- 501 

142 36mm AL bus terminal. -DO- 6480 

143 36mm AL bus terminal splice. -DO- 6490 

144 36mm AL bus terminal tee connector. -DO- 6500 

145 36mm AL terminal tee connector. -DO- 6510 

146 36/15 tap connector. ETI/PSI/P 6520 

147 36 mm AL flexible bus price -DO- 6560 

148 36 mm AL bus flexible price-cum-tea-connector. -DO- 6560 

149 Typical no. plate for interrupter and double -DO- 7520 

isolator 

150 Typical no. plate for potential transformer type-1 -DO- 7521 

151 Typical no. plate for booster transformer -DO- 7522 

152 Details of braking for switching and booster ETI/C 0034 

transformer masts. 

153 Details of small parts steel of card rigger for 

switching stations and booster transformer 

station. 

Sh.2 

-DO- 0037 

154 Details of pre cost cable trench for switching ETI/C 0038 D 

155 Details of small parts steel for booster -DO- 0040 D 

transformer station. 

156 Standard "R" type total Rod laced general -DO- 0054 B 

arrangement. 

157 "G" type portal special up right and end piece. -DO- 0056 

158 Short bored pile foundation for traction mast -DO- 0062 A 

(permissible0BM and volume). 

159 Chart for portal foundation in dry black cotton 

soil safe bearing capacity 16500 Kg/m 2 -DO- 0062 B 

160 11 KV post insulator assembly ETI/OHE/P 0670-I 

161 Span and stagger chart for TW OHE ETI/OHE/C 04201 

162 Drilling schedule of OHE mast 9 m. and 8.5 m. 

long RSJ and BFB 

-DO- 04202 

Sh.1&2 

163 Schematic arrangement of TW OHE -DO- 04203 B 

164 Arrangement of bracket assembly for TW OHE -DO- 04204 B 

165 Hook bracket ETI/OHE/P 2380 B 

166 BFB steady arm assembly TW OHE -DO- 2540-1 

167 Anti wind clamp for TW OHE -DO- 2550-3 C 

168 Arrangement of anti-creep for TW OHE ETI/OHE/G 04206 A 

169 Arrangement of anti-creep for TW OHE -DO- 04206 A 

(alternative arrangement) 

170 Arrangement of section insulator for TW OHE -DO- 04207 B 

171 Small part steel for supporting section insulator -DO- 04207 A 

assembly 

Sh.2 

172 Standard termination of TW type OHE -DO- 04211 

(regulated) 

173 General arrangement at turn outs -DO- 04208 

174 Adjustment Chart -DO- 04209 

175 Counterweight assembly (eight) ETI/OHE/P 5090-3


176 Employment schedule for TW type regulated ETI/C 0704 

OHE without R.C and E.W. (W.P. 75 Kgf/m 2 ) 

177 Employment schedule for TW type regulated -DO- 0705 

OHE without R.C and E.W. 112.5 Kgf/m 2 

178 Bridle wire clamp (6mm) ETI/OHE/SK 516 

179 Schematic arrangement of un insulated overlap ETI/OHE/G 02121 

for composite OHE (Al Ally catenary & Copper 

contact wire) 

180 Schematic arrangement of insulated overlap for 

composite OHE (Al. Ally catenary & Copper 


Sh.3 

contact wire) 

181 General arrangement of regulated composite 

OHE at turnouts (overlap and crossed type). 

-DO- 02141 

Sh.2 

182 Stander terminations of OHE (Regulated & 

Unregulated). 

-DO- 02131 

Sh.2 

183 In span jumper connection between Aluminium -DO- 05101 

alloy catenary and copper contact wire. 

184 Continuity jumper connection at uninsulated 

overlap of composite OHE (Al. Alloy. catenary 

and copper contact wire.) 

Sh.2 

-DO- 05102 

Sh.2 

185 Connections at turnouts for composite OHE -DO- 05103 

Sh.2 

186 Potential equalizer connection at insulated ETI/OHE/G 05104 

overlap and neutral section for composite OHE 

Sh.2 

(Al. Alloy catenary & copper contact wire) 

187 Connection at diamond crossing -DO- 05106 

Sh.2 

188 General arrangement of connection composite -DO- 05124 

OHE by cross feeder (Spider) 

Sh.2 

189 General arrangement of connection to composite -DO- 05125 

OHE by cross feeder (Spider ) at switching 

Sh.2 

station or double track section 

B 

C 

B 

B 

190 General arrangement of connection at switching 

station on multiple track section (with composite 

OHE and spider cross feeder) 

191 Assembly of section insulator for composite 

OHE (Al. Alloy catenary & copper contact wire). 

-DO 05126 

Sh.2 

-DO- 05181 A 

Sh.2 

192 Bimetallic parallel groove clamp wire). ETI/OHE/SK 123 C 

193 Parallel grove clamp (18/14). -DO- 321 C 

194 Catenary dropper clip assembly with bimetallic -DO- 333 C 

washer 

195 Compensating plate ETI/OHE/S 5191- C 

1.2 

196 Aluminium catenary suspension clamp (MCI) ETI/OHE/S 176 D 

K 

197 Double catenary suspension clamp body (MCI) ETI/OHE/P 1171-1 A 

198 Double suspension lock plate (Galvanised MCI) ETI/OHE/S 205 B 

B


K 

199 Envelop type and fitting assy. -DO- 426 A 

200 Crimp type repair sleeve for A.A. stranded -DO- 285 B 

catenary wire 

201 Aluminium alloy catenary splice (cone type). ETI/OHE/S 134 D 

K 

202 Aluminum catenary suspension clamp assembly -DO- 468 

(MCI). 

203 Double suspension clamp assembly (MIC) for -DO- 469 A 

aluminum catenary 

204 Span and stagger chart for complete OHE -D0- 375 A 

205 Employment schedule for cantilever masts ETI/C 0703 

regulated OHE (A1. catenary and Cu. Contact 

Sh.1 

wire) without return conductor and without earth 

wire (wind pressure 75 Kgf/m2). 

206 Employment schedule for cantilever masts ETI/C 0703Sh2 




207 Employment schedule for cantilever masts ETI/C 0703Sh2 








ETI/OHE/S 

K 

0703 

Sh.1 

209 Employment schedule for OHE (9.5M) WP112.5 

Kgf/m2 composite OHE (1000+1000) 

-DO- 0717 

Sh.1 

210 Employment schedule for OHE mast (9.5m)WP -DO- 0717 

Sh.1 

112.5 Kgf/m2 composite OHE 

(1000+1000)+RCEW 

211 Employment schedule for OHE mast (9.5M) 

WP112.5 Kgf/m2 composite OHE 

(1000+1000)+RC. 


WP112.5 Kgf/m2 composite OHE 

(1000+1000)+EW+RC. 


overlap anchor with 3.0 meter implantation 

WP112.5 Kgf/m2 composite OHE (1000+1000) 







-DO- 0717 

Sh.3 

-DO- 0717 

Sh.3 

ETI/C 0718 

-DO- 0719 

-DO- 0720


216 Employment schedule for regulated OHE mast 

(9.5M) wind 75 Kgf/m2 composite OHE 

1. -do- OHE only 

2. -do- OHE +EW 

3. -do- OHE +RC. 

4. -do- OHE =ew+rc. 

217 Employment schedule for regulated OHE mast 

(9.5M) wind 75 Kgf/m2 composite OHE with 

extra setting distance. 

5 -do- overlap anchor location. 

6 -do- central location. 

ETI/C0721 

-do- 

-do- 

-do- 

ETI/C/0722 

ETI/C/0723 

ETI/C/0724 

Sh. 1/4 

2/4 

3/4 

4/4 

7 -do- inter location 

The drawing can be seen to the office of purchaser and will be available for sale 

(B) LIST OF STANDERD SPECIFICATION 

S. No. Tile of specification Specification No. 

1 Annealed stranded copper conductor for jumper 

wire 

2 Copper bus bar RE/30/OHE/5(11/60) 

3 Steel Tuber ET/OHE/11(5/89). 

4 Hot dip galvanization of steel masts (rolled and 

fabricated tubes and fittings used on 25 KV AC 

OHE. 

- 

- 

- 

- 

ETI/OHE/3 (2/94), 

AMEND. NO. 1(4/95). 

ETI/OHE/13 (4/84) WITH 

A&C SLIP NO.1 OF 5/86. 

2 OF 4/90 AND 3/ OF 4/90. 

5 Stainless steel wire ropes ETI/OHE/14(9/94) 

6 25 KV single and double pole isolators. ETI /OHE/16(1/94) 

7 Bolts, nuts and washers. ETI/OHE/18(4/84) WITH 

A&C SLIP NO. 1 OF NOV. 

1984. 

8 Aluminum alloy section and tube ETI/OHE.21 (9/74) 

9 Standard for drawings for traction overhead RE/OHE/25 (3/66) 

equipment 

10 Section Insulators ETI/OHE/27 (8/84) WITH 

A&C SLIP NO. 1 OF 10/92 

11 Double wore section insulators RE/OHE/26 (NEW) 

12 Enamelled steel plate ETI/OHE/33(NEW) 

DRAFT. 

13 Galvanized steel wire ETI/OHE/36(12/92) 

14 Copper trolley contact wire for AC & DC electric ETI/OHE/42(11/92_ 

traction. 

15 Fitting for 25 KV, 50 HZ AC overhead traction 

equipment 

ETI/OHE/49(5/84)WITH 

A&C SLIIP NO 1 OF 

16 Cadmium copper conductor for overhead railway 

traction. 

SEPT. OF 1085. 

ETI/OHE/50(8/83) WITH 

A&C SLIP NO 1 OCT, 

1983. 

17 7.5 KV line type lightning arrestor. ETI/PS/13(3/75) 

18 25 KV AC Booster Transformer. ETI/PSI/13/(3/85) 

19 25kv drop out fuse switch ETI/PSI/14 (1/86)


20 25 KV/240 volt 10 KVA LT transformer ETI/PSI/15(10/73) WITH A 

&C SLIP NO 1 OF 7/76 

NO 2 OF 3/81 

21 Aluminum alloy stranded catenary wire 19/2. 79 ETI/OHE/54(2/85). 

mm 

22 Standard code of practice painting of rolled steel ETI/C/1(1/80 

electrification ( not to be used) 

23 Aluminum alloy grooved contact wire 16 4mm dia ETI/EL/OHE/101(8/83) 

193.190mm cross section. 

24 110 colt,40 AH lead acid batteries. ETI/PSI/21/(6/81) WITH 

A&C SLIP NO 1 OF 7/81


PART -V 

OFFER LETTER 

FORM -1 

From : 

To; 

The President of India, 

Acting through the Dy. Chief Electrical Engineer (CON), 

Or his successor, 

Office of the Dy. Chief Electrical Engineer (CON), 

East Central Rly Mahendrughat. 

Dear Sir, 

Sub:- Design, Drawing, Supply, Erection, testing and commissioning and shifting of 

portals and Auxiliary Transformer and provision of insulated catenary near level crossing 

No.1 at Mithapur Goomti at Patna Jn. 

1. 1/We, the undersigned hereby offer to execute the above work within a period of 120 days 

from the date to issue of letter of intent/letter of acceptance of tender and in strict compliance with 

the provisions detailed in the tender papers appended here to including instructions to tenderers and 

conditions of tendering, conditions of contract and specifications as included therein and as modified 

by this tender at such rates as are specified in schedule of this Tender enclosed within a sealed 

cover. 

2. I/we agree that this/these tender's shall not be restricted or withdrawn and shall remain open 

for acceptance for and during the period of 6 months from the date fixed for opening the same and 

will continue to be open even beyond the period of 6 months till withdrawn or rejected or accepted as 

the case may be. 

3. I/we fully understand the terms, conditions and other provisions as contained in the tender 

papers and 1/we agree that same shall apply to my/our tender's as modified by my/our tender's and 

1/we shall be bound by them. 

4. (a)1/we have deposited with the Chief Cashier. East Central Rly,……………….. the 

required the earnest money of Rs.................... in respect of this .......................................... 

receipt no.......................... dated......................... has been granted. 

(b) DD No……………… in F/O FA & CAO/CON/Mahendrughat, Patna for 

Rs………………………………………………………………………….issued 

by 

…………………………………….dt……………….


The full value of earnest money shall stand forfeited without prejudice to other 

rights and remedies if : 

(a) 1/we do not execute the contract documents within 21 days of receipt of notice by the railways 

that such documents are ready of. 

(b) 1/we do not commence work within 10 days of receipt of the instructions of that effect. 

5. I/we enclose the Income Tax Clearance certificate in the prescribe form or a declaration to that 

effect as required under Para- 1.1.6. of the tender papers pertaining to me/us for the year. 

6 .I/we have no retired engineer of retired gazetted officer of the engineering department of any of 

the railway's owned and administered by the President of India. 

OR 

The list of retired engineered Gazetted officer who are associated with me / us, is included as 

an enclosure to this offer letter. 

Seal of the Tenderer 

Yours faithfully, 

Place 

Date : 

Witnessed by 

Signature of the Tenderer 

1 Signature 

Name (Name in Block Letters) 

Address 

2. Signature 

Name (Name in Block Letters) 

Address 

End of document

PNBE _TRD_ 86 (PDF) - Indian Railways

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