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3.1 DESIGN i) Standards to be followed: All designs shall be prepared on CAD following General Signalling principles and North Central Railway practices. ii) The application data, Interface diagrams of the existing EIs, circuit diagrams of existing interlocking will be made available by the Railways. iii) The contractor should have at least 2 levels of internal check, production check and Independent check followed by review of design at Design manager’s level before submitting design for IRPMU’s approval. iv) All the designs – application data and Interface diagrams of EIs, circuit alterations of existing interlocking – will be approved by IRPMU. The onus of delivering safe design will, however be of the contractor. IRPMU’s role will be limited to ‘in principle’ approval only. v) If any design deficiency is noted at any stage before and after commissioning (within warranty period) due to any reason whatsoever, the contractor will arrange to correct/alter the changes, install, Test (FAT & SAT) and commission the changes free of cost. vii) The above guidelines would be applicable while designing application data and database design for VDU at stations. 3.2 INSTALLATION TESTING & COMMISIONING 3.2.1 INTERCONNECTION/WIRING Wiring of relay racks shall be carried out as per Interface diagram prepared by the contractor and approved by the Railways. Interconnection between terminal racks / boards and relay racks shall be carried out by providing ladder arrangements/using existing ladder arrangement or by any other arrangements as instructed by Railway representative. It shall be possible to identify wires to all terminals by means of non- metal tag corresponding to the circuit and wiring plan. Contractor may adopt any other means subject to approval of the Railways. Tag shall be applied in such a manner that if a wire is removed from the terminal, the tag will remain on the wire. Where practicable the tags or labels shall be securely fastened adjacent to the terminals or suitably painted so that the number can be easily read. Contact numbering for the relays shall be made by the contractor as per the circuit diagram approved by the railway and type of relay proposed to be used on the installation. No joints are permitted in the connection wires. Signature of contractor Page 16 of 104 Dy CSTE/Proj/IRPMU/CNB
Wiring in relays housing shall be uniform for like apparatus through out the installation. Wiring inside rack for relays plug in type (Metal to Carbon) shall be done with " PVC insulated unsheathed flame retarding type single core flexible wire1100V grade having l6/0.2mm annealed copper conductor and nominal cross sectional area of 0.5 Sq. mm of common colour code to the specification IS: 694".For wiring these relays the above wires shall be terminated on eyelet /lugs of standard design. After testing, the loose wires on the cable ladder shall be neatly bunched and laced with twin black. The contractor shall adopt suitable colour code for wiring as required by the Engineer in-charge. Spare conductors to an extent of 10% are to be provided on the interconnecting wire runs for future developments in case of multi-core cable are used. After the complete testing by the Engineer in-charge and before commissioning the installation, the contractor shall arrange necessary sealing leads and wires for sealing the relays. The nomenclature of each relay shall be painted both in front and rear side of each relay with contact configuration. The relay index sheet duly painted of details of relay and their position in the relay rack shall be manufactured out of Decolum /Nova pan sheet and fixed in the relay room. All the relays to be plugged shall be checked visually and defect if any, noticed shall be replaced, duly reporting the same to the Railways. As made relay rack wiring and contact chart of all relays shall be prepared in linen/polyester sheets, duly signed and handed over to Railways for preparation of handing -over documents to maintenance organisation. Suitable arrangements shall be made in the relay rack for fixing condenser and resistance unit, required for slow to release feature. Letter painting shall be made against each unit to identify circuit for which it is used. 3.2.2 Testing and commissioning consists of final testing of selection circuits, testing of cables, testing of track circuits, points, signals as per SEM, and final commissioning of the entire signalling arrangements for traffic use. All the alterations for improving safety shall be carried out before commissioning as required by the Railways. The contractor shall first test the equipment at his own level, followed by testing done jointly with Railways. Testing charges will be borne by the contractor. The contractor shall provide test panel for testing at his own cost. The different stages and procedures for testing of indoor under outdoor equipment are given below as guidance. Stage I: Testing of the interlocking - Wire to wire bell-test of all sheets before soldering and after soldering/wire count test. - Plugging of all relays as per contact configuration. Stage II: Testing of the outdoor gears. Stage III: Commissioning of system by connecting the outdoor gears to the panel. Signature of contractor Page 17 of 104 Dy CSTE/Proj/IRPMU/CNB
Page 1 and 2: IRPMU INDIAN RAILWAYS PROJECT MANAG
Page 3 and 4: INDEX SECTION CHAPTER SUBJECT I 1 T
Page 5 and 6: INDIAN RAILWAY PROJECT MANAGEMENT U
Page 7 and 8: PREAMBLE 1 Tender Notice No. IRPMU/
Page 9 and 10: j. The Earth enhancement material s
Page 11 and 12: B) Typical bonding and Earthing con
Page 13 and 14: 2.3.2 Sch. B Design Modification of
Page 15: assembly, guide element, female con
Page 19 and 20: 4.3 a) The tenderer(s) should submi
Page 21 and 22: these originally quoted for, based
Page 23 and 24: Section - I Chapter - 3 Schedule of
Page 25 and 26: Schedule -B Schedule for Alteration
Page 27 and 28: SCHEDULE -C Schedule for Supply of
Page 29 and 30: Section - II Chapter - 1 Instructio
Page 31 and 32: 23. AUTHORITY FOR ACCEPTANCE 24. PU
Page 33 and 34: "CONTRACTOR” Means the successful
Page 35 and 36: change of price, or time schedule o
Page 37 and 38: within reasonable time after the fi
Page 39 and 40: 7.1 Any individual(s) signing the t
Page 41 and 42: entertained. 16. WRONG INFORMATION
Page 43 and 44: 18.2.3 COMPLETION PERIOD OF WORK Th
Page 45 and 46: derived from the multiplication of
Page 47 and 48: Section - II Chapter - 2 Special Co
Page 49 and 50: 20. ADDITION/REDUCTION OF WORK 21.
Page 51 and 52: SPECIAL CONDITIONS OF CONTRACT 1. T
Page 53 and 54: irrevocable bank Guarantee (issued
Page 55 and 56: 6.6 No facility whatsoever, e.g. pr
Page 57 and 58: 9 MATERIAL SUPPLIED BY CONTRACTOR 9
Page 59 and 60: 15.1 The tenderer shall certify tha
Page 61 and 62: and cost of the contractor. In the
Page 63 and 64: During inspection of installation b
Page 65 and 66: All the work shall be executed in s
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approved test procedure have been c
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29.3 During the period of Warranty,
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the reimbursement in full or in par
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If such a failure as aforesaid shal
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Banker's charges for guarantees, co
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On expiry of the maintenance and wa
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material supplied by the Contractor
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(a) The Arbitration proceedings sha
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48.3(b)(iii) A party may apply to t
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FORM No. 1 : FORM No. 2 : FORM No.
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Until a formal agreement is prepare
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Signed and delivered at ………
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4. We .............................
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FORM-6 Para-8.2/Section II Chapter
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ACKNOWLEDGEMENT (FOR RECEIVING MATE
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FORM-12 Para-36/Section II Chapter
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FORM-14 RECEIPT CERTIFICATE (FOR SU
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Section - III Chapter - 1 Technical
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aspect until the line is clear upto
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