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2.3.2 Sch. B Design
Modification of existing design/software, application Logic, interface diagrams, existing relay
room circuit diagrams, LCP (VDU) diagram of stations as per approved SIP and selection table
approved by railways and as per guidelines given in ‘Section III Chapter I – Technical and
Operation guidelines’.
i) Submissions for approval as per procedure below:
a) All the above tentative drawings (Red and Green copies) in 2 sets will be submitted at
IRPMU HQs for approval.
b) IRPMU will return one copy after correction and retain one copy for their records.
c) After correction, the contractor will issue 2 sets of corrected Red and Green copy of
only affected sheets.
d) Steps 2 & 3 will repeat till the drawings are approved by IRPMU/HQs.
e) After the drawings are approved, the final Red & Green copy and a Master copy
prepared from red copy will be signed at IRPMU/HQs.
ii) Distribution of approved copies
a) The Master copy of Application Logic, Interface diagram, existing relay room circuit
diagrams, VDU diagrams etc. will be submitted in IRPMU/HQs.
b) The true copy of ‘Red and Green copy’ Interface diagrams, existing relay room circuits
will be prepared as under:
- One copy for IRPMU Field staff.
- One copy for contractor’s field staff for wiring marked ‘Construction copy’.
c) Copies will be prepared out of Master copy of Interface diagrams, existing relay room
circuit diagrams and sent one each to Dy CSTE/IRPMU (Field) and to Contractor’s
field representative marked ‘Testing copy’.
iii) The Testing copy will be signed by IRPMU and Contractor’s representative after
carrying out the Bell test, before and after commissioning. It will be handed over by the
contractor in Dy CSTE/IRPMU (Field) office.
Note:- If tenderer is not OEM than tenderer has to submit MOU with OEM for doing
alteration in Electronic interlocking. Non submission of MOU with OEM will led
to cancellation of offer.
2.3.3 Sch-B: Installation, wiring, testing and commissioning of alterations
i) Indoor Installation at Station will involve
a) Fixing of relays, phoenix terminals, fuses etc. in the relay room and wiring from phoenix
twin terminals to relays and relays to CT rack etc.
b) Installation and wiring of I/O cards with all accessories (wherever required). Wiring will
include wiring from MLK/Westrace to twin terminals.
c) Fixing and wiring of rotary switches in ASM room for changing to modified auto block
signalling during Foggy weather if required by railways.
d) Software loading in Electronic interlocking and VDU
e) Alterations in operating cum indication panel with contractors own material.
Signature of contractor Page 13 of 104 Dy CSTE/Proj/IRPMU/CNB