Page 218 - IRSEM_Main Book

Section 2: Obtaining Sanction for Works on Lines Opened to
Traffic

9.2.1 Works Requiring Notice to and Sanction of the Commissioner of Railway
Safety

Under Section 20 of the Indian Railways Act and Chapter VI, VII of the "Rules
for the Opening of a Railway or Section of a Railway for public Carriage of
Passengers" the approval of Commissioner of Railway Safety is required for the
execution of any work on the open line which will affect running of passenger
trains and any temporary arrangement necessary, for carrying it out, except in
cases of emergency.

The following signal and interlocking works, when they are connected with or
form part of a Railway already opened for carriage of passengers require the
sanction of Commissioner of Railway Safety, before they are commenced or
opened:

(a) Additions/extensions or alterations to existing Block, Signalling and interlocking
installations.

(b) Change in block, Signalling and Interlocking scheme.

(c) New stations temporary or permanent.

(d) Interlocking of level crossing, catch siding and slip sidings etc.

(e) Closing of Manned Level Crossing gates after approval of district
administration obtained by Engineering department.

9.2.2 The following works shall, which enhance level of safety, however, do not
require the sanction of the Commissioner of Railway Safety:

(a) Provision of Telephones at already manned level crossings.

(b) Provision of electrical & mechanical lifting barrier including emergency
interlocking arrangements, sliding boom at already interlocked Level Crossing
Gates.

(c) Interlocking of existing LC Gates within already existing interlocked station
yard by existing signals in the same or shifted location.

(d) Provision of all categories of track circuits, axle counters including dual
detection.

(e) Replacement/Modification of signalling assets without any change in the
yard layout or signal interlocking scheme either in station or at mid section
Level Crossing Gates.

(f) Replacement of Block instruments by any other approved type of instrument
or provision of block proving through Axle counters or Track Circuiting using
existing Block instruments.

Chapter 9: Procedure for Commissioning of Signalling Installations Page 185 of 535