Page 309 - IRSEM_Main Book

12.25.8 Overhauling of Station Master's Slide Control Frame

(a) Station Master's Slide Control Frames shall be overhauled under the
personal supervision of the SSE/JE (Signal)/incharge.

(b) Instructions for working of Traffic during overhauling as laid down in para
12.25.4 shall be applicable during overhauling of Station Master's Slide
Control Frames.

(c) The Supervisory SSE/JE (Signal)/incharge shall issue disconnection
memo on Form S&T/DN Annexure-3-A10 to the Station Master on duty
and his signature obtained before starting and reconnection memo issued
after completion of overhauling work. The following precautions should
also be taken by SM on duty to ensure the safety of the train movements.

(i) The Cabin man on duty should be instructed to see that no signals are
taken 'OFF' by him/her unless permitted by the Station Master on duty.

(ii) It should be ensured that no electric slot or key is transmitted in an
unauthorised manner and that no conflicting slot or key is transmitted.

12.25.9 Certificate of Overhauling

(a) Locking overhauling certificates on Form S&T/LO Annexure-12-A2 for all
interlocking frames, interlocking key boxes and Station Master's slide
control frames shall be promptly submitted by the SSE/JE (Signal) to the
Sr.DSTE/DSTE, in duplicate. The Sr.DSTE/DSTE shall, after necessary
scrutiny forward a consolidated statement of the overhauling carried out
every quarter along with one copy of the Certificate to the PCSTE for his
record.

Section 26: Testing of Interlocking Frames, Interlocking Key
Boxes and Station Master's Slide Control Frames

12.26.1 Periodicity

(a) Locking of interlocking frames, interlocking key boxes and Station Master's
slide control frames shall be tested once in a year or earlier if required.

(b) Locking shall also be tested before opening a new installation, after every
addition and alteration and immediately after overhauling.

12.26.2 Programme of Testing

(a) The testing of interlocking frames, interlocking key boxes and Station
Master's slide control frames shall be done in a programmed basis on the
same lines as laid down in Section '25' for overhauling. The testing
programme shall be arranged as follows:

(b) First at the time of overhauling, second a year later and third 2 years after
overhauling. At the end of the third year, a test should be carried out
separately only if overhauling is not proposed to be done within two
months of the date on which periodical testing is due.

Chapter 12: Installation, Testing & Maintenance of Mechanical Signalling Equipment Page 263 of 535