TEMPORARY SINGLE LINE WORKING ON DOUBLE LINE (TSL) SR 6.02-1
1. Where an accident to a train or track or other obstructions takes place on a double line, one of line cannot be used, then the traffic may temporarily worked on single line, which is called TSL working. The traffic may work under any one of the following system. a. By obtaining line clear on electrical speaking instrument. b. By the installation of single line block instruments and SLB demarcate the block section in the wrong direction if the affected line is likely to remain out of use for a substantial period.
2. On receipt of reliable information in writing that one line is clear the SM in consultation with SCOR and the SM of the station at the other end of the section shall take steps to introduce TSL working.
3. In case of doubt, track safe certificate shall be obtained by the engineering official not less than the rank of an inspector/SSE.
4. TSL working shall be introduced between the nearest station provided with cross over between UP and DN lines.
5. IBS and ‘C’ class stations shall be kept closed and the commutator of the concerned block instruments shall be locked in ‘TOL’ position. Caution indicator shall be hung on the handle of block instrument in case of Daido instruments.
6. SM proposing TSL working shall issue a message to the SM at the other end of affected section containing the following information under exchange of private numbers.
a. Cause of introduction of TSL working.
b. The line on which the TSL working is proposed.
c. Source of information that the said line is clear. d. Place of obstruction with kilometer number.
e. Names of intermediate station, if any, which would be out of use.
f. Assurance that the trap points, if any, have been spiked or clamped and padlocked.
g. Assurance that if the train is running on the right line the Last Stop Signal shall be kept in ON position. In case the train is running on the wrong line all fixed signals shall be kept in the ON position and
h. The number and timing of the last train which arrived or left the block station issuing the message.
7. After exchanging of the above information line clear shall be obtained through the means of communication.
8. Authority :-
a. Right line – T/D 602
b. Wrong line – T/D 602 and T/511 if required or pilot out memo. The train shall be pilot out up to the last point.
9. Three parts of T/D 602 are as under:-
a. Line clear ticket
b. Authority to pass signals at ON position
c. Caution order in which the following are mentioned.
I. Line on which the train is going
II. Place of obstruction
III. Speed of the first train shall be 25 KMPH subject to observance of other speed restrictions in force
V. Warning to observe neutral section for the train going on wrong line in electrified section and clamping/spiking of trap points if any
V. In case of last stop signal hand signal shall also be exhibited after giving the authority.
Note: T/A 1425 and T/B 1425 Authority must be filled by both sides SM during TSL.
10. Loco pilot of the first train shall inform all gateman and gang men on the way about the introduction of TSL working specifying line on which the trains will run.
11. The loco pilot of the train proceeding on the wrong line shall switch-on the flasher light and sound frequently short whistles. If the flasher light is not found ON, the station staff/gatemen/gang men shall stop the train.
12. Second and subsequent trains may run at their booked speed subject to observance of other speed restrictions in force.
13. When the train is stopped in the block section on accounts accident, failure, and obstruction or for any other exceptional cause and the loco pilot finds that he cannot proceed, it shall be protected as per GR 6.03.
RECEPTION OF TRAIN AT NEXT STATION
14. Trains proceeding on the wrong line shall stop opposite to the First Stop Signal of the right line or at the Last Stop Signal of the wrong line whichever comes first. The SM after ensuring that the points are set, clamped and pad locked shall depute a railway servant with a written authority to stop the train with danger hand signal and there after pilot the train into the station.
15. Trains proceeding on the right line shall be received by taking ‘OFF’ the approach stop signal.
16. If the loco pilot finds that no railway servant in uniform has been deputed to pilot the train then GR-4.44 shall be followed.
17. After the ensuring that the whole of the train has arrived completely with tail lamp/tail board the SM shall clear the section by giving private the number on telephone.
RESUMPTION OF NORMAL WORKING
a. On receipt of a written certificate from a responsible engineering official that obstructed line/ track is free and safe for the passage of trains, SM shall issue a message to the other station/stations under exchange of private number and in consultation with the SCOR normal working shall be resumed.
b. Block instruments and all fixed signals including those of IBH which were treated as closed shall be brought into use immediately.
c. An entry shall also be made in the TSR of all stations concerned showing the time of suspension of double line working and resumption of normal working.
d. Loco pilot of the first train entering the section after resumption of normal working shall inform all gateman and gang men on the way about the resumption of normal working.
18. All the records in connection with the TSL working shall be retained at the station and the TI of the section must scrutinize and submit his report to the DRM within 7 days of the resumption of normal working.
