All Communication Failure on Single line (SR 6.02 – 4)
1. In the event of total interruption of communication (TIC) occurring between two stations on a single line section, i.e. when Line Clear cannot be obtained by any one of the following means stated in order of preference viz:
a. Block instruments; Track circuits or Axle counters;
b. Telephones attached to the Block Instruments;
c. Station to station fixed telephones wherever available;
d. Fixed telephone such as Railway auto phones & BSNL / MTNL phones;
e. Control Telephone;
f. VHF sets under special instructions, but not as the sole means of communication on sections where passenger trains run.
The following procedure shall be adopted for train passing.
2. The SM who has a train to dispatch through the affected block section shall open communications by establishing contact with the SM of the block station at the other end by sending an engine or self propelled vehicle or any other vehicle as under in the order of preference viz:
(i) Light engine;
(ii) Train engine;
(iii) Motor trolley / Tower wagon accompanied by a Guard or SM;
(iv) Trolley / Cycle Trolley / Moped Trolley accompanied by a Guard or SM;
(v) Diesel car / Rail motor car / EMU rake after ensuring that all passengers have detrained.
3. The SM on duty shall advise the circumstances and the purpose of the staff being sent with the above engine / vehicle into the affected block section to open the communication. He must also satisfy himself that the staff thoroughly understand the rules of working of trains during TIC on single line, and obtain their signature on the authority in token of acknowledgement.
4. T/B 602 is issued to the Loco Pilot of the vehicle going to open the communication after explaining the situation. It has the following five parts:
a) Authority to proceed without line clear,
b) Authority to pass LSS at ON,
c) Caution order – 15 /10 /walking pace,
d) Line clear enquiry message,
e) Conditional line clear message.
5. Duties of Loco Pilot and Guard:
a) Loco Pilot shall go through the authority and ensures the correctness of the entries,
b) Loco Pilot shall proceed putting on the flasher light,
c) Loco Pilot shall observe the speed restriction in force,
d) Loco Pilot shall sound frequently short whistles,
e) Loco Pilot shall stop at an adequate distance if any vehicle is seen coming from the opposite direction and proceed after consultation with the Loco Pilot of the vehicle regarding the importance of the train, distance covered, gradients, catch siding etc.
f) Loco Pilot shall stop at the FSS and sound continuous long whistle to attract the attention of SM.
6. On hearing the whistle, SM gets the points set and facing points locked and receives the train by taking ‘Off’ the signals and collect T/B 602 and make proper entry in TSR.
7. The following authorities are issued to the Loco Pilot of the returning vehicle –
a) T/G 602 or T/H 602 based on the conditional line clear message of T/B 602,
b) T/369 (3b) to pass the signals at ON,
c) T/409 or T/A 409 to observe the speed restrictions in force,
d) T/F 602 – reply to line clear enquiry message,
e) T/E 602 – if required to ask line clear.
8. While returning, the Loco Pilot of the vehicle proceed at normal speed, and SM will receive the train by taking ‘Off’ signals and obtain T/F 602 and T/E 602.
9. SM issues the following authorities to the waiting train before dispatching –
a) T/G 602 or T/H 602 based on T/F 602.
b) T/369(3b) to pass signals at ON.
c) T/409 or T/A 409 to observe speed restrictions in force.
d) T/F 602 – if T/E 602 is received.
e) T/E 602 – if required to ask line clear.
Note: When the number of trains is same at both stations, SM shall issue T/E 602 and T/F 602 to Loco Pilot / Guard of each train.
10. When more than one train is waiting for line clear, T/E 602 is filled with details of all the trains.
11. If the other SM is in a position to receive all the trains, he shall give separate private number to all the trains and fill the details in T/F 602.
12. Under such circumstances, trains are dispatched at an interval of 30 minutes issuing the following authorities –
a) T/G 602 or T/H 602,
c) T/409 – speed 25 /10 kmph.
13. On availability of any one of the means of communication, both SMs ensure that the section is clear and exchange private numbers and fill T/I 602.
14. Details of the movement are entered in TSR which are examined by TI and a report will be sent to DRM within seven days.