Total Interruption
of Communication on Single Line {6.02(ii)}
When all the authorized means of
communication has failed and Line Clear could not be obtained through any one
of the following means of communications, Total Interruption of Communications
is said to prevail between the two block stations.
a)
Block
Instruments/Track circuits/Axle counters.
b)
Telephone
attached to Block Instruments
c)
Station
to Station fixed telephones
d)
Fixed
telephones like Rly Auto phones and BSNL phones
e)
Control
Telephones &
f)
VHF
sets not as sole means of communication in sections where passenger trains run.
SM shall
call GDR and brief them about the situation and communication to be established
with the SM at the other end of the block section by sending any of the
following in the order of preference.
i.
Light Engine
ii.
Train Engine after detaching from the waiting train.
iii. Motor trolley /Tower
wagon
iv. Trolley/Moped
trolley
v. EMU train/RMC after
detraining the passengers.SM shall
prepare Form T/B 602 and issue to LP under acknowledgement.
It contains:
·
An
Authority To Proceed without Line Clear.
·
Authority
to pass dispatch signals at ON.
·
Caution
Order restricting speed to 15 kmph by day and view ahead clear 10 kmph by night
and view ahead not clear & walking speed during impaired visibility such as thick or foggy
weather.
·
Line
Clear Enquiry Message
·
Conditional
Line Clear Message
Ø The LP running with
the authority T/B 602 shall switch on the flasher light and be vigilant and
cautious and frequently use the engine whistle.
Ø The LP shall not
exceed the speed of 15/10kmph (Day/Night), or
Ø Walking speed during
thick or foggy weather two men to walk in advance at an adequate distance and
pilot the train carrying Hand danger signals and Detonators.
Ø Before entering
tunnel, ensure it is free from any obstruction and head lights, side lights,
tail lights should be lit,
Ø No obstruction on
the line beyond outermost facing points shall be permitted by the SM until the
engine returns.
Ø In case of two
engines or any other vehicles meeting in mid section, LPs to decide to which
station to proceed considering the importance of waiting train, distance,
gradient and presence of catch siding etc.
Ø After deciding which
direction to proceed they may couple up if possible or follow at an adequate
distance.
Ø On arrival SM shall
cancel the T/B 602 issued by him.
Ø The Engine sent to
open communication on approaching the station in advance shall stop at the FSS
of the station and give a long whistle to apprise the SM.
Ø Even after waiting
for 10 mins there is no response from the SM the LP shall depute his ALP to the
station to inform the SM.
Ø SM on becoming aware
may receive the train on signals.
Ø LP to handover from
T/ B 602 to SM.
Ø SM shall issue
Conditional Line Clear reply granting line clear with PN in form T/ F 602.
Ø CLCT T/G 602 for up
direction and T/H 602 for down direction to be given for the engine to return
with or without train attached.
Ø In case of trolley,
it can be loaded in the train
Ø While returning the
Engine / train shall run at booked speed.
Ø LP to stop at foot
of the FSS of sending station.
Ø SM has to arrange
reception by taking off signals.
Ø On arrival LP to
hand over conditional line clear reply message to SM.
Ø Waiting train shall
be started on CLCT and it can run at booked speed.
Ø In case of even flow
of trains, for every succeeding train, Further Enquiry and Reply shall be sent
through guard of the preceding train.
Ø In case of uneven
flow of trains, Line Clear shall be obtained through first engine or trolley in
form T/E 602.
Ø In this case, second
and subsequent trains to be started at a clear interval of 30mins.
Ø Speed of the first
train-Booked speed
Ø Subsequent trains
-25/10 kmph - view clear/ not clear.
Ø The particulars of
train which has preceded and the train which will be following shall be
indicated in the CLCT.
Ø If a train is unable
to proceed further due to any accident / failure / obstruction, Guard to check
up Tail board/ Tail lamp.
Ø Place one detonator
at 250 mts on the way out and two detonators 10 mts apart at 500 mts from
train.
Ø When trains follow
one another, normally no train shall be backed.
Ø If unavoidable, it
can be backed, after arranging protection from the place up to where it has to
be backed.
Ø This procedure to be
followed until anyone of the means of communications is restored.
Ø If any authorised
means of communications is restored by the competent authority and after
ascertaining that the block section is clear, the restoration message should be
duly exchanged in form T/I 602 by both the Station Masters before resuming
normal working.
Ø TI shall scrutinize
records and submit a report to DRM within 7 days of occurrence.
