Section 10: Special Working Flashcards
(85 cards)
Manual block working
a method of manually preventing rail traffic entries into occupied blocks
Manual block working must be used if
it is specified in other network rules, a train has been advertised as a block train, rail traffic does not reliably operate track-circuits, the NCO needs to block rail traffic or the signalling system is not or might not be operating correctly
The NCO or HandNetwork Control officers controlling entry to a block must not
authorise rail traffic to enter the block before the block is clear
Blockposts may be used to divide
a pilot staff section into blocks or a block under “manual block working” into smaller blocks
Block posts allow
more frequent following movements and are established at designated locations
If a signal box is used as the block post location, the Proceed Authority will be given:
in the right running direction, by fixed signals where they are available, or where they are not available, by the Qualified worker standing at the block post OR in the wrong running direction by the Qualified Working standing at the block post
Basic block working may be used on
unidirectional and bidirectional lines in RVD territory or Block Telegraph territory, but may be used only for movements normally allowed by those systems of safeworking
Condition affecting the Network block working (CAN block working)
manual block working using a CAN form to warn train crew about the working. May be used only for right running direction movements on unidirectional lines
The authority to enter and occupy a block under “Manual block working” is
clearing of the signal allowing entry, the authority of a handNetwork Control Officer at a block post or passing a signal at STOP in accordance with Rule 608
The limits for basic block working extend from a controlled signal to
Another controlled signal, a nominated location
After rail traffic enters the basic block working limits, NCOs must
set the entry end signal at stop with blocking facilities applied and Maintain the blocking facilities until rail traffic has passed completely beyond the nominated location
A limit for CAN block working may be
a working controlled signal or an affected automatic signal with a HandNetwork Controll officer in position
Clearance HandNetwork Control Officers are expected to
go to the specified location and Make sure they stand in a safe place, have a clear view of approaching and departing rail traffic and have effective communication with the NCO, the PO and the HandNCO at an adjoining block post
Unless train crew are instructed otherwise, signals detailed in a “CAN form” may be passed at STOP:
without further authorisation and at normal speed
Before authorising establishment or removal or a block post, the Train Controller must be assured that
the line is not occupied between the limits of CAN block working and Rail traffic will not be authorised to enter the portion of line being used for CAN block working before the block post has been established or removed
Block posts must not be located so that rail traffic
stands on a level crossing or stand on the controlling track-circuits of an automatic level crossing
If practicable, warming signs must be placed 500m before
a block post or if it is an automatic signal, the exit end limit
If an automatic signal is used as the exit end limit, the HandNetwork Control officer at the exit end limit must stop all traffic and tell the train crew
that the exit end limit has been reached and to obey the next signal
Before authorising rail traffic to enter the CAN block working limits, NCOs must arrange to issue drivers with a CAN form including
CAN block working limits, details of block posts, locations of warning signs, Identification details of signals that may be passed at stop without further autherisation and whether train stops have been suppressed
The CAN form for the first rail traffic to enter the CAN block working limits may include instructions to the locomotive driver to
if necessary, check and set points and if necessary clip and lock facing points
Before ending CAN block working, the Train Controller must be assered that
it is safe to do so and block posts and HandNCOs have been removed
A Special Proceed Authority must
specify the limits for the movements that it authorises and specify the line to be used, but not specify routes within yard limits of attended locations and remotely controlled locations
A Special Proceed Authority may
include more than one section within its limits and/or allow removal of a train in portions from a section
In respect to SPAs, NCOs must
not authorise conflicting occupancies or routes and makes sure that planned movements are safe