NR - NB 134 ISSUE 5
Transpositions on DC Track Circuits
active, Most Current
| Organization: | NR |
| Publication Date: | 24 May 2021 |
| Status: | active |
| Page Count: | 3 |
scope:
Applies to all single rail DC track circuits on non electrified lines [on electrified lines it is likely that the need for continuous
traction return would not cause the circumstances of this Notice Board to have occurred].
Purpose
To remind staff that the use of transpositions in single rail DC track circuits can import risk into the signalling system.
Document History
NB 134 ISSUE 5
May 24, 2021
Transpositions on DC Track Circuits
Applies to all single rail DC track circuits on non electrified lines [on electrified lines it is likely that the need for continuous traction return would not cause the circumstances of this Notice...
March 30, 2020
Transpositions on DC Track Circuits
Applies to all single rail DC track circuits on non electrified lines [on electrified lines it is likely that the need for continuous traction return would not cause the circumstances of this Notice...
July 11, 2018
Transpositions on DC Track Circuits
Applies to all single rail DC track circuits on non electrified lines [on electrified lines it is likely that the need for continuous traction return would not cause the circumstances of this Notice...
July 28, 2017
Transpositions on DC Track Circuits
Applies to all single rail DC track circuits on non electrified lines [on electrified lines it is likely that the need for continuous traction return would not cause the circumstances of this Notice...
June 6, 2014
Transpositions on DC Track Circuits
Applies to all single rail DC track circuits on non electrified lines [on electrified lines it is likely that the need for continuous traction return would not cause the circumstances of this Notice...