General Information on Track Circuits - RGS Online

<strong>General</strong> <strong>Information</strong> on Track Circuits
1 Introduction
2 Responsibilities for
Bonding Installation
Withdrawn Document
Uncontrolled When Printed
Part E
Components and Installation
Railway Group Approved Code of Practice
GK/RC0752
Issue Two
Date December 1998
Page E1 of 52
This part explains the general components applicable to all track circuits.
Components specific to a particular type of track circuit are listed in the relevant
Approved Code of Practice within this handbook.
Installation procedures for individual track circuit types are detailed in the
relevant Approved Code of Practice within this handbook.
Note: The Catalogue Numbers shown within this document are not directly
controlled by Railtrack and as such, will not be maintained and kept up to date.
Although every effort has been made to ensure that these were correct at the
time of publication, it is therefore recommended that your supplier is contacted
and a check is made with regard to the accuracy of these catalogue numbers
prior to use.
The Signal Engineer is responsible for:
a) All fishplate bonds in non–traction return rails.
b) All fishplate bonds in traction return rails of a.c. only electrified areas.
c) The position of all IRJs.
d) All jumper bonds between separate sections of non–traction rails.
e) In a.c. electrified areas (excluding the former Southern Region), all rail to
impedance bond connections and connections between impedance bonds on
the same track.
f) In dual and d.c. electrified areas (excluding the former Southern Region), the
responsibility for impedance bond connections is subject to special
arrangements between the Signal and Electric Traction Engineers.
g) All track circuit rail connections.
h) The insulation of all rods connected to the rails and switches (eg. detection,
facing point lock, point main drive and supplementary drives).
The Electric Traction Engineer is responsible for:
a) All rail joint bonds in d.c. or dual a.c./d.c. traction return rails.
b) All jumper bonds between separate sections of traction return rails and
between the centre connection of impedance bonds in different tracks.
c) On the former Southern Region, rail to impedance bond connections for
traction purposes.
d) All other permanent traction related bonding.
The Permanent Way Engineer is responsible for:
a) The insulation of all point soleplates, tiebars and stretcher bars.
b) The installation of all IRJs.
The requirements and responsibilities for the installation of bonding on electrified
lines are laid down in GM/TT0126 and GM/TT0129.
R A I L T R A C K E 1