scope:

This SIN applies to all track circuits where a ZKL3000RC T-COD has been installed prior to 01/02/2021.

Purpose

The purpose of this SIN is to determine the following for all track circuits where a ZKL3000RC T-COD has been fitted:

1. confirm a maintenance track circuit test has been carried out since the ZKL3000RC T-COD was fitted;

2. fit additional cable protection where the ZKL3000RC T-COD cables pass under rails;

3. confirm use of Intelligent Infrastructure (II) RCM monitoring for T-COD fitted track circuits;

4. provide T-COD sighting form.