NR RT/E/C/11721 ISSUE 2 PDF

This Code of Practice contains a sample Verification Test Specification of the activities required to demonstrate that an Interlocking constructed broadly in accordance with Railtrack's Standard Free-Wired Interlocking system meets the Application Logic requirements generally required of Railtrack's Fixed Block signalling systems in the UK. The method of detailing the Application Logic Requirements is as defined in RT/E/C/11202 Signalling Control Tables.

It should be noted that this Test Specification does not describe a comprehensive and absolute Code of Practice for application to every ‘Relay-based' signalling system. Certain ‘Relay-based' systems may require more or less specific testing of Control Tables as appropriate. Such special requirements should be detailed in the Testing Plan.

Also detailed here are guidelines to be considered for Validation activities.