scope:

Applies to all maintenance or project works to alter Network Rail's signalling infrastructure, or with the potential to affect the fitness for purpose of the Network Rail Infrastructure.

The Signalling Works Testing Handbook consists of this document and a number of individually published chapters.

Purpose

This document mandates the application of the sections of the Signalling Works Testing Handbook.

It provides instruction and guidance to testers on the procedures and process controls so that new signalling installations, and alterations to existing installations, are independently tested in a manner that confirms:

• Compliance with the project Concept Design and Engineering Details, and fitness for purpose before the signalling system is offered for entry into service.

The Signalling Works Testing Handbook has been created to collate together all the documents describing the procedures and process controls for signal works testing.