scope:

This Level 2 standard 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 specification and a number of individually published chapters.

Purpose

This Level 2 standard mandates the application of the sections of the Signalling Works Testing Handbook which provides instruction and guidance to testers on the mandatory 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.

This handbook also, as far as practicable, specifies consistent procedures, and process controls are consistent across Network Rail Infrastructure.

The Signalling Works Testing Handbook has been created to collate together all the documents describing the procedures and process controls for signal works testing, and to remove the need for signal works testing related Technical Instructions