scope:

This specification applies to:

•General installation techniques;

•The installation of signalling works applicable to the Infrastructure, including temporary works; and

•The installation of specific types of signalling systems and equipment, but not the trainborne parts of track-to-train systems.

This specification also applies to maintenance work and repairs, including like-forlike replacement of equipment. However, reference shall also be made to the appropriate maintenance standards and Signal Maintenance Testing standards.

This specification does not cover:

•The manufacture of individual items of equipment;

•The installation of trainborne equipment; or

•Equipment ordering details and processes.

The presentation of design detail is the subject of Signalling Design: Production.

The testing of signalling works is covered by Signal Works Testing.

The modules which form part of this specification represent the best historical practice for signalling installation which should be followed unless specified in other standards or approved as a superior practice by the responsible signalling project engineer.

An index of the modules is contained in Appendix A with a topic index in Appendix B.

Purpose

This specification, in support of Railway Group Standard GK/RT0208, Installation of Signalling and Operational Telecommunications Equipment, requires that any installation of signalling equipment on Network Rail Managed Infrastructure provides:

•An operationally safe installation of new or altered systems and equipment, with safe interfaces between systems;

•That safe methods of work are adopted, with safe interfaces between all parties involved or affected;

•A correct and consistent interpretation of design detail;

•A neat and tidy appearance;

•Compliance with the client's specified requirements, so that the installation is dependable, fit for purpose and free from defect;

•Adequate testability; and

•Safe and easy maintenance.