scope:

This standard applies to all new PA, VA & LLPA designs and installations carried out either as a like for like renewal or as part of an enhancement project on Network Rail Infrastructure. This standard does not detail the type of station that requires a PA, VA or LLPA system or when these systems are required.

This standard applies only to new works installations and does not apply to activities undertaken as a result of maintenance.

This standard does not cover the health and safety requirements for the carrying out of the installation and reference shall be made to the appropriate standards in this respect.

This standard does not cover the CDM requirements for the design of PA, VA and LLPA systems.

Purpose

This standard details the technical design and installation requirements for public announcement (PA), voice alarm (VA) and long line public announcement systems (LLPA) on Network Rail infrastructure.