scope:

This specification includes arrangements for the management of safety related reports for all signalling failures for equipment and services provided by Network Rail Company or third parties (including bought in equipment or services). Where Network Rail agrees to manage equipment not belonging to Network Rail or away from Network Rail infrastructure, the arrangements described in this document shall also be applied to such equipment.

Operational Telecommunications failures are no longer included in this Specification. Details can be found in RT/E/S/30047. Note that signalling equipment may cause misoperation of connected services such as Telecommunications equipment. Signalling Engineers are required to cooperate with other disciplines such as Telecommunications Engineers to ensure adequate management investigation of such failures. Telecommunications Engineers shall cooperate similarly where Telecommunications equipment can cause similar misoperation of Signalling equipment.

Purpose

This document describes the Network Rail Company arrangements for ensuring that any safety related failures to signalling equipment and services, owned by Network Rail or provided by third parties for railway operational purposes, are subject to a unified national system of classification, investigation and review.

The system ensures that management control is delegated at a level appropriate to the failure severity and impact, whilst providing a review process that identifies trends and risks.