scope:

This guidance should be used by those who prepare maintenance regimes for LU Signalling assets. This guidance should be used when preparing a maintenance regime for LU Signalling assets.

Note: Guidance and methodology for planning and execution of preventative maintenance, incident management and fault rectification can be found in the guidance document G2549 'Signalling and train control systems maintenance'.

Purpose

This document provides guidance about the minimum requirements to establish maintenance procedures and processes for use on London Underground (LU), in accordance with S1199 'Signalling and Signalling Control - Operation and Maintenance'.

Note: This document provides guidance to the requirements within S1199 'Signalling and Signalling Control - Operation and Maintenance'. Further guidance can be found within G2549 'Signalling and train control systems maintenance'.