scope:

This specification applies to all inspection and maintenance of the permanent way. It sets out:

Minimum frequencies for routine visual, ultrasonic and geometry recording inspections;

procedures for carrying out the above inspections;

details of those track defects which, if found, require immediate blocking of the line to traffic or imposition of an emergency speed restriction;

methods for detailed inspection of certain major track components.

maintenance of the permanent way including lineside items.

Additional requirements specific to continuous welded rail (CWR) are set out in NR/L2/TRK/3011Continuous welded rail (CWR) track.

Unless otherwise stated, the specification applies to all running lines and sidings open to traffic. For the particular requirements at leased depots see RT/CE/S/037 Requirements for maintenance of trackwork in depots by Depot Facility Operators.

The specification applies to permanent way which is undergoing renewal, or is in a temporary condition in connection with underbridge or other works, as well as to permanent way which is in normal maintenance.

Purpose

This is a system specification that gives the minimum requirements for the inspection and maintenance of Network Rail's permanent way.