scope:

This module of NR/L2/TRK/001 is applied where the track has been disturbed or a deficiency exists, which affects the Critical Rail Temperature. This might be as result of:

a) deterioration in the track system;

b) maintenance work, heavy maintenance or refurbishment works

c) renewals or enhancements work;

d) 3rd party work originating outside of the railway system;

e) invasive investigations to support a), b) or c);

f) temporary works implemented to support a), b), c) or d);

g) work to, or a deterioration in an adjacent non-track system.

Purpose

This module of NR/L2/TRK/001 covers:

a) prevention of track buckles;

b) maintenance to be undertaken prior to the start of the hot weather period;

c) calculation of Critical Rail Temperatures;

d) mitigation to be taken during hot weather;

e) mitigation to be taken during exceptionally hot weather;

f) limitations on work to be undertaken during hot weather;

g) reporting of track buckles.

NOTE: Detailed guidance for getting track ready for, and managing in, hot weather can be found in the 'Hot Weather Guidelines for Permanent Way' blue book (NR/GN/TRK/8000/1).