scope:

This document applies to:

a) trainborne plain line preventative grinding; and

b) trainborne plain line corrective grinding.

The location and minimum frequency of preventative grinding are determined by NR/L2/TRK/001.

Purpose

This document sets the process for rail grinding through rail mounted equipment to address compatibility issues between rail mounted equipment installed in accordance with GIRT/7073 issue 2, figure A.2, and the required grinding envelope specified to achieve NR1 and NRHR1 rail profiles.

This controls the risk of striking rail mounted equipment at the lower regions of grinding activity when grinding trains encroach the area available for all infrastructure.