scope:

This Network Rail standard specifies the process for the marking up of track on Network Rail's infrastructure prior to the use of tamping machines.

This Network Rail standard applies to all permanent and temporary markings made to the track on Network Rail infrastructure.

Purpose

This standard is part of a pair of related standards, the other being NR/L3/TRK/3242, Marking of track for stoneblowing machines, that specify correct and accurate track marking. Consistent track marking will:

a) avoid confusion between the operators and Network Rail Technical Staff about the work required;

b) reduce or remove damage to infrastructure and preventing delays caused due to overrun as the damage is repaired. Sometimes such damage necessitates planning of further shifts which further reduce access for other works;

c) allows for tamping closer to obstructions where previously whole sleepers may have been avoided. This can lead to better and more accurate quality track;

d) provide intangible benefits of:

1) increased engagement of the TQS on site;

2) improved relationships and communication between NR and operators (external contractors) on site;

3) greater "buy-in" to the pre-site preparation and design process.