NR NR/L2/SIG/10072 ISSUE 5 PDF

This Network Rail standard specifies the application of Special Inspection Notices (SINs) for Network Rail's infrastructure and equipment.

It specifies the processes by which new SINs are proposed, authorised, issued, implemented and closed, and specifies processes to seek dispensation or change of scope against existing SINs.

It also specifies the process for monitoring the progress of SINs throughout Network Rail.

It applies to all SINs currently in force and to any issued in the future.

Purpose

This standard specifies a process where defects in infrastructure and equipment that can present a hazard can be identified, and where mitigating measures and actions can be put in place in a timescale commensurate with the risk to obviate similar defects elsewhere on the network.