scope:

This standard is for the inspection and identification of defects and wear in cast austenitic manganese steel (AMS) and Bainitic steel crossings in running lines of Network Rail infrastructure. It defines minimum actions and rectification timescales for defects identified with crossings.

This standard also describes the assessment for wear and batter for nirmal grade crossing types. The Route Asset Manager (Track) will set additional requirements based on route criticality.

Further information on the various types of steel is given in Appendix A.

Purpose

The majority of defects and wear detected in crossings are repairable if detected at an early enough stage. The identification and timely rectification of crossing wear, or associated track condition issues, will reduce the risk of crossing failure or premature replacement.

The early detection of a crack in all steel grades is paramount.

The benefits of this standard are the early identification and rectification of defects which, when discovered in a timely manner, will prevent costly replacement of crossings. Risks of crossing failure will also be reduced as a result.

This Network Rail standard specifies the requirements for the inspection and identification of defects and wear in crossings. The specification now includes guidance for maintenance arc weld repair with appropriate minimum actions and also gives details of minimum actions to be taken when significant defects are discovered.

This standard is intended to be read in conjunction with other standards concerning the inspection and rectification of defects in crossings.