NR NR/L2/OPS/095 ISSUE 6 PDF

This business process sets out the assessment processes for identifying high risk sites in respect of wrong side track circuit failures under leaf fall contamination conditions. It is to be used by Regions and Routes to enable appropriate action to be taken in accordance with GO/RT3208 In this respect, the requirements of this business process apply where track circuits are used to detect the presence of trains

This business process describes the assessment processes for identifying a high risk site in respect of conditions of low adhesion between the wheel and the rail, and is to be used by Regions and Routes to enable appropriate action to be taken in accordance with GE/RT8040

This standard contains a risk assessment process for prioritizing high risk sites and deciding on actions or mitigations to reduce the risk so far as is reasonably practicable (SFAIRP). It may be used by Regions and Routes to enable appropriate action to be taken in accordance with RIS-0386-CCS

Purpose

The purpose of this business process is to identify, risk rank and create a removal plan for any location which may be classified as a high risk site in respect of likely occurrences of wrong side track circuit failures (WSTCFs) under leaf fall contamination conditions.

The removal of these high risk sites through effective mitigation will reduce the impact to safety and performance of WSTCFs during the autumn season. The removal of high risk sites of low rail adhesion reduces the probability of a low adhesion-related incident, such as a station overrun or signal passed at danger (SPAD), and the safety and performance impact of such an incident.

This process will allow the classification of high risk sites in respect of conditions of low rail adhesion between the wheel and the rail on Network Rail Managed Infrastructure.