Making use of the second sander on long vehicle formation

Making use of the second sander on long vehicle formation, instead of following the practice of ‘suppressing it’, helps to reduce the risk of adhesion related incidents.

The risk associated with adhesion related incidents has been found to be at least 170 times larger than the risk associated with wrong-side track circuit failure (WSTCF) caused by sand contamination. In the past, this has been the reason not to use both fitted sanders. The understanding of the true balance of risk brought about by research RSSB completed in 2015 means operators can use all available sanders on trains to improve the reliability of services.

Many train operating companies applied these results and unsuppressed sanders on all or some of their fleets during the last three autumns, including Southeastern, Govia Thameslink Railway, Great Western Railway, c2c, London Overground Rail Operations, Abellio Greater Anglia, Arriva Trains Wales, South Western Railway and Chiltern.

Adhesion risk

Topics Covered:

  • Sanders
  • Long vehicle formation
  • Adhesion-related incidents
  • Risk

Resources

Review of the risks and opportunities from the application of sand during braking - Research brief
Review of the risks and opportunities from the application of sand during braking (T1046) - report
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