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Project number: 2022-SSH-042

Mapping safety risks in new or updated depot locations


This project produced a clearer measure of risk and safety performance in new and updated depot locations. It gives an industry-wide picture of risk so there is a shared understanding of train depot challenges for analysis and investment.
'The bowtie exercises produced detailed and useful information the industry can use to address risk.'
Chris Knowles
Director of System Safety and Health, RSSB

The challenge

Safety investment needs to include risks at depots but SMIS did not include data at these locations. This meant that industry had a limited understanding of risk-related challenges.

Improving locational data for depots within SMIS would enable the industry to precisely identify and target future safety investment needs including depots. This data would enable cross-industry groups to identify hotspots and specific risks at common depot locations at a national level. Once risks are identified, industry can identify the ways potential failure and determine the necessary controls to mitigate these risks.

This project helped industry to carry out more detailed analyses of selected risk areas. It also fosters targeted collaborative efforts on potential control measures.

What we did

We responded to a request from the Depot Working Group for a better, shared understanding of safety risks in depots.

We worked to develop a key features view of depots using our Common Hazards for the Management of Industry Safety (CHAMOIS) approach. This describes depots at two distinct levels of aggregation. The new locations were sources from the CHAMOIS infrastructure list.

Two bowties have been developed on walkway risk and electrical risk. These will help practitioners manage the controls associated with these risks better. 

Benefits delivered

This project has:

  • enhanced the data managed within SMIS. Users can now pinpoint potential risk failures and weaknesses. This equips our members and the industry with a more comprehensive understanding of collective challenges. Practitioners can improve these.
  • developed bowtie level detail for two key risk areas in a depot. This will support risk management.
  • provided a CHAMOIS view of key depot features commonly found across train operators and provided a risk view these features present.

Depot risk mapping gives a systematic approach to collectively understanding and organising risk management within depots.