Bow tie risk assessment method
The bow tie method of risk assessment creates diagrams that visualise the risk you are dealing with in a single clear picture. The diagram is shaped like a bow tie, with the 'knot' showing the point where control over a hazard is lost. To the left of the 'knot' the threats and the measures to control them are shown. To the right are the possible consequences of the hazard scenario, along with the possible control measures to limit or nullify them.
The bow tie therefore creates a picture of risk that is easy to understand and for groups to contribute to.
The bow tie methodology was developed in the offshore oil and gas sector in the 1990s. Today it is used by organisations including the Office of Rail and Road, the Civil Aviation Authority and the Military Aviation Authority.
We work with your team to help them understand the threats, consequences and control measures and plot these in bow tie models. We can also provide training on how to apply the method in your workplace.
Visualise barrier effectiveness
Colour-code the barriers to show how effective you believe they are.
Show the barrier type and who is responsible for maintaining it
Having different barrier types will increase the system's robustness. Showing who is responsible makes it clear what everybody is supposed to do to operate safely.
Show recommendations from reports and investigations
Bow ties can show which controls need to be implemented (or strengthened) as a result of investigations, or where the bow tie has highlighted areas where organisational control is weak.
If you'd like us to talk to you about how we may be able to help, please Contact Us.