Bowtie analysis is a visual risk assessment method that shows how an unwanted event could occur and how its consequences are prevented or mitigated.
On the left of the bowtie are the threats that could lead to a defined top event. Preventative controls reduce the likelihood of reaching that event.
On the right are the potential consequences and the recovery or mitigation controls intended to limit their severity.
This structure can be particularly useful for understanding complex building safety risks and the controls relied upon to manage them.
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- How can bowtie analysis be used for building safety?
Bowtie analysis helps building owners move from describing safety measures to understanding how those measures contribute to risk reduction.
- How do you assess whether a building safety control is effective?
Control effectiveness should consider whether the control is appropriate for the risk, correctly implemented and working as intended.
Building safety legislation, regulation and Building Safety Regulator guidance can change. This page is general information, not legal advice — always refer to current legislation and official guidance for your building.