What are some common issues with barrier / risk control systems, and bow ties? Extracts: · Multiple barrier definitions exist, one is “Safety barriers are physical and/or nonphysical means planned to prevent, control, or mitigate undesired events or accidents” · “This definition allows for both hardware barriers (e.g., Emergency Shutdown Systems) and for non-physical barriers (e.g., inspection… Continue reading Risk barrier and bow tie quality issues
Tag: barrier
How do barriers/risk control systems fail due to systemic issues?
How are barriers/risk control systems undermined by systemic issues? This 2004 study unpacks a few mechanisms of how barriers are designed without a deep understanding of work constraints etc. ** Parts 2/3 in comments ** Not a summary – but a few cherry-picked extracts: · “Because engineered systems increasingly incorporate forms of self-protection, operators have to… Continue reading How do barriers/risk control systems fail due to systemic issues?
Preventing fatal accidents in construction through the management of barriers
This paper explored a (close-to) real-time safety performance indicator for barriers (sometimes called ‘controls’, although other typologies place barriers and safeguards under the broader category of ‘barriers’). The author developed and tested an indicator for the availability of barriers against fatal accidents during construction work. I’ve skipped a lot – but it’s open access, so… Continue reading Preventing fatal accidents in construction through the management of barriers
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