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: risk control
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?
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