Digest
What happens when the lights go out? — Process Safety Beacon, January 2012
What happens when the lights go out? — Process Safety Beacon, January 2012
- CCPS
- Digest
- Process Safety Beacon January 2012
- Electrical SafetyEmergency ResponseProcess Safety
- Human factorsLoss of containmentProcess safety
- Electrical work
- Switchgear
- Emergency responseFunctional testingOperating and work proceduresRisk assessment
Summary
A mistaken circuit-breaker operation briefly interrupted PLC power, leaving a process running with partial controls and overloading a vent scrubber with toxic material. The bulletin emphasises assessing combined utility-failure effects, understanding device failure states, clearly labelling electrical controls, verifying operation and practising emergency procedures.
Classifications: Human factors; human performance; ergonomics.
Classifications: Loss of containment; containment loss.
Classifications: Process safety; major accident hazards.
Classifications: Electrical work; electrical maintenance.
Classifications: Switchgear; switch gear.
Classifications: Emergency response; emergency preparedness.
Classifications: Functional testing; function test.
Classifications: Operating and work procedures.
Classifications: Risk assessment; hazard assessment.
Summary
One-page Beacon on process hazards arising from loss of electrical power.
Process Safety Beacon January 2012. Themes: electrical safety, emergency response, process safety.