Safety Flash
BSEE: Miscommunication and trapped pressure causes injury during valve maintenance
BSEE: Miscommunication and trapped pressure causes injury during valve maintenance
- IMCA
- Safety Flash
- IMCA SF 03/26
- IsolationLine of FirePermit to WorkPressure Systems
- Human factorsLine of fireLoss of containmentPressure systems
- Inspection and maintenanceWorking at height
- Process pipework and pipelinesScaffoldValve
- Energy and process isolationJob safety analysisOperating and work proceduresSafety communication
- Upstream oil and gas
- Offshore installation
Summary
An offshore valve-maintenance incident injured a worker when trapped gas pressure ejected a bonnet flange. This flash summarises BSEE findings on incomplete authorisation, inadequate isolation verification, miscommunication, unsafe scaffold use and omitted retaining nuts. Recommendations emphasise confirming zero stored energy, reviewing task assessments, following manufacturer instructions and considering two-person working.
Classifications: Human factors; human performance; ergonomics.
Classifications: Line of fire; struck-by hazards.
Classifications: Loss of containment; containment loss.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Working at height; work at height.
Classifications: Process pipework and pipelines; process piping.
Classifications: Scaffold; scaffolding.
Classifications: Valve; valves.
Classifications: Energy and process isolation; isolation; energy isolation.
Classifications: Job safety analysis; JSA; job hazard analysis; JHA.
Classifications: Operating and work procedures.
Classifications: Safety communication; toolbox talk; toolbox talks.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.
Summary
BSEE has published Safety Alert 509 relating to a gas release incident on an offshore platform.
IMCA SF 03/26. Themes: isolation, line of fire, permit to work, pressure systems.