Investigation Report
Gas-Pressure Release During Tree-Cap Flange Replacement
04-04-2024 2230 G02274 VR 369 A LTA (>3 days)
- BSEE
- Investigation Report
- Unknown
- Human factorsLine of firePressure systems
- Inspection and maintenance
- ValveWellhead
- Job safety analysisLockout and tagoutOperating and work proceduresOperational supervision
- Upstream oil and gas
- Offshore installation
Summary
Investigation of a gas-pressure release during tree-cap flange replacement on well A-15 at Vermilion 369 Alpha. A contractor sustained eye and facial exposure and required medical evacuation. Findings identify inadequate lockout/tagout, missing written isolation instructions, limited platform-specific operator experience and unsuitable working surfaces affecting body positioning.
Classifications: Human factors; human performance; ergonomics.
Classifications: Line of fire; struck-by hazards.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Valve; valves.
Classifications: Wellhead; well head.
Classifications: Job safety analysis; JSA; job hazard analysis; JHA.
Classifications: Lockout and tagout; LOTO; lockout/tagout.
Classifications: Operating and work procedures.
Classifications: Operational supervision.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.