Investigation Report
Gas Release Following Compressor Shutdown on Medusa Spar
07-13-2022 20:45 G16623 MC 582 Required Muster, Shutdown From Gas Release
- BSEE
- Investigation Report
- Unknown
- Hydrocarbon releasePressure systems
- Inspection and maintenance
- Gas detectorValve
- Emergency responseLockout and tagout
- Upstream oil and gas
- Offshore installation
Summary
BSEE investigated a gas release at Medusa Spar following a compressor shutdown. Backpressure reached an improperly reinstalled blind flange lacking its required gasket; isolation arrangements had not accounted for an automatically opening blowdown valve. Gas detection shut in production, and all 31 personnel safely mustered. No damage or pollution occurred.
Classifications: Hydrocarbon release; hydrocarbon leak; oil and gas release.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Gas detector; gas monitor; gas detection instrument.
Classifications: Valve; valves.
Classifications: Emergency response; emergency preparedness.
Classifications: Lockout and tagout; LOTO; lockout/tagout.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.