Investigation Report
Hydrogen Sulphide Release During Condensate Rerouting
08-12-2006 10:00 P00450 SM6524 5-LTA (1-3 days) Required Evacuation
- BSEE
- Investigation Report
- Unknown
- Human factorsHydrocarbon releaseHydrogen sulphideMechanical failure
- Fluid transfer
- Pressure vesselProcess pipework and pipelinesValve
- Evacuation, escape and rescueLockout and tagoutOperating and work procedures
- Upstream oil and gas
- Offshore installation
Summary
Investigation of a hydrogen sulphide release on Hidalgo platform during condensate rerouting. Opening the wrong valve, combined with a check valve lacking a positive seal, allowed condensate into deck drains. Five workers received medical care and were evacuated. Corrective measures included locking the valve, documenting procedures and planned pipework alterations.
Classifications: Human factors; human performance; ergonomics.
Classifications: Hydrocarbon release; hydrocarbon leak; oil and gas release.
Classifications: Hydrogen sulphide; H2S; H₂S; hydrogen sulfide.
Classifications: Mechanical failure; equipment failure.
Classifications: Fluid transfer; fluid loading; fluid offloading.
Classifications: Pressure vessel; pressure vessels.
Classifications: Process pipework and pipelines; process piping.
Classifications: Valve; valves.
Classifications: Evacuation, escape and rescue; EER; escape and rescue.
Classifications: Lockout and tagout; LOTO; lockout/tagout.
Classifications: Operating and work procedures.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.