Investigation Report
Hydrogen Sulphide Vented into Platform Wellbay Following Gas Blow-By
06-13-2007 00:36 P00205 LA6912 H2S Release - Required Muster
- BSEE
- Investigation Report
- Unknown
- Hydrogen sulphideLoss of containmentMechanical failure
- Storage tanksValve
- Operating and work proceduresPressure relief
- Upstream oil and gas
- Offshore installation
Summary
An investigation describes hydrogen sulphide venting into the wellbay on platform Gail following gas blow-by to a slop tank. Failure of separator level controls to close a valve was identified as the probable cause, with polymer deposits contributing. The report recommends keeping the drain pot valve closed.
Classifications: Hydrogen sulphide; H2S; H₂S; hydrogen sulfide.
Classifications: Loss of containment; containment loss.
Classifications: Mechanical failure; equipment failure.
Classifications: Storage tanks; atmospheric tanks.
Classifications: Valve; valves.
Classifications: Operating and work procedures.
Classifications: Pressure relief; overpressure protection.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.