Investigation Report
Hydrogen Sulphide Release During Pipeline Flushing for Platform Abandonment
06-25-2018 17:30 G12027 PL 5 B H2S Release
- BSEE
- Investigation Report
- Unknown
- Hydrogen sulphideLoss of containment
- DecommissioningFluid transfer
- Gas detectorProcess pipework and pipelinesStorage tanks
- Evacuation, escape and rescueAtmospheric gas testing
- Upstream oil and gas
- Offshore installation
Summary
Investigation of a hydrogen sulphide release during pipeline flushing for platform abandonment at South Pelto 5-B. Detection of 100 ppm prompted cessation of operations and muster on a neighbouring lift barge. The report attributes gas formation to bacterial growth in retained pipeline water and records tank neutralisation without injuries or ill effects.
Classifications: Hydrogen sulphide; H2S; H₂S; hydrogen sulfide.
Classifications: Loss of containment; containment loss.
Classifications: Decommissioning; facility dismantling.
Classifications: Fluid transfer; fluid loading; fluid offloading.
Classifications: Gas detector; gas monitor; gas detection instrument.
Classifications: Process pipework and pipelines; process piping.
Classifications: Storage tanks; atmospheric tanks.
Classifications: Evacuation, escape and rescue; EER; escape and rescue.
Classifications: Atmospheric gas testing; gas testing; atmosphere testing.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.