Investigation Report
Hydrogen Sulphide Detected During Dewatering Following Hurricane Recovery
03-19-2006 10:00 G02638 MC/194 H2S Detected Excess of 20ppm
- BSEE
- Investigation Report
- Unknown
- Hydrogen sulphide
- Fluid transfer
- Atmospheric gas testingOperating and work proceduresStop-work authority
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Summary
Investigation of hydrogen sulphide detected during dewatering at Cognac following hurricane recovery work. Analysis linked the gas to bacterial activity beneath oil-coated deposits that chemical treatment had not reached. The report records shutdown, atmospheric checks and recommendations for revised de-oiling procedures, biocide circulation and bacteria testing before dewatering.
Classifications: Hydrogen sulphide; H2S; H₂S; hydrogen sulfide.
Classifications: Fluid transfer; fluid loading; fluid offloading.
Classifications: Atmospheric gas testing; gas testing; atmosphere testing.
Classifications: Operating and work procedures.
Classifications: Stop-work authority; stop work; stop-work intervention.