Safety Alert
Unexpected H2S Detection at Offshore Facilities
Unexpected H2S Detection at Offshore Facilities
- BSEE
- Safety Alert
- BSEE Safety Alert 464
- Hazardous SubstancesHydrogen Sulphide
- Confined space hazardsHydrogen sulphide
- Confined space entryFluid transfer
- Gas detectorStorage tanks
- Emergency responseAtmospheric gas testingOperating and work procedures
- Upstream oil and gas
- Offshore installation
Summary
This alert summarises unexpected hydrogen sulphide detections at offshore facilities producing from fields classified as H2S absent. Cases involve production equipment, cargo tanks, defoamer transfer and ballast-tank cleaning. BSEE recommends considering atmospheric testing, stagnant-tank inspections, crew drills, routine sampling and risk assessments addressing bacterial generation of the gas.
Classifications: Confined space hazards; confined-space hazards.
Classifications: Hydrogen sulphide; H2S; H₂S; hydrogen sulfide.
Classifications: Confined space entry; tank entry; enclosed space entry.
Classifications: Fluid transfer; fluid loading; fluid offloading.
Classifications: Gas detector; gas monitor; gas detection instrument.
Classifications: Storage tanks; atmospheric tanks.
Classifications: Emergency response; emergency preparedness.
Classifications: Atmospheric gas testing; gas testing; atmosphere testing.
Classifications: Operating and work procedures.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.
Summary
The alert concerns unexpected hydrogen sulphide detection at offshore facilities.
BSEE Safety Alert 464. Themes: hazardous substances, hydrogen sulphide.