Safety Flash
Loss of consciousness due to exposure to H₂S
Loss of consciousness due to exposure to H₂S
- IMCA
- Safety Flash
- IMCA SF 03/14
- Confined SpaceControl of WorkHydrogen SulphidePermit to Work
- Confined space hazardsHydrogen sulphide
- Inspection and maintenance
- Gas detectorStorage tanks
- Job safety analysisManagement of changeOperating and work proceduresPermit to work
- Marine industry
Summary
Two mechanics lost consciousness and a third became dizzy after hydrogen sulphide escaped during high-pressure water cleaning of a sewage tank. All recovered. The flash identifies omitted toxic-gas hazards, absent gas detection and inadequate planning, and discusses permits, revised procedures, training and confined-space precautions.
Classifications: Confined space hazards; confined-space hazards.
Classifications: Hydrogen sulphide; H2S; H₂S; hydrogen sulfide.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Gas detector; gas monitor; gas detection instrument.
Classifications: Storage tanks; atmospheric tanks.
Classifications: Job safety analysis; JSA; job hazard analysis; JHA.
Classifications: Management of change; MOC; change management.
Classifications: Operating and work procedures.
Classifications: Permit to work; PTW; work permit.
Classifications: Marine industry; shipping industry; maritime sector.
Summary
Three mechanics were exposed to hydrogen sulphide released during sewage tank cleaning.
IMCA SF 03/14. Themes: confined space, control of work, hydrogen sulphide, permit to work.