Safety Flash
Personnel exposed to hydrogen sulphide during maintenance
Personnel exposed to hydrogen sulphide during maintenance
- IMCA
- Safety Flash
- IMCA SF 12/24
- Confined SpaceControl of WorkHydrogen Sulphide
- Hydrogen sulphide
- Inspection and maintenance
- Gas detector
- Competence and trainingEvacuation, escape and rescueSafety communicationStop-work authority
- Vessel
Summary
Subcontractors encountered hydrogen sulphide during annual acid-filter maintenance in a vessel’s well treatment system room. Re-entry after an All Stop led to alarms indicating 357 ppm; no adverse health effects were reported. The flash identifies residual water and chemicals and broken pressure gauges, and emphasises evacuation, reporting and safe re-entry.
Classifications: Hydrogen sulphide; H2S; H₂S; hydrogen sulfide.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Gas detector; gas monitor; gas detection instrument.
Classifications: Competence and training; competency assurance; safety training.
Classifications: Evacuation, escape and rescue; EER; escape and rescue.
Classifications: Safety communication; toolbox talk; toolbox talks.
Classifications: Stop-work authority; stop work; stop-work intervention.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
Subcontractor personnel were exposed to a high concentration of Hydrogen sulphide.
IMCA SF 12/24. Themes: confined space, control of work, hydrogen sulphide.