Safety Flash
H₂S leak umbilical laying
H₂S leak umbilical laying
- IMCA
- Safety Flash
- IMCA SF 01/12
- Control of WorkHazardous SubstancesHydrogen Sulphide
- Hydrogen sulphideLoss of containment
- Exclusion zonesAtmospheric gas testingStop-work authority
- Marine industry
- Vessel
Summary
A hydrogen sulphide leak during umbilical laying prompted work stoppage and area isolation after deck personnel noticed a rotten-egg smell. Specialist air testing preceded resumption, with no contamination or illness reported. The flash identifies missing awareness and recommends testing before and during deployment, and halting operations if leaks occur.
Classifications: Hydrogen sulphide; H2S; H₂S; hydrogen sulfide.
Classifications: Loss of containment; containment loss.
Classifications: Exclusion zones; red zones; restricted access zones.
Classifications: Atmospheric gas testing; gas testing; atmosphere testing.
Classifications: Stop-work authority; stop work; stop-work intervention.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
An umbilical leak released hydrogen sulphide during deployment, requiring work stoppage, isolation and atmospheric testing.
IMCA SF 01/12. Themes: control of work, hazardous substances, hydrogen sulphide.