Safety Flash
Hydrogen Sulphide (H2S) detected onboard vessel
Hydrogen Sulphide (H2S) detected onboard vessel
- IMCA
- Safety Flash
- IMCA SF 08/25
- Emergency ResponseHazardous SubstancesHydrogen SulphidePersonal Protective Equipment
- Hydrogen sulphide
- Inspection and maintenance
- Personal protective equipmentStorage tanks
- Emergency responseAtmospheric gas testingOperating and work proceduresRisk assessment
- Marine industry
- Vessel
Summary
A vessel-wide odour prompted crew to investigate with gas detectors but without respiratory protection. Hydrogen sulphide reached a measured 170 ppm in the Grease Trap room, entering through a dry drain trap. The flash examines sewage-system maintenance, incomplete procedures and risk assessment, and subsequent revisions to tank-flushing, drain-trap and emergency arrangements.
Classifications: Hydrogen sulphide; H2S; H₂S; hydrogen sulfide.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Personal protective equipment; PPE; personal protection equipment.
Classifications: Storage tanks; atmospheric tanks.
Classifications: Emergency response; emergency preparedness.
Classifications: Atmospheric gas testing; gas testing; atmosphere testing.
Classifications: Operating and work procedures.
Classifications: Risk assessment; hazard assessment.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
Several persons reported to bridge about a smell of septic or rotten eggs that was present all over the vessel. Hydrogen Sulphide (H2S) was suspected.
IMCA SF 08/25. Themes: emergency response, hazardous substances, hydrogen sulphide, personal protective equipment.