Safety Flash
Diver experienced an air flow restriction
Diver experienced an air flow restriction
- IMCA
- Safety Flash
- IMCA SF 10/22
- DivingInspection and MaintenanceMachinery and Equipment
- Mechanical failurePressure systems
- Diving operationsInspection and maintenance
- Breathing apparatusDiver umbilicalValve
- Emergency responseOperating and work proceduresPre-use checksPreventive maintenance
- Marine industry
- Subsea
Summary
A surface-supplied diver experienced restricted air flow at 23msw and the dive was aborted without injury. Investigation identified a needle valve that failed to open properly, with possible overtightening linked to premature equipment fatigue. Actions included valve replacement, revised pre-dive checks and operating procedures, and a team emergency debrief.
Classifications: Mechanical failure; equipment failure.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Diving operations; diving; commercial diving.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Breathing apparatus; SCBA; self-contained breathing apparatus.
Classifications: Diver umbilical; diving umbilical.
Classifications: Valve; valves.
Classifications: Emergency response; emergency preparedness.
Classifications: Operating and work procedures.
Classifications: Pre-use checks; pre-use inspection.
Classifications: Preventive maintenance; preventative maintenance; planned maintenance.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Subsea; underwater worksite.
Summary
At the beginning of an air dive at 23msw, a diver experienced an air flow restriction.
IMCA SF 10/22. Themes: diving, inspection and maintenance, machinery and equipment.