Safety Flash
Loss of pressure to diver’s primary air supply
Loss of pressure to diver’s primary air supply
- IMCA
- Safety Flash
- IMCA SF 14/24
- DivingInspection and MaintenancePressure Systems
- Mechanical failurePressure systems
- Diving operationsInspection and maintenance
- Breathing apparatus
- Evacuation, escape and rescueFunctional testingOperational supervisionPreventive maintenance
- Subsea
Summary
A diver was recovered safely after primary air supply pressure fell. Surface testing traced regulator sticking to dried lubricant restricting the sensing assembly, particularly during light breathing. The flash discusses supervisory intervention, insufficient internal servicing, regulator rotation and increased six-monthly maintenance, testing and cleaning.
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: Evacuation, escape and rescue; EER; escape and rescue.
Classifications: Functional testing; function test.
Classifications: Operational supervision.
Classifications: Preventive maintenance; preventative maintenance; planned maintenance.
Classifications: Subsea; underwater worksite.
Summary
A diver working underwater experienced a pressure drop from the primary HP supply regulator.
IMCA SF 14/24. Themes: diving, inspection and maintenance, pressure systems.