Safety Flash
Diving instructor killed – incorrect valve threads
Diving instructor killed – incorrect valve threads
- IMCA
- Safety Flash
- IMCA SF 03/23
- DivingMachinery and EquipmentPressure Systems
- Line of fireMechanical failurePressure systems
- Diving operations
- Gas cylinderValve
Summary
A diving instructor was fatally struck by a valve that detached from a cylinder during a dive. The cylinder’s G3/4 internal thread was incompatible with the valve’s M25x2 external thread. The flash advises members to follow IMCA guidance on diving cylinder and valve thread compatibility.
Classifications: Line of fire; struck-by hazards.
Classifications: Mechanical failure; equipment failure.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Diving operations; diving; commercial diving.
Classifications: Gas cylinder; compressed gas bottle; gas cylinders.
Classifications: Valve; valves.
Summary
During a dive, the valve came loose from the diving cylinder and fatally hit the diving instructor
IMCA SF 03/23. Themes: diving, machinery and equipment, pressure systems.