Safety Flash
Injuries due to failure of diver's emergency gas cylinder – use of incompatible threads
Injuries due to failure of diver's emergency gas cylinder – use of incompatible threads
- IMCA
- Safety Flash
- IMCA SF 01/16
- DivingPressure Systems
- Line of fireMechanical failurePressure systems
- Diving operationsInspection and maintenance
- Gas cylinderValve
- Independent audit and verificationOperating and work procedures
- Vessel
Summary
Five divers were injured aboard a diving support vessel when a pillar valve detached from an emergency gas cylinder during dive preparation. Preliminary assessment identified incompatible cylinder and valve threads. The flash suggests compatibility checks, permanent identification, separate registration, work instructions and inspection audit records while investigation continues.
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: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Gas cylinder; compressed gas bottle; gas cylinders.
Classifications: Valve; valves.
Classifications: Independent audit and verification.
Classifications: Operating and work procedures.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
An International Association of Oil & Gas Producers (IOGP) member has passed to IMCA for circulation to members an incident in which a pillar valve forcefully parted from a High Pressure (HP) cylinder filled with 180 bar of compressed air.
IMCA SF 01/16. Themes: diving, pressure systems.