Safety Flash
Uncontrolled ascent of lay-down head
Uncontrolled ascent of lay-down head
- IMCA
- Safety Flash
- IMCA SF 03/05
- DivingLifting OperationsManagement of Change
- Line of fire
- Lifting operationsSaturation diving
- Lifting planManagement of changeOperating and work proceduresRisk assessment
- Subsea
Summary
A saturation diver working in 120 m of water was struck by an ascending pipeline lay-down head during lift-bag preparations. The flash identifies inaccurate weight data use, inadequate communication, disconnected safety arrangements and insufficient change assessment. Recommendations address measured load weights, lift planning, diving procedures and escalation of safety-device changes.
Classifications: Line of fire; struck-by hazards.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Saturation diving; sat diving.
Classifications: Lifting plan; lift planning.
Classifications: Management of change; MOC; change management.
Classifications: Operating and work procedures.
Classifications: Risk assessment; hazard assessment.
Classifications: Subsea; underwater worksite.
Summary
A member has reported that a saturation diver in 120m of water, preparing to move a pipeline lay-down head (LDH) using a lift bag, was struck in the back by the uncontrolled ascent of the LDH.
IMCA SF 03/05. Themes: diving, lifting operations, management of change.