Safety Flash
Main crane hoist wire damage
Main crane hoist wire damage
- IMCA
- Safety Flash
- IMCA SF 31/20
- Crane and RiggingHuman FactorsLifting OperationsMachinery and Equipment
- Human factorsMechanical failure
- Inspection and maintenanceLifting operations
- CraneOperator displays and control interfacesWire rope
- Competence and trainingHuman-centred designOperating and work proceduresSafety communication
- Vessel
Summary
A crane hoist wire was damaged by rubbing against a knuckle aperture after the operator disengaged automatic knuckle control to activate heave compensation. The flash describes subsea wire cutting, onboard re-socketing and downtime, alongside familiarisation constraints, ignored alarms and recommendations to improve the operator interface and reinforce adherence to manufacturer instructions.
Classifications: Human factors; human performance; ergonomics.
Classifications: Mechanical failure; equipment failure.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Crane; cranes.
Classifications: Operator displays and control interfaces.
Classifications: Wire rope; steel wire rope.
Classifications: Competence and training; competency assurance; safety training.
Classifications: Human-centred design.
Classifications: Operating and work procedures.
Classifications: Safety communication; toolbox talk; toolbox talks.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
Incorrect crane operation caused hoist wire contact with a boom aperture, damaging the rope and requiring extensive replacement.
IMCA SF 31/20. Themes: crane and rigging, human factors, lifting operations, machinery and equipment.