Safety Flash
Near-miss: Crane hook block dropped to deck
Near-miss: Crane hook block dropped to deck
- IMCA
- Safety Flash
- IMCA SF 01/12
- Crane and RiggingDropped ObjectsLifting OperationsMachinery and Equipment
- Dropped objectsHuman factorsMechanical failure
- Lifting operations
- CraneLifting accessoriesWire rope
- Competence and trainingOperational supervisionRisk assessment
Summary
A crane jib extended without corresponding winch-wire payout, catching the hook block and parting the wire. The 30 kg block fell 10 metres to the deck without injury. Findings concerned operator attention, lone working and absent protective mechanisms; follow-up measures included training and risk-assessment reviews and investigation of lock protection sensors.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Human factors; human performance; ergonomics.
Classifications: Mechanical failure; equipment failure.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Crane; cranes.
Classifications: Lifting accessories; lifting gear; rigging gear.
Classifications: Wire rope; steel wire rope.
Classifications: Competence and training; competency assurance; safety training.
Classifications: Operational supervision.
Classifications: Risk assessment; hazard assessment.
Summary
A crane jib caught the hook block, parting the winch wire and dropping the block ten metres to the deck.
IMCA SF 01/12. Themes: crane and rigging, dropped objects, lifting operations, machinery and equipment.