Safety Flash
Crane anti-two block securing wire failure
Crane anti-two block securing wire failure
- IMCA
- Safety Flash
- IMCA SF 18/19
- Crane and RiggingInspection and MaintenanceLifting Operations
- Dropped objectsMechanical failure
- Inspection and maintenanceLifting operations
- CraneWire rope
- Functional testingOperating and work proceduresPositive retention and reliable securingPre-use checks
- Marine industry
- Vessel
Summary
A vessel crane’s anti-two-block suspension wires failed, allowing the weight assembly to fall along the crane wire to the block without injury. Inspection found a seized actuation lever and visual checks substituted for functional testing. The flash highlights thorough inspection, specified pre-start function tests and checks for retention-wire slack or entanglement.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Crane; cranes.
Classifications: Wire rope; steel wire rope.
Classifications: Functional testing; function test.
Classifications: Operating and work procedures.
Classifications: Positive retention and reliable securing.
Classifications: Pre-use checks; pre-use inspection.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
An anti-two-block securing wire failed after inadequate functional testing allowed crane components to contact and damage the wire.
IMCA SF 18/19. Themes: crane and rigging, inspection and maintenance, lifting operations.