Safety Flash
Near miss: Lever hoist failure
Near miss: Lever hoist failure
- IMCA
- Safety Flash
- IMCA SF 26/20
- Crane and RiggingInspection and MaintenanceLifting Operations
- Dropped objectsMechanical failure
- Inspection and maintenanceLifting operationsRigging
- Lifting accessories
- Operating and work proceduresPre-use checks
Summary
A lever hoist failed while lowering trenching swords weighing approximately 200 kg, causing an uncontrolled descent to deck. Inspection identified excessive gear wear hidden from pre-use checks. The flash discusses workshop examination, warranty and certification constraints, and changes to rigging recertification, replacement supply and lifting documentation.
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: Rigging; slinging.
Classifications: Lifting accessories; lifting gear; rigging gear.
Classifications: Operating and work procedures.
Classifications: Pre-use checks; pre-use inspection.
Summary
A lever hoist failed causing a load to descend to deck in an uncontrolled manner. The near miss incident occurred when a set of 1m trenching swords were being lowered to deck. The lever hoist being used was rated to 1.6Te, more than capable of lifting the load which was approximately 200kg in weight.
IMCA SF 26/20. Themes: crane and rigging, inspection and maintenance, lifting operations.