Safety Flash
Incident during winch-to-winch wire transfer operations
Incident during winch-to-winch wire transfer operations
- IMCA
- Safety Flash
- IMCA SF 05/03
- Control of WorkCrane and RiggingLifting OperationsLine of Fire
- Human factorsLine of fireMechanical failure
- Rigging
- Lifting accessoriesWinchWire rope
- Job safety analysisSafety communication
- Marine industry
- Vessel
Summary
An offshore vessel’s winch-to-winch transfer ended with a wire sling parting and whiplash damaging platform handrails after repeated stop commands went unheard. The flash describes rising rigging tension and an overload cut-out, then sets out requirements for blind-operation briefings, radio checks, instruction acknowledgement, hand-signal relays and job hazard analysis.
Classifications: Human factors; human performance; ergonomics.
Classifications: Line of fire; struck-by hazards.
Classifications: Mechanical failure; equipment failure.
Classifications: Rigging; slinging.
Classifications: Lifting accessories; lifting gear; rigging gear.
Classifications: Winch; winches.
Classifications: Wire rope; steel wire rope.
Classifications: Job safety analysis; JSA; job hazard analysis; JHA.
Classifications: Safety communication; toolbox talk; toolbox talks.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
Poor radio communication during a blind winch transfer allowed excessive tension to part a sling and damage platform handrails.
IMCA SF 05/03. Themes: control of work, crane and rigging, lifting operations, line of fire.