Safety Flash
Parting of a crane lift wire
Parting of a crane lift wire
- IMCA
- Safety Flash
- IMCA SF 03/00
- Crane and RiggingDropped ObjectsLifting Operations
- Dropped objectsMechanical failure
- Anchor handlingLifting operations
- CraneWire rope
- Positive retention and reliable securing
- Vessel
Summary
An 82.5 te riser anchor dropped to the seabed after a ship’s crane wire parted; nobody was injured. The investigation attributed the apparent failure to slack allowing the wire to overrun a sheave and bear on its pin. Actions included retention checks, improved operator visibility and conditional sheave observation before lifting.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Anchor handling; anchor deployment.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Crane; cranes.
Classifications: Wire rope; steel wire rope.
Classifications: Positive retention and reliable securing.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
A crane wire parted after overrunning a sheave, dropping a riser anchor during installation.
IMCA SF 03/00. Themes: crane and rigging, dropped objects, lifting operations.