Safety Flash
NTSB: Crane wire failure
NTSB: Crane wire failure
- IMCA
- Safety Flash
- IMCA SF 23/24
- CorrosionCrane and RiggingInspection and MaintenanceLifting Operations
- CorrosionDropped objectsMechanical failure
- Cargo transferInspection and maintenanceLifting operations
- CraneWire rope
- Preventive maintenance
- Marine industry
- Vessel
Summary
This safety flash recounts a crane wire failure during offloading of a 69-tonne wind turbine nacelle into a cargo vessel’s hold. Undetected corrosion and strand-wire wear were the probable cause. It explains how grease concealed corrosion despite routine inspections and maintenance, and highlights inspection requirements and condition-dependent wire replacement intervals.
Classifications: Corrosion; corrosion damage.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Cargo transfer; cargo handling.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Crane; cranes.
Classifications: Wire rope; steel wire rope.
Classifications: Preventive maintenance; preventative maintenance; planned maintenance.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
The National Transportation Safety Board of the United States (NTSB) published "Safer Seas Digest 2023".
IMCA SF 23/24. Themes: corrosion, crane and rigging, inspection and maintenance, lifting operations.