Safety Flash
Fatalities caused by crane collapse following metal fatigue
Fatalities caused by crane collapse following metal fatigue
- IMCA
- Safety Flash
- IMCA SF 12/16
- Crane and RiggingInspection and MaintenanceStructural and Asset Integrity
- Dropped objectsFalls from heightMaterial fatigueMechanical failure
- Inspection and maintenance
- Crane
Summary
A tower crane collapse killed a worker who fell and a member of the public struck by the crane. Metal fatigue caused 24 slew-ring bolts to fail. The flash highlights an uninvestigated earlier bolt failure on the same crane and inadequate arrangements for crane inspection and maintenance.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Falls from height; fall from height.
Classifications: Material fatigue; metal fatigue.
Classifications: Mechanical failure; equipment failure.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Crane; cranes.
Summary
A tower crane collapsed after metal fatigue caused slew-ring bolts to fail, killing a worker and a member of the public.
IMCA SF 12/16. Themes: crane and rigging, inspection and maintenance, structural and asset integrity.