Safety Flash
Three bolts sheared on a lifting trunnion
Three bolts sheared on a lifting trunnion
- IMCA
- Safety Flash
- IMCA SF 02/22
- Dropped ObjectsLifting OperationsStructural and Asset Integrity
- Dropped objectsMechanical failureStructural and asset integrity
- Lifting operations
- Lifting accessories
- Job safety analysisPermit to workPositive retention and reliable securingRisk assessment
- Offshore wind
Summary
Following offshore renewables transition-piece installation, a 44 kg lifting-trunnion cover plate fell approximately 0.5 m when three securing screws sheared. The flash identifies an incorrect assumption about sideways loading in screw verification, records work-planning safeguards used, and calls for welding cover plates to the trunnions.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Structural and asset integrity; asset integrity; structural integrity.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Lifting accessories; lifting gear; rigging gear.
Classifications: Job safety analysis; JSA; job hazard analysis; JHA.
Classifications: Permit to work; PTW; work permit.
Classifications: Positive retention and reliable securing.
Classifications: Risk assessment; hazard assessment.
Classifications: Offshore wind; offshore wind energy.
Summary
A hatch cover weighing 44kg fell approximately 0.5m after the securing screws had sheared.
IMCA SF 02/22. Themes: dropped objects, lifting operations, structural and asset integrity.