Investigation Report
Cargo Box Fell Following Crane Winch Failure During Offloading
11-20-2021 13:15 G21790 GC 338 Production - Equipment failure - Human Error
- BSEE
- Investigation Report
- Unknown
- Functional safetyHuman factorsMaterial fatigueMechanical failure
- Cargo transferInspection and maintenanceLifting operations
- CraneOperator displays and control interfacesWinch
- Alarm managementCompetence and trainingNon-destructive testingOperating and work procedures
- Upstream oil and gas
- Offshore installation
Summary
BSEE investigates an auxiliary crane winch failure during cargo offloading at Front Runner. A cargo box fell approximately 20–30 feet before striking a supply vessel and entering offshore waters. The report examines ring-gear fatigue, overloading, shock-loading, incorrect manifested weight, inspection records and alarm-triggered shutdown behaviour. No injuries occurred.
Classifications: Functional safety; safety instrumented systems; SIS.
Classifications: Human factors; human performance; ergonomics.
Classifications: Material fatigue; metal fatigue.
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: Operator displays and control interfaces.
Classifications: Winch; winches.
Classifications: Alarm management.
Classifications: Competence and training; competency assurance; safety training.
Classifications: Non-destructive testing; NDT; non-destructive examination; NDE.
Classifications: Operating and work procedures.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.