Investigation Report
Crane Boom Failure During Drill Cuttings Box Transfer
12-11-2008 19:30 G26023 EI/98 Crane - Incident >$25K - Boom heel
- BSEE
- Investigation Report
- Unknown
- Dropped objectsMaterial fatigueMechanical failureRegulation and legislationStructural and asset integrity
- Inspection and maintenanceLifting operations
- Crane
- Pre-use checks
- Upstream oil and gas
- Offshore installationVessel
Summary
Investigation of a crane boom failure during transfer of a drill cuttings box from Hercules Rig 251 to a workboat. The report identifies metal fatigue at the boom heel as the probable cause, examines uncorrected inspection deficiencies and conflicting stop-pawl accounts, and discusses regulatory jurisdiction. No injuries or pollution resulted.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Material fatigue; metal fatigue.
Classifications: Mechanical failure; equipment failure.
Classifications: Regulation and legislation; safety legislation; regulatory requirements.
Classifications: Structural and asset integrity; asset integrity; structural integrity.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Crane; cranes.
Classifications: Pre-use checks; pre-use inspection.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.
Classifications: Vessel; aboard ship; onboard vessel.