Investigation Report
Crane Overload Protection Lowered Basket onto Deck During Drilling Tool Offloading
11-13-2007 10:00 G19967 MC/568 Equipment Failure
- BSEE
- Investigation Report
- Unknown
- Dropped objectsFunctional safety
- Inspection and maintenanceLifting operations
- Crane
- Competence and trainingOperating and work proceduresSafety communication
- Upstream oil and gas
Summary
Investigates a crane incident during offloading of drilling tools. A temporary weight-indicator repair caused the computer to count actual and simulated loads, triggering overload protection and lowering the basket onto the deck. No injuries occurred. Responses included personnel training, revised rig procedures and dissemination of lessons learnt.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Functional safety; safety instrumented systems; SIS.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Crane; cranes.
Classifications: Competence and training; competency assurance; safety training.
Classifications: Operating and work procedures.
Classifications: Safety communication; toolbox talk; toolbox talks.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.