Investigation Report
Service Loop Falls to Drill Floor During Bottom-Hole Assembly Recovery
01-02-2016 09:10 G26315 GC 512 Other (Dropped Object)
- BSEE
- Investigation Report
- Unknown
- Dropped objectsMechanical failure
- Drilling
- Hose
- Operating and work proceduresPositive retention and reliable securingSafety communication
- Upstream oil and gas
- Vessel
Summary
An investigation examines a service loop falling approximately 152 feet to the drill floor during bottom-hole assembly recovery on Diamond Ocean BlackLion. A ring snagged a protruding derrick bolt, pulling the loop from the top drive. Findings identify unsecured rings, inadequate installation guidance, missed manufacturer information and weather-induced swaying. Nobody was injured.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Drilling; well drilling.
Classifications: Hose; flexible hose.
Classifications: Operating and work procedures.
Classifications: Positive retention and reliable securing.
Classifications: Safety communication; toolbox talk; toolbox talks.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Vessel; aboard ship; onboard vessel.