Investigation Report
Valve Assembly Falls During Preparations for Blowout Preventer Testing
04-17-2007 02:00 G27483 BA/A24 LTA (>3 days) - Drill Pipe/Valve Back Out
- BSEE
- Investigation Report
- Unknown
- Dropped objectsMechanical failureSlips, trips and falls
- DrillingLifting operations
- Rotating machineryValve
- Upstream oil and gas
Summary
An investigation examines a valve assembly falling during preparations for blowout preventer testing. An escaping worker slipped and suffered a severe left-arm injury. The report identifies a backed-out drill-pipe connection and discusses how pipe-spinner positioning could loosen upper connections before the assembly received its required torque.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Slips, trips and falls; same-level falls.
Classifications: Drilling; well drilling.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Rotating machinery; rotating equipment.
Classifications: Valve; valves.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.