Investigation Report
Mud-Pump Pressure-Relief Valve Housing Failed and Ejected End Cap
07-04-2015 11:20 G34461 MC 812 LTA (>3 days) - Other Injury - Required Evacuation
- BSEE
- Investigation Report
- Unknown
- Line of fireMechanical failurePressure systems
- Drilling
- PumpsValve
- Functional testingPressure reliefPreventive maintenance
- Upstream oil and gas
- Vessel
Summary
Investigation of a shoulder injury aboard the Noble Globetrotter drillship when a mud-pump pressure-relief valve housing failed and ejected its end cap. Findings identify incorrect pump alignment, pumping into a closed system and absent valve maintenance. The report discusses manufacturer requirements for disassembly, functional checks and calibration.
Classifications: Line of fire; struck-by hazards.
Classifications: Mechanical failure; equipment failure.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Drilling; well drilling.
Classifications: Pumps.
Classifications: Valve; valves.
Classifications: Functional testing; function test.
Classifications: Pressure relief; overpressure protection.
Classifications: Preventive maintenance; preventative maintenance; planned maintenance.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Vessel; aboard ship; onboard vessel.