Safety Alert
Standpipe Pressure Gauge Thread Nipple Failure (Under Pressure)
Standpipe Pressure Gauge Thread Nipple Failure (Under Pressure)
- IADC
- Safety Alert
- IADC Alert 08-02
- Pressure SystemsStructural and Asset Integrity
- Line of fireMechanical failurePressure systems
- Drilling
- Process pipework and pipelinesPumpsValve
- Pressure relief
- Upstream oil and gas
Summary
During reaming after a connection, mud pump pressure spiked as the crew aligned the table and kelly bushings. The pressure-relief valve blew and a standpipe pressure gauge was expelled. It deflected off the A-leg and struck a worker cleaning breakout tong dies, causing head and torso injuries.
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: Process pipework and pipelines; process piping.
Classifications: Pumps.
Classifications: Valve; valves.
Classifications: Pressure relief; overpressure protection.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Summary
The rig crew was reaming back to bottom after making a connection.
IADC Alert 08-02. Themes: pressure systems, structural and asset integrity.