Investigation Report
Subsea Mud Boost Valve Leaks During Attempts to Open It
11-14-2009 23:50 G08038 AT/618 Pollution
- BSEE
- Investigation Report
- Unknown
- Environmental protectionMechanical failure
- Inspection and maintenanceROV operations
- Valve
- Upstream oil and gas
- Subsea
Summary
An investigation examines a subsea mud boost valve leak during attempts to open it using an ROV and hydraulic jack. Approximately 67 barrels of synthetic oil-based mud reached the sea floor. Findings identify a loose retention pin, actuator rod failure and a flange assembled with two gaskets.
Classifications: Environmental protection; environmental safety; pollution prevention.
Classifications: Mechanical failure; equipment failure.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: ROV operations; remotely operated vehicle operations.
Classifications: Valve; valves.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Subsea; underwater worksite.