Safety Flash
Failure of a ½” BSP cap under pressure on well service work
Failure of a ½” BSP cap under pressure on well service work
- IMCA
- Safety Flash
- IMCA SF 06/99
- Control of WorkPressure Systems
- Mechanical failurePressure systems
- Pressure testingWell intervention
- Pre-use checks
- Upstream oil and gas
- Offshore installation
Summary
A half-inch BSP cap apparently blew off a pressure-testing manifold on an offshore installation at approximately 1200psi water pressure. The missing cap left incomplete engagement and over-tightening as assumptions. Lessons emphasise fitting ratings, tightening procedures and limitations, and checking condition and thread cleanliness before use.
Classifications: Mechanical failure; equipment failure.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Pressure testing; hydrostatic testing; pneumatic testing.
Classifications: Well intervention; workover; well servicing.
Classifications: Pre-use checks; pre-use inspection.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.
Summary
A pressure-testing cap appeared to blow off, emphasising correct engagement, tightening and inspection of temporary pressure fittings.
IMCA SF 06/99. Themes: control of work, pressure systems.