PART 4 Flashcards
A new oil and gas field development.
greenfield
A means of supporting the weight of a cable or other connection.
hangoff
A metalworking process where harder or tougher material is applied to a weaker base metal.
hardfacing
A device used in a hydraulic system to store energy or, in some applications, dampen pressure fluctuations.
hydraulic power unit (HPU)
The inner part of a two-piece valve seat assembly.
inner seat ring
A pressure test that can be performed only on a trunnion mounted ball valve with double piston effect seats.
inside-out air seat test
A method of restricting the travel of a ball valve from fully open to fully closed.
key stop
The flow of a viscous fluid in which the fluid moves in parallel layers with a fixed velocity gradient from the centerline to the containing walls of the conduit.
laminar flow
A circular seal ring of U-shaped cross section encompassing an elastomeric O-ring, which provides resiliency and ensures a seal at the inner and outer lips of the U.
lip seal
A nondestructive inspection procedure for detecting surface cracks in welded areas through the use of fine iron particles in an electrical field.
magnetic particle inspection (MPI)
A common pipe or chamber having several lateral outlets.
manifold
The maximum pressure at which a valve can be operated.
maximum working pressure (MWP)
The seal produced by metal-to-metal contact between the sealing face of the seat ring and the closure elements, without benefit of a synthetic sea
metal-to-metal seal
A pad with multiple wells.
multiwell pad
A type of small valve used for flow metering, having a tapered needlepoint plug or closure element and a seat having a small orifice
needle valve
