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Subsea valves are used in sub-marine environments, which can range in depth from shallow water (usually down to a depth of 75 meters) to deep water (down to 3500 meters). [1] Various industries use subsea valves, with the oil and gas sector accounting for the majority, where there is a need to move material from, to, or below the seabed.
An outline of key instrumentation is shown on Process Flow Diagrams (PFD) which indicate the principal equipment and the flow of fluids in the plant. Piping and Instrumentation Diagrams (P&ID) provide details of all the equipment (vessels, pumps, etc), piping and instrumentation on the plant in a symbolic and diagrammatic form.
Print/export Download as PDF ... Diagram of an automated water well system powered by a submersible pump. ... Diagram of an automated water well system powered by a ...
SS – subsea, as in a datum of depth, e.g. TVDSS (true vertical depth subsea) [citation needed] SSCC – sulphide stress corrosion cracking; SSCP – subsea cryogenic pipeline; SSCS – subsea control system; SSD – sub-sea level depth (in metres or feet, positive value in downwards direction with respect to the geoid [citation needed])
Sub-systems of Subsea trees, might also be further customized to fit individual well needs. Subsea trees may range in size and weight from a few tons to approximately 70 tons for high pressure, deepwater (deeper than 3,000 ft or 910 m) guidelineless applications. Subsea trees contain many additional valves and accessories compared to surface trees.
The input pressure of both pumps is given by the water column above them. For the additional pump this is the water column in the sphere and for the pump turbine it is the water column in the cylinder." [6] The maximum capacity for the hollow concrete sphere depends on the total pump-turbine efficiency, the installation depth and the inner volume.