The WOCS, also commonly referred to as the installation/workover riser package, provides the means to remotely control/monitor all of the required functions on the C/WO equipment, subsea tree and downhole equipment during the various phases of the C/WO operation.

The WOCS usually consists of the following components: pumping unit to provide hydraulic power; main control panel; remote control panel on the drill floor; process shutdown panel near the production test equipment; emergency shutdown panels at main escape routes; umbilical(s) on powered winch(es).

Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards


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