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Definition(s)

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Riser Coupling Pin

The male coupling member. Source: API SPEC 16R, Specification for Marine Drilling Riser Couplings, Exploration and Production Department, First Edition, January 1997. Global Standards

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Riser Coupling Box

The female coupling member. Source: API SPEC 16R, Specification for Marine Drilling Riser Couplings, Exploration and Production Department, First Edition, January 1997. Global Standards

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Riser Connector (LMRP Connector)

A hydraulically operated connector that joins the LMRP to the top of the lower BOP stack. Source: API SPEC 16D, Specification for Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment, Upstream Segment, Second Edition, July 2004. Global Standards

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Rigid Conduit

Hydraulic conduit. Source: API SPEC 16D, Specification for Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment, Upstream Segment, Second Edition, July 2004. Global Standards

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Return-To-Reservoir Circuit

A hydraulic control circuit in which spent fluid is returned to the reservoir. Source: API SPEC 16D, Specification for Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment, Upstream Segment, Second Edition, July 2004. Global Standards

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Retrievable Control Pod

A subsea pod that may be run or retrieved remotely using a wire line, drill pipe, or other means, without retrieval of the LMRP or BOP stack. Source: API SPEC 16D, Specification for Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment, Upstream Segment, Second Edition, July 2004. Global Standards

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Remote Panel

See control panel. Source: API SPEC 16D, Specification for Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment, Upstream Segment, Second Edition, July 2004. Global Standards

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Reliability Analysis

Control systems for well control equipment are custom designed in accordance with the buyer’s requirements. When specifying a highly complex control system (e.g., one employing an assortment of deepwater features), the buyer may prescribe a level of formal reliability analysis. One purpose is to identify elements exhibiting unacceptable failure probability. Failure analysis, as part of the design process, can help to avoid single point failure modes and the use of unreliable components. ISO 14224 provides guidelines for selecting a suitable procedure for performing system reliability analysis. Source: API SPEC 16D, Specification for Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment, Upstream Segment, Second Edition, July 2004. Global Standards

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Regulator (Pressure)

A hydraulic device that reduces upstream supply pressure to a desired (regulated) pressure. Note: It may be manually or remotely operated and, once set, should maintain the regulated output pressure unless reset to a different pressure. Source: API SPEC 16D, Specification for Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment, Upstream Segment, Second Edition, July 2004. Global Standards

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Reel (Hose or Cable)

A reel, usually power driven, that stores, pays-out and takes-up umbilicals, either control hose bundles or electrical cables. Source: API SPEC 16D, Specification for Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment, Upstream Segment, Second Edition, July 2004. Global Standards  

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Readback

An indication of a remote condition. Source: API SPEC 16D, Specification for Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment, Upstream Segment, Second Edition, July 2004. Global Standards  

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Reaction Time

The actual time elapsed between initiation of a command to completion of the function. Source: API SPEC 16D, Specification for Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment, Upstream Segment, Second Edition, July 2004. Global Standards  

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Rapid Discharge Accumulators

Accumulators required to satisfy their functional fluid demand in less than 3 min. This includes dedicated shear (both surface and subsea), dead man systems, autoshear accumulators, some acoustic and special purpose accumulators. Source: API SPEC 16D, Specification for Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment, Upstream Segment, Second Edition, July 2004. Global Standards  

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Ram BOP

Blowout preventer that uses metal blocks assembled with elastomer seals to seal off pressure on a wellbore with or without tubulars in the bore.

Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards

Ram BOP

A blowout preventer that uses rams to seal off pressure in the wellbore. Source: API SPEC 16D, Specification for Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment, Upstream Segment, Second Edition, July 2004. Global Standards