Bundle of helically or sinusoidally wound small-diameter chemical, hydraulic, and electrical conductors for power and control systems.

Source: API RP 17B, Recommended Practice for Flexible Pipe, Fourth Edition, July 2008. Global Standards



Flexible hose consisting of a group of electrical cables, optical fibre cables, hoses, pipes, either on their own or with combinations of each other, cabled together for flexibility and oversheathed and/or armoured for mechanical strength, used to transmit fluid/electrical signals to and from a power source to a remote station.

Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards



A control hose bundle or electrical cable used to control subsea functions.

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



Hose, tubing, piping, and/or electrical conductor that directs fluids and/or electrical current or signals to or from subsea trees.

Source: API SPEC 17D, Design and Operation of Subsea Production Systems—Subsea Wellhead and Tree Equipment, Upstream Segment, Second Edition May 2011 (Errata September 2011). Global Standards



Group of functional components, such as electric cables, optical fibre cables, hoses, and tubes, laid up or bundled together or in combination with each other, that generally provides hydraulics, fluid injection, power and/or communication services. NOTE Other elements or armouring may be included for strength, protection, or weight considerations.

Source: API SPEC 17E, Specification for Subsea Umbilicals, Upstream Segment, Fourth Edition, October 2010. Global Standards



Combination of electric cables, hoses or steel tubes, either on their own or in combination (or with fibre optic cables), cabled together for flexibility and over-sheathed and/or armoured for mechanical strength and typically supplying power and hydraulics, communication and chemicals to a subsea system.

Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards



A control hose bundle or electrical cable that runs from the reel on the surface to the subsea control pod on the LMRP.

Source: API STD 53, Blowout Prevention Equipment Systems for Drilling Wells, Upstream Segment, Fourth Edition, November 2012. Global Standards



“Umbilical” means a composite hose or cable or number of separate hoses or cables capable of supplying a breathing mixture, power, heat, communications and other services, as required for a diving operation (ombilical).

Source: Canada Oil and Gas Diving Regulations, SOR/88-600, February 2013. Regulations

Source: Nova Scotia Offshore Area Petroleum Diving Regulations, SOR/95-189, Canada, current to May 31, 2012. Regulations


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