Umbilical fluid line and umbilical

A component of a fluid line for a subsea power umbilical 1 comprises a metal tube 4 having a semiconducting coating 10. In other embodiments, there is provide a loaded reel for use in manufacturing the integrated power umbilical. In other embodiments, there is provided a method of manufacturing a co...

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Bibliographische Detailangaben
1. Verfasser:	Børnes, Atle Harald
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS BLASTING CABLES CONDUCTORS ELECTRICITY ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INSULATORS JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PIPES SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A component of a fluid line for a subsea power umbilical 1 comprises a metal tube 4 having a semiconducting coating 10. In other embodiments, there is provide a loaded reel for use in manufacturing the integrated power umbilical. In other embodiments, there is provided a method of manufacturing a component of a fluid line for a power umbilical, comprising providing a length of metal tube 4 and extruding a coating 10 onto the metal tube, the coating 10 being semiconducting. Optionally, the metal tube is formed from a ferrous metal or steel. Optionally, the semiconductor coating material is an organic semiconductor coating, comprising polyethylene or polypropylene doped with a suitable conducting material, which can be carbon. Optionally, the coating is formed over the external surface of the metal tube by extrusion. Optionally, there is provided a grounding conductor to provide the semiconductor coating with a grounding path. Optionally, the coating material has a resistivity in the range 0.01-100.0 Ω.m.