DETECTION APPARATUS AND METHOD
First Claim
1. A detection apparatus arranged to detect defects within a flexible pipe body, the detection apparatus comprising:
- an electrical power supply arranged to couple between, and to supply current to, first and second electrically conductive members extending at least partially along the length of a flexible pipe body and electrically isolated from one another except for being electrically connected at a point remote from the power supply; and
a first meter arranged to detect variation between the current flowing in each electrically conductive member;
wherein detected variation is indicative of a pipe body defect causing an Earth fault along one of the electrically conductive members.
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Accused Products
Abstract
A detection apparatus arranged to detect defects within a flexible pipe body. The detection apparatus comprises an electrical power supply and a first meter. The electrical power supply is arranged to couple between, and to supply current to, first and second electrically conductive members extending at least partially along the length of a flexible pipe body and electrically isolated from one another except for being electrically connected at a point remote from the power supply. The first meter is arranged to detect variation between the current flowing in each electrically conductive member. Detected variation is indicative of a pipe body defect causing an Earth fault along one of the electrically conductive members. A corresponding method, a pipeline apparatus including the detection apparatus and a method of forming the pipeline apparatus are also disclosed.
42 Citations
16 Claims
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1. A detection apparatus arranged to detect defects within a flexible pipe body, the detection apparatus comprising:
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an electrical power supply arranged to couple between, and to supply current to, first and second electrically conductive members extending at least partially along the length of a flexible pipe body and electrically isolated from one another except for being electrically connected at a point remote from the power supply; and a first meter arranged to detect variation between the current flowing in each electrically conductive member; wherein detected variation is indicative of a pipe body defect causing an Earth fault along one of the electrically conductive members. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16)
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11. A method of detecting defects within a flexible pipe body, the method comprising:
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coupling an electrical power supply between first and second electrically conductive members extending at least partially along the length of a flexible pipe body and electrically isolated from one another except for being electrically connected at a point remote from the power supply; supplying current form the power supply to the first and second electrically conductive members; and detecting variation between the current flowing in each electrically conductive member; wherein detected variation is indicative of a pipe body defect causing an Earth fault along one of the electrically conductive members.
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Specification