A leak detection system for a membrane is disclosed. The system includes a non-permeable membrane; a plurality of printed sensors configured to obtain membrane measurements at a plurality of locations of the membrane; and a control circuit.

A pipeline apparatus comprising a pipe body. The pipe body includes an annular cavity between annular innermost and outermost fluid impermeable barrier layers. The pipe body further includes a plurality of armour wires which extend along at least part of the length of the pipe body in the annular cavity. The plurality of armour wires include a first armour wire which is electrically isolated from the other armour wires along at least part of the length of the armour wires. The pipe body also includes a measurement device which is arranged to electrically couple to the first armour wire at a first end of the pipe body. The measurement device is arranged to measure the electrical impedance of the first armour wire, wherein variation of the electrical impedance of the first armour wire is indicative of a defect of the first armour wire.

Techniques for implementing and/or operating a testing system that includes a pipe segment, which includes tubing having an inner layer that defines a pipe bore, an intermediate layer including electrically conductive material implemented around the inner layer, and an outer layer implemented around the intermediate layer, and a return wire embedded within the tubing. The testing system includes a signal generator that supplies an electrical test signal to the electrically conductive material, a sensor electrically coupled to the return wire, in which the sensor determines a sensor signal indicative of an actual electrical return signal received from the return wire in response to supply of the electrical test signal, and a control sub-system communicatively coupled to the signal generator and the sensor, in which the control sub-system determines an integrity state of a pipeline in which the pipe segment is deployed based at least in part on the sensor signal.

Carbon nanotubes, graphene nanoplatelets, and/or metal oxides are incorporated in a polymer to form a sensing element that may be applied on to a surface for sensing hydrocarbon leakage, mechanical stress, and/or temperature change of a hydrocarbon transportation and/or storage structure. Electrical signals from the sensing element are processed to check for indicators of leakage, stress and/or temperature change.

Described embodiments provide a flat conductive fluid sensor cable capable of manufacture in long lengths comprising a flexible substrate, two or more flat conductors, and a fluid-permeable cover material arranged to allow a conductive fluid to form an electrically conductive path between the two or more conductors when conductive fluid contacts the conductive fluid sensor cable.

The present invention provides a leakage detection cable and a method for manufacturing the same, and the leakage detection cable detects a leaking liquid and includes: an electric wire core which includes one or more conductive wires, and a sheath layer that covers the one or more conductive wires; a detection unit which is coupled in a longitudinal direction of a surface of the electric wire core; and a first braided layer which is braided with non-conductive fibers and covers the detection unit, in which the detection unit has a predetermined resistance value that is proportional to a length, and reacts with the liquid such that an output electric current value is changed.

The present invention relates to a hose line (1) for transporting abrasive media with an electrically conductive reinforcing element (5) running in or on the hose wall (2) and extending in the hose direction (6), wherein an insert (7) made of electrically conducting material is at least partially embedded in the hose wall (2) and extends in the hose direction (6) at a distance from the reinforcing element (5).

The present disclosure relates to a tube structure comprising an inner tube of metal and an outer tube of metal, wherein the inner tube extends in the outer tube, and wherein either the inner tube and the outer tube are mechanically tight fitted over the entire length of the inner tube, at least one space in a radial direction of the tube structure in the form of a groove extends at least in an outer surface of the inner tube or in an inner surface of the outer tube, and the at least one space extends in a longitudinal direction of the inner tube and over an entire longitudinal extension of the inner tube, or a spacer tube is located between the inner tube and the outer tube, the inner tube, the outer tube and the spacer tube are mechanically tight fitted over the entire length of the spacer tube, the spacer tube comprises at least one space in the form a slit extending in a radial direction of the tube structure from an outer surface of the inner tube to an inner surface of the outer tube, the at least one space extends in a longitudinal direction of the spacer tube and over an entire longitudinal extension of the spacer tube, and wherein the at least one space is at least partially filled with a thermal interface material providing a thermal contact between the outer tube and the inner tube.

The invention relates to a leak detector (10) for detecting leaked liquid. The leak detector (10) comprises a flexible and elongate fastener (12) configured to fit around a liquid containing pipe to thereby attach the leak detector to the liquid containing pipe. The leak detector also comprises a leak sensor and a housing (14) containing electrical circuitry. The leak sensor (is) comprised in at least one of the fastener and the housing. The leak sensor is configured to sense liquid leaking from the liquid containing pipe with the electrical circuitry being operative to detect a leak in dependence on an output from the leak sensor. The leak detector is configured such that the housing (14) and the fastener (12) are abreast.

The present invention relates to a method for identifying a leakage in a conduit in which a fluid flows. Said method allows to identify a leakage in said conduit based on the mechanical deformation of a cable comprising inside at least one optical fiber, at a plurality of predetermined points of said cable, when said cable is arranged tensioned inside said conduit. The present invention also relates to a system for identifying a leakage in a conduit.