FIELD: measurement equipment.
SUBSTANCE: invention relates to the facilities to monitor tightness and may be used to detect a leak of heat-transmitting fluid medium, which is stored or transported in a pipeline (10). Substance: pipeline (10) has an electroconductive outer wall (11) and is coated with a layer (13) of insulation fibre material. The layer (13) of the insulation fibre material is in its turn coated with a layer (16) of the conductive fibre material with thickness of material of 5 mm and more. Besides, the conducting fibre material is made of carbon or graphite fibre.
EFFECT: increased efficiency and validity during leak detection.
20 cl, 5 dwg
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