| 摘要 |
FIELD: pipeline engineering. ^ SUBSTANCE: system comprises main and transient signal conductors in the heat-insulation layer of main pipelines, main signal conductor in the heat-insulation layer of pipeline branches, terminals at the point of control for commutation of signal conductors and connection of control devices, connecting cables that connect the signal conductors with the terminals at the control points, signal conductors at the sites of breaks in the heat-insulation layer, signal conductors in the adjacent members of pipelines, and grounding. The main signal conductor is mounted in the heat-insulation layer from the right with respect to the direction of fluid flow, transient signal conductor is mounted from the left, and, in the branches, the main signal conductor is connected in series with the main signal conductor of the main pipeline. The method comprises testing the electric resistance of the heat insulation by supplying voltage to the meter of the control device and the object to be controlled and measuring the resistance of heat insulation. ^ EFFECT: expanded functional capabilities. ^ 3 cl, 21 dwg
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