METHOD FOR DETERMINING THE INTEGRITY OF PIPELINE PROTECTIVE CASINGS AT INTERSECTIONS WITH ROADS AND RAILWAYS Russian patent published in 2022 - IPC F16L58/00 G01V3/08 F17D5/02 

FIELD: pipeline transport.

SUBSTANCE: invention relates to pipeline transport. The method for determining the integrity of the pipeline protective casings at intersections with roads and railways consists in determining the electrical resistance between the pipeline and the protective casing on sections passing through the ends of the protective casing at both ends, when establishing the absence of electrical contact between the protective casing and the pipeline, measuring the resistance of the protective casing, using the pipeline inside the protective casing as a conductor, determining its integrity, measuring the AC strength along the axis of the protective casing, obtaining a graph of the distribution of AC strength along the length of the casing, determining the location of the integrity violation at the place where the AC signal falls on the resulting graph.

EFFECT: improving the reliability of the method for determining the integrity of the protective casings of the pipeline at intersections with roads and railways.

1 cl, 3 dwg