METHOD FOR DETECTION OF DISRUPTIONS OF INSULATING COVER OF UNDERGROUND PIPELINE Russian patent published in 2005 - IPC

Abstract RU 2263333 C2

FIELD: diagnosis and control.

SUBSTANCE: as source of electromagnetic field of cathode protection of pipeline is used. Depth of position of pipeline axis is determined on basis of magnetic transverse, longitudinal and vertical components of electromagnetic field of current of cathode protection of pipeline. longitudinal electric component of electromagnetic current field of cathode protection is measured and transverse component of electromagnetic field of current of cathode protection on the left and right from pipeline axes. Results of measurements are made normal for depth of pipeline, resistance of environment, surrounding pipeline, current force in pipeline, background components of electromagnetic fields. On basis of heightened values of normal electric components of electromagnetic field of cathode protection current position and size of disruptions of isolating cover of pipeline are detected.

EFFECT: higher efficiency.

2 dwg

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RU 2 263 333 C2

Authors

Krapivskij E.I.

Demchenko N.P.

Alennikov S.G.

Dates

2005-10-27—Published

2003-07-24—Filed