FIELD: pipeline engineering.
SUBSTANCE: method comprises measuring voltage drop in soil by means of two electrodes, determining the depth of pipeline at the place of measurements, measuring the specific electric resistance of soil above the pipeline, and determining the value of current at the output of two units for cathode protecting, minimum distance from the ground anode to the cathode protecting units, and distance from the site of measurements to the site of connection of the cathode protecting units to the pipeline. The area of the damage is calculated from the formula proposed.
EFFECT: enhanced reliability.
3 dwg, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR DETERMINING DEGREE OF PROTECTION OF PIPELINES | 0 |
|
SU998584A1 |
| DETECTION METHOD OF COATING STRIPPINGS OF UNDERGROUND PIPELINES | 2008 |
|
RU2472060C2 |
| METHOD OF DETERMINATION OF COORDINATES OF DAMAGE IN UNDERGROUND PIPE LINE | 1993 |
|
RU2076989C1 |
| METHOD FOR DETECTION OF DISRUPTIONS OF INSULATING COVER OF UNDERGROUND PIPELINE | 2003 |
|
RU2263333C2 |
| METHOD OF MAKING ANODE GROUNDING | 2018 |
|
RU2695101C1 |
| CATHODE JOINT PROTECTION METHOD FROM ELECTROCHEMICAL CORROSION OF RELATED UNDERGROUND STEEL STRUCTURES IN AGGRESSIVE ENVIRONMENT | 2015 |
|
RU2628945C2 |
| METHOD OF ESTIMATING TECHNICAL CONDITION OF INSULATING COATING OF UNDERGROUND PIPELINE | 2016 |
|
RU2626609C1 |
| METHOD OF UNDERGROUND STRUCTURE STEEL SECTION PROTECTION AGAINST ELECTROCHEMICAL CORROSION IN AGGRESSIVE ENVIRONMENT | 2015 |
|
RU2609121C2 |
| METHOD FOR DETERMINING DEFECTS OF HYDRO-ISOLATION COVER AND CORROSION DAMAGE OF EXTERNAL SURFACES OF UNDERGROUND AND UNDERWATER PIPELINES | 2006 |
|
RU2319139C2 |
| METHOD FOR INTEGRATED CONTACTLESS GROUND TECHNICAL DIAGNOSTICS OF UNDERGROUND PIPELINES | 2015 |
|
RU2614414C1 |
