FIELD: measurement technology.
SUBSTANCE: method provisions the measurement of the magnetic field induction above the pipeline centreline and the pipeline depth with a certain step selected in view of the pipeline depth, the location of the sources of magnetic field anomalies is determined. From the design or operational documentation the additional information on the location of circular welding joints is obtained, and by calculations the magnetic field induction generated by the pipeline elements, limited by circular welding joints, is determined. By the deviation of the values obtained after the measurement the magnetic field induction of the pipeline from the design values the defects are identified.
EFFECT: improvement of reliability of detection of defects of buried pipeline metal without excavation.
1 tbl, 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD TO DETERMINE DAMAGE OF SECTIONS OF UNDERGROUND PIPELINE MADE FROM FERROMAGNETIC MATERIAL | 2013 |
|
RU2538072C1 |
| METHOD OF POSITIONING OF ANNULAR WELDING JOINTS OF UNDERGROUND STEEL PIPELINE | 2014 |
|
RU2563656C1 |
| METHOD FOR NON-CONTACT DETECTION OF POSITION AND TYPE OF DEFECTS OF METALLIC STRUCTURES AND DEVICE FOR REALIZATION OF SAID METHOD | 2001 |
|
RU2264617C2 |
| METHOD OF DIAGNOSTIC CONTROLLING TECHNICAL PARAMETERS OF UNDERGROUND PIPELINE | 2016 |
|
RU2633018C2 |
| METHOD OF DIAGNOSING TECHNICAL STATE OF UNDERGROUND PIPELINES (VERSIONS) | 2009 |
|
RU2453760C2 |
| METHOD OF MONITORING OF TECHNICAL STATE OF PIPELINE AND SYSTEM FOR ITS IMPLEMENTATION | 2014 |
|
RU2563419C2 |
| METHOD OF REMOTE MAGNETOMETRY FOR DIAGNOSTICS OF PIPELINES AND DEVICE FOR ITS REALISATION | 2011 |
|
RU2506581C2 |
| METHOD FOR IN-PIPE DIAGNOSTICS OF PIPELINE TECHNICAL STATE | 2018 |
|
RU2697008C1 |
| METHOD AND DEVICE FOR CONTACTLESS DIAGNOSTICS OF TECHNICAL CONDITION OF UNDERGROUND PIPELINES | 2014 |
|
RU2568808C2 |
| MODE OF CONTROL AND DETECTION OF DEFECTS IN PIPELINES OUT OF FERROMAGNETIC MATERIALS | 2005 |
|
RU2294482C1 |
