FIELD: physics, measurements.
SUBSTANCE: invention is related to flaw detection of underground pipelines and may be used for manufacturing of control sample with crack of corrosion cracking under stress. Method for manufacturing of control sample for flaw detection of pipelines includes sample cutting and its loading in presence of working medium until crack is produced there. Sample cutting is done from previously operated pipeline in the area of possible crack development on its surface. Direction of sample cutting is selected perpendicularly to cyclic load available in pipeline, and sample loading is carried out during cathode polarization, providing for compliance of potential with the operating one.
EFFECT: increased accuracy of instruments settings and reduced error in performance of flaw detection tests.
1 ex, 1 tbl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| MANUFACTURING METHOD OF SPECIMENS OF HIGH-RATE METAL OF OIL-GAS EQUIPMENT FOR CYCLIC CRACK RESISTANCE TESTING | 2011 |
|
RU2465565C1 |
| IMPROVED METHOD FOR CYCLIC TESTING OF FULL-THICKNESS SAMPLES OF MAIN PIPELINES FOR STRESS CORROSION CRACKING | 2023 |
|
RU2820157C1 |
| METHOD OF SAMPLING HIGH-LOADED METAL OF VESSELS AND APPARATUSES OPERATED IN HYDROGEN SULPHIDE-BEARING MEDIA | 2011 |
|
RU2457458C1 |
| METHOD OF REJECTION AND REPAIR OF UNDERGROUND PIPE LINES | 2016 |
|
RU2639599C2 |
| METHOD OF DETERMINING OPERATING LIFE OF METAL OF PIPELINE | 2013 |
|
RU2536783C1 |
| METHOD OF DETERMINING DURATION OF PERIOD BEFORE FORMATION OF STRESS-CORROSION CRACKS IN STEEL PIPELINES | 2007 |
|
RU2341589C2 |
| METHOD OF DETECTING PIPELINE SECTIONS DISPOSED TO CORROSION CRACKING UNDER STRESSING | 2004 |
|
RU2262634C1 |
| METHOD OF PREVENTING PIPELINE WALLS AGAINST CRACKING | 2005 |
|
RU2295088C1 |
| METHOD FOR EVALUATING THE PROTECTIVE EFFICIENCY OF COMPOSITIONS INHIBITING STRESS CORROSION CRACKING IN PIPE STEELS | 2021 |
|
RU2770844C1 |
| METHOD OF TESTING PIPE STEELS FOR STRESS CORROSION CRACKING | 2015 |
|
RU2582911C1 |
