RU2013138657A - METHOD FOR IDENTIFYING TRANSVERSE-ORIENTED CORROSION STRESS CRACKING - Google Patents
METHOD FOR IDENTIFYING TRANSVERSE-ORIENTED CORROSION STRESS CRACKING Download PDFInfo
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- RU2013138657A RU2013138657A RU2013138657/06A RU2013138657A RU2013138657A RU 2013138657 A RU2013138657 A RU 2013138657A RU 2013138657/06 A RU2013138657/06 A RU 2013138657/06A RU 2013138657 A RU2013138657 A RU 2013138657A RU 2013138657 A RU2013138657 A RU 2013138657A
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- stress corrosion
- corrosion cracking
- oriented
- detecting
- pipe
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Abstract
1. Способ выявления поперечно-ориентированного коррозионного растрескивания под напряжением, заключающийся в нахождении зон с большими растягивающими напряжениями в нижней части трубопровода (дно оврагов, вогнутые участки складок местности), отличающийся тем, что в отчете по внутритрубной диагностике находят трубы с дефектами потери металла на нижней половине трубы с продольными швами, расположенными близко к 3 и/или 9 часам поперечного сечения в часовых координатах.2. Способ выявления поперечно-ориентированного коррозионного растрескивания под напряжением по п.1, отличающийся тем, что в исполнительной документации (в продольных профилях и сварочных журналах) находят несоответствие проектного и фактического количества вогнутых отводов холодного гнутья.1. A method for detecting transverse-oriented stress corrosion cracking, which consists in finding zones with large tensile stresses in the lower part of the pipeline (bottom of ravines, concave sections of terrain folds), characterized in that pipes with defects of metal loss on the pipe inspection are found the lower half of the pipe with longitudinal seams located close to the 3 and / or 9 o'clock cross-section in hourly coordinates. 2. The method for detecting transversely oriented stress corrosion cracking according to claim 1, characterized in that in the executive documentation (in longitudinal profiles and welding logs) there is a discrepancy between the design and actual number of concave bends of cold bending.
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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RU2013138657/06A RU2013138657A (en) | 2013-08-21 | 2013-08-21 | METHOD FOR IDENTIFYING TRANSVERSE-ORIENTED CORROSION STRESS CRACKING |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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RU2013138657/06A RU2013138657A (en) | 2013-08-21 | 2013-08-21 | METHOD FOR IDENTIFYING TRANSVERSE-ORIENTED CORROSION STRESS CRACKING |
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RU2013138657A true RU2013138657A (en) | 2015-02-27 |
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RU2013138657/06A RU2013138657A (en) | 2013-08-21 | 2013-08-21 | METHOD FOR IDENTIFYING TRANSVERSE-ORIENTED CORROSION STRESS CRACKING |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2638121C1 (en) * | 2017-04-12 | 2017-12-11 | Акционерное общество "Гипрогазцентр" | Method for preventing stress corrosion cracking in underground pipelines |
RU2753112C1 (en) * | 2020-07-03 | 2021-08-11 | Общество с ограниченной ответственностью "Газпром трансгаз Казань" | Method for determining transverse stress corrosion |
-
2013
- 2013-08-21 RU RU2013138657/06A patent/RU2013138657A/en not_active Application Discontinuation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2638121C1 (en) * | 2017-04-12 | 2017-12-11 | Акционерное общество "Гипрогазцентр" | Method for preventing stress corrosion cracking in underground pipelines |
RU2753112C1 (en) * | 2020-07-03 | 2021-08-11 | Общество с ограниченной ответственностью "Газпром трансгаз Казань" | Method for determining transverse stress corrosion |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FA92 | Acknowledgement of application withdrawn (lack of supplementary materials submitted) |
Effective date: 20150406 |