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D. V. Novgorodov, V. G. Rybalko

FEATURES OF THE EVOLUTION OF CORROSION CRACKING IN GAS FLOW LINES

DOI: 10.17804/2410-9908.2019.6.068-076

The paper studies gas flow lines and underground gas pipelines of compressor stations which are susceptible to damage by stress corrosion cracking (SCC). Factors of a technological and operational nature governing the conditions of SCC evolution in existing gas pipelines are noted. Defects of a long growth period are investigated. It has been found that, during operation, the evolution of defects can stop, but it resumes under the effect of high off-design loads. Crack evolution may be caused by seasonal soil movements, repair work, and other factors causing overloads at the tips of stable cracks. A solution is proposed to increase the reliability of pipeline operation by monitoring the stability of the stress state in individual sections.

Acknowledgments: The work was carried out within the framework of the state assignment of FANO of Russia (topic "Diagnostics," № АААА-А18-118020690196-3)

Keywords: gas pipeline, stress state, corrosion cracking, cracks, overload, defect evolution, monitoring

References:

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Article reference

Novgorodov D. V., Rybalko V. G. Features of the Evolution of Corrosion Cracking in Gas Flow Lines // Diagnostics, Resource and Mechanics of materials and structures. - 2019. - Iss. 6. - P. 68-76. -
DOI: 10.17804/2410-9908.2019.6.068-076. -
URL: http://eng.dream-journal.org/issues/2019-6/2019-6_266.html
(accessed: 06/22/2024).

 

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