Stress corrosion cracking (SCC) can occur on the soil side of buried natural gas pipelines when the coating breaks down and ground water comes into contact with the pipe surface. A neutral solution and a transgranular crack morphology have been identified with recent field cracking in Canada. A series of experiments have been conducted on fatigue pre-cracked specimens to investigate this type of SCC. Crack growth has been monitored with a direct current potential drop system and fractographic examination. The experimental system developed to investigate the growth of large stress corrosion cracks under relevant field conditions is presented and discussed.
- Pipeline Division
Stress Corrosion Crack Growth of Pipeline Steels in NS4 Solution
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Plumtree, A, & Lambert, SB. "Stress Corrosion Crack Growth of Pipeline Steels in NS4 Solution." Proceedings of the 1996 1st International Pipeline Conference. Volume 1: Regulations, Codes, and Standards; Current Issues; Materials; Corrosion and Integrity. Calgary, Alberta, Canada. June 9–13, 1996. pp. 565-571. ASME. https://doi.org/10.1115/IPC1996-1861
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