July 2015, Vol. 242, No. 7

Q&A

Pipeline Stress Corrosion Cracking: Detection and Control

Corrosion of underground natural gas and liquid petroleum pipelines occurs in a variety of forms and requires specialized mitigation methods to detect and control. First identified in the 1960s, stress corrosion cracking (SCC) is a form of corrosion that results in clusters or colonies of cracks on the external surface of the affected pipeline. According to the federal Pipeline & Hazardous Materials Safety Administration (PHMSA), the majority of pipeline incidents caused by SCC are found on natural gas pipelines rather than hazardous liquid pipelines. However, SCC can manifest itself wherever the right combination of factors exists. On behalf of Pipeline & Gas Journal, NACE Inte

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