March 2017, Vol. 244, No. 3

Features

Risk Assessment in Management of Environmental SCC of Pipelines

Many pipeline operators’ first significant experience of stress corrosion cracking (SCC) is dealing with the aftermath of an unexpected failure. The operator’s priority then is to repair/replace the affected section and return the pipeline to full service. However, experience shows that SCC rarely occurs in isolation, which gives rise to doubts regarding the feasibility of continued safe operation. In some cases, this uncertainty has resulted in operators having to accept significant reductions in operating pressure for extended periods or even permanently. A return to full service is contingent upon the operator being able to demonstrate that the pipeline is fit for service, that any resi

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