Originally published in 11th Iternational Pipeline Conference 2016, November 10th (Volume 1 Pipeline and Facilities Integrity)
A significant portion of global energy pipeline infrastructure is constructed with pipe materials manufactured using the Electric Resistance Weld (ERW) process. The longitudinal seam of these ERW pipelines may contain manufacturing flaws and anomalies that can grow over time through pressure cycle fatigue, resulting in a pipeline integrity failure. These flaws can be present in both vintage pipe (generally pre-1970) manufactured using a low frequency ERW process, and more modern pipe manufactured using a high frequency ERW process. Such ERW seam anomalies are difficult for current in-line inspection and in-ditch non-destructive testing (NDT) inspection technologies to detect, differentiate, and size. This is driving the industry to better understand current inspection performance and to develop new technologies for ERW seam anomaly.
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