ILI Metal Loss Growth Analysis: Pipe Joint vs. Anomaly to Anomaly

December 2016, Vol. 243, No. 12

As inline inspection continues to grow in popularity for assessing steel pipelines, new automated tools and techniques will continue to be developed for analysis and management of results. PHMSA guidance and FAQs now state that a pipeline operator must consider previous assessments when developing mitigation plans and also contain a requirement to develop a corrosion rate that can be applied to anomalies to support reassessment interval calculations. Specifically, CFR 192 protocol F.01 and F.04, ASME B31.8S-Appendix A1.5, and API 1160 section 10 discuss the requirement to include previous assessment data in the response analysis. This…

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