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PPSA Newsletter

February 2024 Edition

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The unreasonable effectiveness of comparing successive in-line inspections to determine corrosion growth

Presented by

Jed Ludlow, T. D. Williamson


About the presentation

The practice of estimating corrosion growth on a pipeline by comparing successive in-line inspections (ILI) is well established in the industry. More specifically, many operators have found that comparing successive magnetic flux leakage (MFL) inspections provides a very effective means to identify growing corrosion, especially when the same ILI system is used for both inspections. This presentation will describe the unique benefits of MFL signal-to-signal comparisons for assessing corrosion growth and provide a technical justification for why they are even more effective than we might expect them to be given the typical anomaly sizing accuracy of MFL inspection systems. These comparisons can pinpoint instances of growing corrosion even when spatially interspersed with corrosion that is no longer growing.

About the presenter

Jed Ludlow, who joined T.D. Williamson in 2003, has more than 25 years of experience in multidisciplinary engineering roles across the energy, healthcare, medical device and aerospace industries. His current specialty is the application of data science techniques to solve pipeline integrity problems. He has broad experience bringing complex engineering systems from concept to successful product. Jed holds bachelor’s and master’s degrees in mechanical engineering.

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