Outlining a Structured Approach to Inline Inspection

March 2017, Vol. 244, No. 3

By Scott Riccardella and Michael Fraser, Structural Integrity Associates, Inc., and Charlie Hall and Jay Keldsen, MESA

Recently proposed regulations in the Notice of Proposed Rulemaking (NPRM), titled “Safety of Gas Transmission and Gathering Pipelines,” combined with recent advancements in inline inspection (ILI) technology, are likely to cause an increase in the application of ILI as an integrity-assessment method of oil and gas pipelines. This in turn will expand the frequency and type of pipeline defects that will be encountered. Lines previously considered “unpiggable” will be retrofitted and be capable of accommodating new ILI tools. Pipeline operators previously reliant on direct assessment as their primary assessment methodology will increasingly turn to ILI…

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