Thinking Outside the Pipe: Comparison of Non-invasive, Non-destructive Condition Assessment Technologies for Distribution Pipe

Utilities are facing a challenge in planning and financing effective pipeline replacement and rehabilitation programs, particularly in systems with older metallic piping subject to corrosion. With reliable condition assessment information, utilities can leave pipes with adequate integrity in service, prevent unnecessary breaks by repairing (or replacing) pipes proactively, tailor renewal methods to match the condition and/or configuration of the pipe, localize the replacement to maximize break reduction-to-cost ratio, and prioritize and schedule pipe renewal work appropriately. This research project will provide utilities with a better understanding of the benefits and limitations of low-cost, non-invasive pipeline condition assessment technologies and how they may be applied to make better distribution pipeline renewal/replacement decisions. The research project will also examine “false positives” and “false negatives” in estimating the limitations of these technologies.