Non-welded repairs, such as composite systems and clamps with elastomer seals, may degrade over the life of the pipeline. If a repair is not expected to last as long as the pipe under normal operating and maintenance conditions, the US Department of Transportation (DOT) Pipeline and Hazardous Materials Safety Administration (PHMSA) does not consider that repair to be permanent.
This project explored best practices for making non-welded repairs permanent, including a litera-ture review and experimental program to extend the life of clamps and composite repairs. The target audience is integrity...
This project explored best practices for making non-welded repairs permanent, including a litera-ture review and experimental program to extend the life of clamps and composite repairs. The target audience is integrity engineers and personnel involved in field repairs.
The document aims to answer the “what now” question with industry best practice guidance if a non-welded repair is not assessed to have a life as long as the asset. This will facilitate a reduction in Greenhouse Gas (GHG) emissions from a potential leak of a non-welded repair, allowing oper-ators to plan for their replacement or remediation.
This research was a recommended next step following PRCI Project MATR-3-15A, Assessment of Non-Welded Pipeline Repair Methods to Reduce Pipeline Blowdowns.