This 2021 Edition of the PRCI Pipeline Repair Manual is an updated version of the original manual that was published 1994 and updated in 2006. The 2021 Edition discusses response to anomaly or defect discovery, reviews repair methods, identifies…
New regulations and modifications to existing environmental regulations are currently underway. The natural gas industry has consistently attempted to mitigate the release of greenhouse gases into the atmosphere. Blowdown mitigation represents an…
The two broad categories of fiber-reinforced composite liner repair and deposited weld metal repair technologies were reviewed and evaluated for potential application for internal repair of gas transmission pipelines. Both are used to some extent for…
This project evaluated the performance of various configurations of welded repairs for use in reinforcing improper hot taps. A combination of finite element analysis and full-scale testing was used to evaluate the different repairs. The repairs were…
Corrosion due to cathodic shielding by dis-bonded (failed) shrink sleeves on pipeline field joint Cathodic shielding can be eliminated under failed shrink sleeves by means of removing all (or a significant portion) of the failed sleeve(s).
There is a clearly identified ongoing need to maintain the integrity and the safety of new and existing pipeline facilities. By minimizing coating damage during installation and service, the probability of compromising the pipeline's integrity due to…
Pipeline repair by direct deposition of weld metal, or weld deposition repair, is an attractive alternative to the installation of full-encirclement sleeves or composite reinforcement, particularly for repair of wall loss defects in bend sections and…
The research in this document is aimed at establishing the feasibility of repairing defects, especially corrosion-caused metal loss, by direct deposition of weld metal in pressurized pipelines without removing them from service. While this might seem…
This project focuses specifically on the mechanical properties of a pipeline coating in relation to the need to use imported or site-processed bedding and padding materials to create the pipelines habitat. This project assesses whether mainline and…
The field application of pipeline repair and rehabilitation coatings can be greatly dependent upon the ambient conditions on the day of the scheduled repair. In some cases, such as the application of FBE at girth welds, temporary shelters can be…