For the better part of the past 15 years composite materials have been used to repair corrosion in high pressure gas and liquid transmission pipelines. This method of repair is widely accepted throughout the pipeline industry because of the extensive evaluation efforts performed by composite repair manufacturers, operators, and research organizations. Pipeline damage comes in different forms, one of which involves dents that include plain dents, dents in girth welds and dents in seam welds. An extensive study has been performed over the past several years involving multiple composite manufacturers who installed their repair systems on the above mentioned dent types. The primary focus of the current study was to evaluate the level of reinforcement provided by composite materials in repairing dented pipelines. The test samples were pressure cycled to failure to determine the level of life extension provided by the composite materials relative to a set of unrepaired test samples. Several of the repaired dents in the study did not fail even after 250,000 pressure cycles were applied at a range of 72% SMYS. The results of this study clearly demonstrate the significant potential that composite repair systems have, when properly designed and installed, to restore the integrity of damaged pipelines to ensure long-term service.
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2010 8th International Pipeline Conference
September 27–October 1, 2010
Calgary, Alberta, Canada
Conference Sponsors:
- International Petroleum Technology Institute and the Pipeline Division
ISBN:
978-0-7918-4420-5
PROCEEDINGS PAPER
Repair of Dents Subjected to Cyclic Pressure Service Using Composite Materials
Chris Alexander,
Chris Alexander
Stress Engineering Services, Inc., Houston, TX
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Julian Bedoya
Julian Bedoya
Stress Engineering Services, Inc., Houston, TX
Search for other works by this author on:
Chris Alexander
Stress Engineering Services, Inc., Houston, TX
Julian Bedoya
Stress Engineering Services, Inc., Houston, TX
Paper No:
IPC2010-31524, pp. 781-789; 9 pages
Published Online:
April 4, 2011
Citation
Alexander, C, & Bedoya, J. "Repair of Dents Subjected to Cyclic Pressure Service Using Composite Materials." Proceedings of the 2010 8th International Pipeline Conference. 2010 8th International Pipeline Conference, Volume 1. Calgary, Alberta, Canada. September 27–October 1, 2010. pp. 781-789. ASME. https://doi.org/10.1115/IPC2010-31524
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