In-Line Inspections using magnetic flux leakage (MFL) and the Ultrasonic (UT) intelligent pigs are the most common tools used to assess the integrity of pipelines. But, both MFL and UT inspection results are subject to various sources of uncertainties which must be quantified and accounted for in the integrity assessment of the inspected pipeline. A series of pull-through tests (PTT) of seven MFL tools and two UT tools from five service providers was performed on a 12-inch diameter pipe containing pre-existing internal corrosion defects of various length, width, and depth, and located in a variety of circumferential and longitudinal positions. The results of these tests are used to quantify the detectability statistics and the sizing uncertainties of the different tools for future use in developing calibrated probabilistic models for reliability based inspection, quantitative risk assessment and life extension studies for pipelines. The results of the MFL tools were presented in 2012 OMAE conference and this paper presents the results of the two UT tools.
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ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering
June 9–14, 2013
Nantes, France
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-5535-5
PROCEEDINGS PAPER
Characterization of the Uncertainties in the Inspection Results of Ultrasonic Intelligent Pigs
Mamdouh M. Salama,
Mamdouh M. Salama
ConocoPhillips Company, Houston, TX
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Bruce J. Nestleroth,
Bruce J. Nestleroth
Battelle, Columbus, OH
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Marc A. Maes,
Marc A. Maes
Blade Energy Partners, Calgary, AB, Canada
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Chris Dash
Chris Dash
ConocoPhillips Company, Bartlesville, OK
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Mamdouh M. Salama
ConocoPhillips Company, Houston, TX
Bruce J. Nestleroth
Battelle, Columbus, OH
Marc A. Maes
Blade Energy Partners, Calgary, AB, Canada
Chris Dash
ConocoPhillips Company, Bartlesville, OK
Paper No:
OMAE2013-11168, V003T03A044; 5 pages
Published Online:
November 26, 2013
Citation
Salama, MM, Nestleroth, BJ, Maes, MA, & Dash, C. "Characterization of the Uncertainties in the Inspection Results of Ultrasonic Intelligent Pigs." Proceedings of the ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. Volume 3: Materials Technology; Ocean Space Utilization. Nantes, France. June 9–14, 2013. V003T03A044. ASME. https://doi.org/10.1115/OMAE2013-11168
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