Multiple or stacked crack-like flaws can be found at longitudinal welds on vintage low frequency (LF) ERW pipeline by inspection technologies. These features may be a result of fabrication or degradation during service. The assessment of coplanar anomalies for fitness for service requires the evaluation of interaction, coalescence, and sizing of overall depth and length for multiple and/or stacked linear features. Available industrial codes provide rules to perform interaction and multiple flaw characterization; however, in some instances these general rules may result in more features requiring repairs than is actually required for a pipeline integrity program. This paper reviews interaction rules and models for linear features developed from published codes and industrial research with the objective of identifying areas for further development.
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2016 11th International Pipeline Conference
September 26–30, 2016
Calgary, Alberta, Canada
Conference Sponsors:
- Pipeline Division
ISBN:
978-0-7918-5025-1
PROCEEDINGS PAPER
A Review of Rules and Analysis Models for Interaction of LF-ERW Manufacturing Linear Features in Pipelines
Hao (Andy) Li,
Hao (Andy) Li
Stantec Consulting Ltd., Calgary, AB, Canada
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Jonathan Prescott,
Jonathan Prescott
Stantec Consulting Ltd., Calgary, AB, Canada
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Hong (Kathy) Zhang,
Hong (Kathy) Zhang
Stantec Consulting Ltd., Calgary, AB, Canada
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Arturo Terron Viveros,
Arturo Terron Viveros
Stantec Consulting Ltd., Calgary, AB, Canada
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James Ferguson
James Ferguson
Stantec Consulting Ltd., Calgary, AB, Canada
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Hao (Andy) Li
Stantec Consulting Ltd., Calgary, AB, Canada
Jonathan Prescott
Stantec Consulting Ltd., Calgary, AB, Canada
Hong (Kathy) Zhang
Stantec Consulting Ltd., Calgary, AB, Canada
Arturo Terron Viveros
Stantec Consulting Ltd., Calgary, AB, Canada
James Ferguson
Stantec Consulting Ltd., Calgary, AB, Canada
Paper No:
IPC2016-64688, V001T03A042; 10 pages
Published Online:
November 10, 2016
Citation
Li, H(, Prescott, J, Zhang, H(, Viveros, AT, & Ferguson, J. "A Review of Rules and Analysis Models for Interaction of LF-ERW Manufacturing Linear Features in Pipelines." Proceedings of the 2016 11th International Pipeline Conference. Volume 1: Pipelines and Facilities Integrity. Calgary, Alberta, Canada. September 26–30, 2016. V001T03A042. ASME. https://doi.org/10.1115/IPC2016-64688
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