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Pipeline Mechanical Damage Excavation Process Review and Recommendations

[+] Author Affiliations
Abdelfettah Fredj, Aaron Dinovitzer, Sanjay Tiku

BMT Fleet Technology Limited, Kanata, ON, Canada

Geoff Vignal

Enbridge Pipelines Inc., Edmonton, AB, Canada

Paper No. IPC2014-33618, pp. V004T08A020; 10 pages
doi:10.1115/IPC2014-33618
From:
  • 2014 10th International Pipeline Conference
  • Volume 4: Production Pipelines and Flowlines; Project Management; Facilities Integrity Management; Operations and Maintenance; Pipelining in Northern and Offshore Environments; Strain-Based Design; Standards and Regulations
  • Calgary, Alberta, Canada, September 29–October 3, 2014
  • Conference Sponsors: Pipeline Division
  • ISBN: 978-0-7918-4613-1
  • Copyright © 2014 by ASME

abstract

In order to perform pipeline maintenance it is often necessary to excavate the pipeline. To support excavation safety, the pipeline condition and other factors that can promote failure are considered in establishing a safe excavation process. For pipelines that include mechanical damage features, consideration must be given to the response of the pipe during the excavation process. The combination of previously developed and validated mechanical damage and soil structure interaction numerical simulation techniques have been used to simulate the response of operating pipelines to the excavation process. This paper presents a preliminary overview of the application of these numerical simulation tools to establish a safe excavation process for pipeline systems with mechanical damage features characterized by in-line-inspection tool data. The research work described in this paper considers a range of mechanical damage feature geometries, restraint conditions, burial/excavation conditions, pipe geometries and materials, and internal pressures. As a result of applying this work, preliminary excavation procedure and further research recommendations are made to support mechanical damage maintenance programs.

Copyright © 2014 by ASME
Topics: Pipelines , Damage

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