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Pre-Assessment is Key to Success for Direct Assessment in Integrity Management Programs

[+] Author Affiliations
Alberto Valdes, Richard McNealy

GE Energy

Paper No. IPC2004-0176, pp. 1121-1125; 5 pages
doi:10.1115/IPC2004-0176
From:
  • 2004 International Pipeline Conference
  • 2004 International Pipeline Conference, Volumes 1, 2, and 3
  • Calgary, Alberta, Canada, October 4–8, 2004
  • Conference Sponsors: International Petroleum Technology Institute
  • ISBN: 0-7918-4176-6 | eISBN: 0-7918-3737-8
  • Copyright © 2004 by ASME

abstract

Direct Assessment is allowed under the new Gas Pipeline Integrity Management Rules published by the Office of Pipeline Safety as an assessment method subject to specific applicability restrictions, direct examination criteria and restrictions to re-inspection intervals. The final developed costs for implementing direct assessment is largely dependent upon the extent of direct examination that in turn is a function of the pipeline condition and actual threats discovered and validated. Effective utilization of Direct Assessment within an Integrity Management Program is dependent upon the recognition of the value inherent in the Pre-Assessment Stage of the Direct Assessment Process as defined by the Rule, in which, threats are predicted, applicability confirmed and as a result of data and risk analysis, it is possible to estimate the condition of the pipeline to determine if the use of Direct Assessment is a practical consideration as well as permitted under the Gas Pipeline Integrity Management Rule.

Copyright © 2004 by ASME

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