INTEGRITY MANAGEMENT—Conclusion: Procedure, FEA apply to NGL fitness-for-service assessment

A simple economic procedure applied to NGL pipelines can help operators determine—based on the type, shape, and position of any abnormalities detected during periodic magnetic-flux leakage pigging— whether to shut the pipeline for repair or continue operations.The first part of two articles (OGJ, June 9, 2008, p. 80) described the three steps of this procedure: Identification. A magnetic-flux leakage intelligent pig report and ultrasonic Scan B testing located the defect. Quantification. Ultrasonic thickness measurement and Scan B results use gammagraphic inspection to determine the defect’s size and location on the pipe wall. Assessment. A simple finite-element analysis m...

Why Register?

Non-subscribers can only view whitepapers by providing name, home and email address, phone number and other information and comment on/rate articles.

Why Subscribe?

Oil & Gas Journal subscribers with login credentials can access these premium features of OGJ Online:

  • Current Issue – an html version of the current week's issue of Oil & Gas Journal.
  • Past Issues – An Electronic OGJ Archive. A keyword-searchable archive of all issues of Oil & Gas Journal dating back to 1990; also searchable by issue date.
  • Market Journal – a weekly round-up of the oil and gas markets, with observations from leading analysts.
  • Editor's Perspective – a short article of insight and opinion by the Editor of Oil & Gas Journal.
  • OGJ Industry Stats – quick access to current industry statistics from Oil & Gas Journal.
  • OGJ Survey Downloads - quick access to exclusive reports from Oil & Gas Journal.


Subscriber Help or Subscribe

Oil & Gas Journal Subscribers: Have your subscription number (from the mailing label on the cover of your Oil & Gas Journal) and e-mail address ready to set up your online account through Customer Service Assistant.

If you're not an Oil & Gas Journal subscriber, start a subscription and gain access to the subscriber areas of OGJ Online now.

Stay Connected