Unique HSC scenario leads to gas line failure

Tests conducted on a 24-in. section of pipe that had cracked internally revealed a unique combination of forces had led to the failure.Failure analysis and a laboratory program confirmed that failure resulted from hydrogen stress cracking (HSC) around a dent.Plastic deformation of the pipe occurred by a different consolidation of the soil (Marston effect), while cathodic protection generated hydrogen on the pipeline surface. When hydrogen by diffusion reached the more stressed zone after several years, cracking occurred.At the time of 1987 failure, the pipeline transported wet nonaggressive gas, but the crack morphology resembled an environmentally assisted cracking case. Failure analysis...

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