Stress Corrosion Failure of High-Pressure Gas Pipeline

Incidents of failure due to corrosion/stress corrosion cracking of high-pressure gas pipelines in Pakistan have been observed to occur after about 15–20 years of service. The present paper constitutes the failure analysis of an 18-inch diameter electric resistance-welded gas pipeline. The failure was characterized, on the basis of all the available evidence and the metallurgical examination carried out on the ruptured pipe, as a stress corrosion failure that had initiated at a longitudinal ‘stress raiser’. This stress raiser, which was essentially a manufacturing defect, constituted a longitudinal ‘step’ on the pipe surface that had resulted from the faulty trimming/shaving of the weld flash. The findings of this study, thus, emphasize the need for the care that must be taken during the shaving-off of the weld flash.

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  • Supplemental Notes:
    • Abstract reprinted with permission of Elsevier.
  • Authors:
    • Hasan, F
    • Iqbal, J
    • Ahmed, F
  • Publication Date: 2007-7

Language

  • English

Media Info

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Filing Info

  • Accession Number: 01052088
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 28 2007 12:02PM