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Engineering and Ultrasonic Tool Run in a Natural Gas Pipeline to Detect SCC

[+] Author Affiliations
Shani M. Steinhubl, Derrick R. Mann

TransGas Limited, Regina, Saskatchewan, Canada

Paper No. IPC2008-64510, pp. 761-767; 7 pages
  • 2008 7th International Pipeline Conference
  • 2008 7th International Pipeline Conference, Volume 2
  • Calgary, Alberta, Canada, September 29–October 3, 2008
  • Conference Sponsors: International Petroleum Technology Institute and the Pipeline Division
  • ISBN: 978-0-7918-4858-6 | eISBN: 798-0-7918-3835-8
  • Copyright © 2008 by ASME


Stress Corrosion Cracking (SCC) is a major integrity threat for many gas and oil pipeline operators. Once SCC is detected on a pipeline, if the severity of the SCC is determined to be class III or IV, it is the operator’s responsibility to ensure that the risk of a SCC failure is adequately mitigated. This paper discusses several design strategies implemented by TransGas for the purpose of this UT ILI run including: designing a custom launcher to facilitate easy insertion of batching pigs, UT ILI tool, and batching liquid; development and use of a flow / speed control system utilizing pressure differential readings from orifice meters, as well as many of the logistical challenges associated with the project.

Copyright © 2008 by ASME



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