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Development of a Dual-Diameter 10”/12” High Resolution Ultrasonic (WM) Tool

[+] Author Affiliations
Patrick Viltart, François Jacquiot

Trapil, Gennevilliers Cedex, France

Paper No. IPC2004-0132, pp. 1021-1025; 5 pages
  • 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


Trapil is Europe’s leading refined product pipeline operator, with approximately 4,700 kilometers of pipeline in three networks in France. The Le Havre-Paris network has a number of dual-diameter 10” and 123/4 ” seamless lines in the Paris region. Built in the 1950s and 1960s, they are now located in heavily-populated areas where excavation to assess defects or perform repairs is difficult. Best in-line inspection practice for this type of line recommends the use of ultrasonic tools because of their depth-sizing accuracy and detection capabilities. The need for a dual-diameter, high-resolution ultrasonic tool to survey six 10”–123/4 ” lines prompted Trapil to develop its own tool offering a variety of benefits, such as using the RSTRENG effective area method to perform fitness-for-purpose calculations prior to excavation and determining the shape of dents.

Copyright © 2004 by ASME



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