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Automated Ultrasonic Inspection of Pressure Vessel Welds

[+] Author Affiliations
Michael Moles

R/D Tech, Mississauga, ON, Canada

Simon Labbé

R/D Tech, Québec, PQ, Canada

Paper No. PVP2004-2810, pp. 25-29; 5 pages
  • ASME/JSME 2004 Pressure Vessels and Piping Conference
  • Recent Advances in Nondestructive Evaluation Techniques for Material Science and Industries
  • San Diego, California, USA, July 25–29, 2004
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4679-2
  • Copyright © 2004 by ASME


ASME Code Case 2235 now permits automated ultrasonic testing (AUT) instead of radiography for vessels 0.5” (12.7 mm) or greater. Ultrasonic testing has significant advantages over radiography: no safety hazard so no disruption of production; inspection as soon as component cools; rapid feedback; defect vertical sizing for Fitness-For-Purpose applications; tailored inspections. ASME CC 2235 permits a variety of inspection techniques based on pulse-echo and Time-Of-Flight Diffraction (TOFD), provided a Performance Demonstration is achieved. This paper describes a number of AUT systems which fulfill the ASME code case. These AUT systems range from a portable phased array system (Omniscan) for low cost and convenience, through conventional systems based on TOFD (μ-Tomoscan), general phased array systems (Tomoscan III) to premium systems with multiple NDE approaches. With such a variety of technologies and costs, AUT systems can be tailored to the client’s needs.

Copyright © 2004 by ASME



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