·Table of Contents
·Methods and Instrumentation

Mechanized Inspection of Girth Welds using Ultrasonic Phased Arrays

Noël Dubé
R/D Tech Québec, Canada
Michael Moles
R/D Tech Toronto, Canada
Malcolm Russell
MR Consulting, Nottingham, UK
Ed Ginzel
Materials Research Institute, Waterloo, Canada

1.0 Introduction

2.0 Ultrasonic Girth-Weld Inspections

3.0 Codes

4.0 Ultrasonic Phased Arrays

5.0 Typical Phased-Array, Girth-Weld Inspection System

6.0 Results Using Phased Arrays

7.0 Special Phased-Array Inspection Techniques

8.0 Conclusions


9.0 References

  1. E.A. Ginzel, P. den Boer, and M. Hoff, "Application of Mechanized Ultrasonics to Manually Welded Pipeline Girth Welds", UT Online Workshop, May 1997. http://www.ndt.net/article/wsho0597/ginzel3/ginzel3.htm
    H. Heckhäuser and S. Schultz, "Advanced Technology in Automated Ultrasonic Weld Inspection of Pipeline Girth Welds", Insight, vol 37, no 6, June 1995, p. 440.
    J.A. de Raad and F.H. Dijkstra, "Mechanized Ultrasonic Testing on Girth Welds During Pipeline Construction", Materials Evaluation, August 1997, p. 890.
    N. Dubé, E.A. Ginzel, and M.D.C. Moles, "Customized Ultrasonic Systems for Gas Pipeline Girth Weld Inspections", International Pipeline Conference, Calgary, Alberta, Canada June 7-11, 1998, ASME Paper No. IPC-98-162.
  2. B. Gross, J. O'Beirne, and B. Delanty, "Comparison of Radiographic and Ultrasonic Inspection Methods on Mechanized Girth Welds", Pipeline Technology Conference, Oostende, Belgium, 15-18 October 1990, #14.17.
  3. E.A. Ginzel and R.K. Ginzel, "Study of Acoustic Velocity Variations in Line Pipe Steel", Materials Evaluation, May 1995, pp. 598-603.
  4. ASTM E 1961-98, Standard Practice for "Mechanized Ultrasonic Examination of Girth Welds Using Zonal Discrimination with Focused Search Units", September 1998.
  5. American Petroleum Institute, "Welding of Pipelines and Related Facilities", API Standard 1104, Nineteenth Edition, September 1999.
  6. R/D Tech, Tomoscan FOCUS Ultrasonic Phased Array System Spec Sheet, http://www.rd-tech.com .
  7. M.D.C. Moles, E.A. GinzeL, and N. Dubé, "PipeWIZARD-PA - Mechanized Inspection of Girth Welds Using Ultrasonic Phased Arrays", International Conference on Advances in Welding Technology '99, Galveston, Texas, October 26-28, 1999, sponsored by EWI and AWS.
  8. B. Gross, T. S. Connelly, H. van Dijk, and A. Gilroy-Scott, "Flaw Sizing Using Mechanized Ultrasonic Inspection on Pipeline Girth Welds", ICAWT '99, Galveston, October 26-28, 1999. Also see "Update on the Alliance Pipeline" at the same session.

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