NDTnet 1998 April, Vol.3 No.4

TOFD Enhancement to Pipeline Girth Weld Inspection

Edward Ginzel, Henk van Dijk, Merv Hoff *

TABLE OF CONTENTS

Abstract

Introduction

Codes

TOFD Principles

Pipeline Welding Defects

TOFD vs. Amplitude & Time-of-Flight Data

Illustrations of defects

Summary

Acknowledgements:

References

  1. E.Ginzel & R.Ginzel, B.Gross, M.Hoff, P.Manuel, Developments in Ultrasonic Inspection for Total Inspection of Pipeline Girth Welds, 8th Symposium on Pipeline Research, Houston, Texas, August 1993
  2. Glover et al, Inspection and Assessment of Mechanized Pipeline Girth Welds, Proceedings: Weldtech 88, London, UK, 1988
  3. E.Ginzel, Further Developments In Ultrasonic Inspection of Pipeline Girth Welds, UT Online Journal, http://www.ultrasonic.de, 1996
  4. B.Gross et al, Pipeline Technology Conference, Ostende, Belgium, 1990
  5. J.A.de Raad, R. van Agthoven, Mechanical Ultrasonic Test Systems for Pipelines Welds, Proceedings: International Conference on Pipeline Inspection, Edmonton, Canada, 1983
  6. J.A.de Raad, High Speed Ultrasonic Inspection of Field Girth Welds During Pipeline Construction, Pipeline Technology Conference, Ostende, Belgium, 1990
  7. E.Ginzel, P. den Boer, Merv Hoff, Application of Mechanised Ultrasonic Inspection to Manually Welded Pipeline Girth Welds, UT Online Journal, http://www.ndt.net, Vol. 2 No. 5 (May 1997)
  8. The British TOFD standard BS 7706: Guide to Calibration and setting-up of the Ultrasonic Time of Flight diffraction (TOFD) technique for defect detection, location and sizing of flaws. Review NDTnet Vol. 2 No. 9 (Sep 1997)

Authors

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Copyright © Rolf Diederichs, rd@ndt.net 1. Apr 1998
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