NDTnet - May 1997, Vol.2 No.05

APPLICATION OF MECHANIZED ULTRASONIC INSPECTION TO MANUALLY WELDED PIPELINE GIRTH WELDS

E.Ginzel, P.den Boer, M.Hoff *


Presented on the UTonline Application Workshop in May '97

Abstract:

Background:

Techniques Used

Display of Data

Code Developments Required

Flaw TypeDepth RangeAcceptable Length
UT with ECA
RT Flaw and length
Planar Surface flaws0.000 in to 0.144 in
0.145 in to 0.289 in

12.00 in
2.31 in

Incomplete penetration 1in
Planar buried flaws0.000 in to 0.144 in
0.145 in to 0.289 in

12.00 in
2.31 in

Incomplete fusion 1in
Slag (Table A-1)0.144 in2.31 inElongated slag 2in
Isolated <1/8" wide 0.5in

Unrepaired Burnthrough (Table A-1)0.144 in1.15 inIsolated RT density greater than pipe 0.25in
Arc Burns0.063 in0.31 inAs directed by company

Conclusions

Acknowledgments

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, ../../../index.html, 1996
  4. R. Denys, Defect Acceptance Level for Ultrasonically Inspected Girth Welds, University of Ghent (Belgium), 1995, unpublished document.

About the authors

Merv Hoff is the senior NDT coordinator for TransCanada Pipelines.

TransCanada Pipelines Ltd.
111 5th Avenue SE
Calgary, Alberta
Canada
T2P 4K5
tel. (403) 267-6401
fax (403) 267-6242
email merv_hoff@tcpl.ca

Peter den Boer is manager of Automated NDT inspections for RTD Quality Services Inc.

RTD Quality Services Inc.
1431 70 Avenue
Edmonton, Alberta
Canada
T6P 1N5
tel. (403) 440-6600
fax (403) 440-2538
email peter_b@rtdquality.com

Ed Ginzel is an independent consultant with the Materials Research Institute.

Materials research Institute
368 Lexington Road
Waterloo, Ontario
Canada
N2K 2K2
tel. (519) 886-5071
fax (519) 886-8363
email eginzel@mri.on.ca

The Paper was presented on the UTonline Application Workshop in May '97
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