Customized Ultrasonic Systems for Gas Pipeline Girth Weld Inspections PUBLIC ACCESS

[+] Author Affiliations
Michael D. C. Moles

R/D Tech, Mississauga, ON, Canada

Noël Dubé

R/D Tech, Quebec City, QC, Canada

Ed A. Ginzel

Materials Research Institute, Waterloo, ON, Canada

Paper No. IPC1998-2074, pp. 637-643; 7 pages
  • 1998 2nd International Pipeline Conference
  • Volume 2: Design and Construction; Pipeline Automation and Measurement; Environmental Issues; Rotating Equipment Technology
  • Calgary, Alberta, Canada, June 7–11, 1998
  • Conference Sponsors: Pipeline Division
  • ISBN: 978-0-7918-4023-8
  • Copyright © 1998 by ASME


Gas pipeline ultrasonic inspection girth weld systems have been well established for typical Canadian conditions, primarily through the efforts of TCPL and NOVA. However, the specific weld profiles, wall thickness, environment and operating conditions found in Canada do not necessarily represent girth weld inspections elsewhere. This paper describes some different inspection conditions, and some of the possible solutions, which may or may not have been implemented to date. For example, the extreme Canadian weather may require heating transducer wedges, or using dummy wedges to measure temperature. Sandy or salty conditions may require different designs and materials. Different weld profiles will require different ultrasonic set-ups, as will different inspection specifications. For flexibility, it is possible to design expandable inspection heads with replaceable probe modules, and to include extra ultrasonic transducers for TOFD or additional scans. Tight time constraints can lead to quick-release levers for speedy head changes, as well as modular, replaceable components. Since the operator is critical in the inspection, a number of software additions can be added to speed inspection, interpretation and set-up. For example, defect locations can be automatically displayed on the weld profile to aid interpretation. A table of defects can be shown so the operator can click on a selected defect to automatically display the appropriate scan region. Defects can be analyzed automatically by length and amplitude to determine accept/reject. Calibration set-up for a particular transducer can be recalled simply by clicking on the appropriate zone in the weld display. Automated recording and acceptance of calibration scans can be performed.

Copyright © 1998 by ASME
Topics: Inspection , Pipelines
This article is only available in the PDF format.



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In