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Development and Qualification of Pipeline Welding Procedures for Strain Based Design

[+] Author Affiliations
Martin W. Hukle

Trendsetter Engineering, Inc., Houston, TX

Dan B. Lillig, Brian D. Newbury

ExxonMobil Development Company

John Dwyer

Worrell Lee Associates, Northamptonshire, UK

Agnes Marie Horn

Det Norske Veritas, Baerum, Norway

Paper No. OMAE2007-29581, pp. 217-223; 7 pages
doi:10.1115/OMAE2007-29581
From:
  • ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering
  • Volume 4: Materials Technology; Ocean Engineering
  • San Diego, California, USA, June 10–15, 2007
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 0-7918-4270-3 | eISBN: 0-7918-3799-8
  • Copyright © 2007 by ASME

abstract

This paper reviews the specific testing methodologies implemented for the qualification of mechanized pulsed gas metal arc welding (PGMAW) procedures for strain based design applications. The qualified welding procedures were used during recent construction of an offshore pipeline subject to potential ice scour with an initial design target of 4% tensile strain capacity. This paper addresses the integrated development of linepipe specifications, large scale validation testing, weld procedure development, and finally, the verification of robustness through full scale pressurized testing of actual girth welds on project pipe material. The qualification sequence, from linepipe specification development through final full scale girth weld proof test is described.

Copyright © 2007 by ASME
Topics: Welding , Design , Pipelines

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