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Inspection of Clad and Plain Carbon Steel Girth Welds on Offshore Caisson Risers Using Semi-Mechanised Ultrasonic Testing (SMUT)

[+] Author Affiliations
Robert J. Conder

Xodus Group Ltd., Aberdeen, UK

Ryan McPherson

Talisman Energy (UK) Ltd., Aberdeen, UK

Ton Kooren

Applus RTD, Rotterdam, The Netherlands

Allan Parlane

Petrology Ltd., Glasgow, Scotland, UK

Paper No. OMAE2008-57087, pp. 85-100; 16 pages
  • ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering
  • Volume 3: Pipeline and Riser Technology; Ocean Space Utilization
  • Estoril, Portugal, June 15–20, 2008
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4820-3 | eISBN: 0-7918-3821-8
  • Copyright © 2008 by ASME


Caisson risers installed through drilling slots are an increasingly common method to add additional riser access to existing oil and gas production platforms. This paper describes the inspection methodology used for two new caisson risers on the Talisman Energy owned Tartan platform in the North Sea. The methodology for qualification of the inspection system for both plain carbon steels and Inconel 625 (UNS N06625) clad carbon steel is described. The offshore performance of the SMUT system is discussed and the time and safety benefits of this system are highlighted.

Copyright © 2008 by ASME



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