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DNV RP-F201: Recommended Practice for Design of Titanium Risers

[+] Author Affiliations
Bente H. Leinum, Elisabeth H. To̸rstad

Det Norske Veritas, Ho̸vik, Norway

Paper No. OMAE2002-28474, pp. 349-354; 6 pages
  • ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering
  • 21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 3
  • Oslo, Norway, June 23–28, 2002
  • Conference Sponsors: Ocean, Offshore, and Arctic Engineering Division
  • ISBN: 0-7918-3613-4 | eISBN: 0-7918-3599-5
  • Copyright © 2002 by ASME


During resent years there has been an increasing interest in titanium as a material for offshore risers. The use of titanium in offshore risers has been considered in several projects in the North Sea over the last decades, namely Heidrun, Visund, Kristin and Åsgard. Additionally, a significant number of titanium taper joints have been successfully designed and are put into service. The principles of standards such as DNV Offshore Standard for Submarine Pipelines (DNV OS F101) [1] have been utilized for design of titanium risers. However, significant modifications have been necessary in order to use this standard for titanium purposes, introducing extensive demands to the design process. In this connection, DNV is currently developing a recommended practice (RP) for design of titanium risers, DNV RP-F201. The RP is based on a probabilistic foundation using limit state formulations and following the Load and Resistance Design Format. The format is flexible to easily accommodate new technical results from research or future developments. All aspects of the design, including relevant considerations to manufacturing and fabrication, are covered.

Copyright © 2002 by ASME



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