Qualification of reeled mechanically lined pipes for fatigue service

Aurelien Pepin, Tomasz Tkaczyk, Noel O’Dowd, Kamran Nikbin

Research output: Contribution to journalArticlepeer-review

Abstract

To meet an increasing demand for conveying corrosive fluids in the subsea oil and gas sector, the authors have proposed a design of mechanically lined pipe (MLP) that enables reel-lay installation under atmospheric pressure without the risk of wrinkling of the corrosion resistant alloy (CRA) lining. The novel design was qualified for reeling and subsequent service life in accordance with DNV-RP-A203. To provide further evidence that a high fatigue performance can be achieved before a carbon steel backing pipe is exposed to corrosive constituents, a qualification programme, detailed in this paper, was undertaken. In addition, a 3D finite element (FE) study was performed on MLPs with interface flaws between the liner and clad overlay weld, and recommendations for the fatigue assessment of MLPs with interface flaws were made.

Original languageEnglish
Pages (from-to)296-303
Number of pages8
JournalInternational Journal of Offshore and Polar Engineering
Volume26
Issue number3
DOIs
Publication statusPublished - 1 Sep 2016

Keywords

  • Fatigue strength
  • Mechanically lined pipe
  • Reel-lay installation
  • Steel catenary riser
  • Stress intensity factor

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