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Design Requirements for High Temperature Flowline Coatings

[+] Author Affiliations
Bjo̸rn Melve

Statoil ASA, Trondheim, Norway

Paper No. OMAE2002-28569, pp. 443-448; 6 pages
doi:10.1115/OMAE2002-28569
From:
  • 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

abstract

It is a challenge to find cost effective insulation systems for subsea flowlines operating at high internal temperatures. Integrated polymeric insulation coatings are susceptible to degradation by hydrolysis or oxidation. Burial of the flowline accelerates the degradation due to the higher outer surface temperature. In addition does the high temperature modify the mechanical properties of the coating materials. It is recommended to include the temperature history of the field in the design basis. Also it is necessary to perform impact test and shear tests of the coating system at the operational temperature. For buried pipelines it is necessary to calculate the insulating effect of the backfill materials on the surface temperature.

Copyright © 2002 by ASME

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