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Floatover Deck Installation: Case Study — Structural Efficiency of Longitudinally and Transversely-Recessed Structures

[+] Author Affiliations
Lee A. O’Neill, Emmanuel Fakas, Rodney Pinna, Timothy Walsh

University of Western Australia, Perth, WA, Australia

Paper No. OMAE2004-51100, pp. 175-188; 14 pages
doi:10.1115/OMAE2004-51100
From:
  • ASME 2004 23rd International Conference on Offshore Mechanics and Arctic Engineering
  • 23rd International Conference on Offshore Mechanics and Arctic Engineering, Volume 1, Parts A and B
  • Vancouver, British Columbia, Canada, June 20–25, 2004
  • Conference Sponsors: Ocean, Offshore, and Arctic Engineering Division
  • ISBN: 0-7918-3743-2 | eISBN: 0-7918-3738-6
  • Copyright © 2004 by ASME

abstract

Conventional floatover deck (FOD) installation on a jacket substructure requires the top of the structure to be recessed appropriately, either in the longitudinal or transverse direction to accommodate the vessel transporting the deck. The recess direction is very important to the design of the jacket and influences the outfitting of appurtenances, the shape of the deck and the floatover concept as a whole. This study investigates the structural integrity of typical longitudinal and transverse jackets suitable for FOD installation under both inplace and installation conditions. The study also assesses the structural efficiency of the two options under various installation conditions and benchmarks their structural performance against more conventional jackets associated with lift-installed decks.

Copyright © 2004 by ASME
Topics: Design , Shapes , Vessels

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