FPSOs: Design Considerations for the Structural Interface Hull and Topsides
Author Krekel, M.H. & Kaminski, M.L.
Title FPSOs: Design Considerations for the Structural Interface Hull and Topsides
Conference/Journal Offshore Technology Conference (OTC), Houston
Paper no. OTC2002-13996
Month May
Year 2002
Publisher OTC
Pages 7

Abstract
This paper discusses the structural interface on FPSOs between the hull structure and the topsides modules. It identifies the most common topsides foundation concepts applied on FPSOs, and discusses the consequences of each configuration for the layout of the unit, the design of the hull structure and the topsides. The information needed by the hull designer and the topside designer is identified. Moreover, the differences between shipbuilding and offshore construction design practices are discussed, and it is identified where and
how these fall short for FPSO purposes. Topics that are addressed are overall safety, operational aspects, such as tank entry and mechanical handling, and the design specifications for the hull and the topsides modules. In order to control the schedule and costs of FPSO projects, fabrication of the hull and topsides should be allowed without impractical or unduly strict specifications imposed on the shipyard or the topsides fabricator. At the same time the traditional design specifications for hull and topsides design may fall short to
cover the functional needs for FPSO service.

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