FPSO Hull Structures with Sandwich Plate System in Cargo Tanks
Source abstract
Abstract
Nowadays, the floating production storage and offload system (FPSO) is one of the most common platform types for offshore oil production. The traditional arrangement of the stiffened panels creates obstacles for automated cleaning and inspections by remote devices. This paper summarizes the results of an initial study for the design and construction of FPSO hulls with SPS in order to overcome this problem. The main goal is to have the walls and bottom of the cargo tanks free of stiffeners. This research is conducted by first designing the hull with a conventional structural arrangement using steel according to the ABS rules as a benchmark. Following that, the equivalent hull structure with sandwich plates is designed in accordance with the guidelines for SPS construction from DNV rules. Finally, this paper provides the results of a finite element analysis to compare the stresses and ultimate strengths of both types of structures. Briefly, the main results are that the SPS design provides a reduction of 2.8% of the total weight and a better overall structural performance by an increase of 26% for the ultimate strength of the hull.
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Research context
OpenAlex topics: Structural Integrity and Reliability Analysis · Offshore Engineering and Technologies · Marine and Offshore Engineering Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Companhia Siderúrgica Nacional (CSN), São Paulo 04538-132, Brazil
Centre for Marine Technology and Ocean Engineering (CENTEC), Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
Laboratory for Reliability Analysis of Offshore Structures (LACEO), Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-596, Brazil
Funding
Portuguese Foundation for Science and Technology (FCT)
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