DETERMINISTIC AND PROBABILISTIC ASSESSMENT OF FPSO HULL GIRDER STRENGTH

This paper describes how FPSOs are good candidates for marginal and deep water oil fields. Because of their unique operational scenarios, such as operating in allocation for quite a long time, constant change of its loading conditions, possible harsh environments, etc., the design criteria for conventional ships are not necessarily applicable to FPSOs. The objective of this paper is to develop a new assessment procedure based on the prediction of global hull girder loads and stresses from first principle. The paper predicts that stillwater and wave-induced loads on a typical FPSO by both first principle and rule-based calculations. The long-term prediction of hull-girder loads was also carried out for two sites. The hull girder was then assessed by both deterministic and probabilistic approaches. In deterministic analysis the primary and local strength of the FPSO is assessed by rule-based formulations. The progressive collapse analysis was used to predict the ultimate strength of the hull girder. In probabilistic analysis, reliability of three failure modes of the hull girder was estimated by the first order second moment method. It was found that the rule-based wave-induced load prediction method yields much smaller values than the first principle calculation. It is believed that wave-induced loads should be obtained using a first principle approach.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0080439500
• Corporate Authors:

  Elsevier

  Radarweg 29
  Amsterdam,   Netherlands  1043 NX
• Authors:
  • Incecik, A
  • Pu, Y S
• Conference:
  • Practical Design of Ships and Other Floating Structures. Proceedings of the Eighth International Symposium on Practical Design of Ships and Other Floating Structures
  • Location: Shanghai, China
  • Date: 2001-9-16 to 2001-9-21
• Publication Date: 2001

Language

• English

Media Info

• Features: References; Tables;
• Pagination: p. 947-953
• Serial:
  • Volume: 2

Subject/Index Terms

• TRT Terms: Analysis; Collapse; Design; Hulls; Loads; Probability; Reliability; Waves
• Uncontrolled Terms: Floating Production, Storage and Offloading Vessel
• Subject Areas: Data and Information Technology; Design; Marine Transportation;

Filing Info

• Accession Number: 00823308
• Record Type: Publication
• ISBN: 0080439500
• Files: TRIS
• Created Date: Jan 7 2002 12:00AM