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Dynamic Effect of a Stabilizing Tank on a FPSO

[+] Author Affiliations
Rodrigo de Souza Silva, Fábio Meneses

Petrobras, Rio de Janeiro, Brazil

Antonio Carlos Fernandes, Severino Fonseca Silva

COPPE/UFRJ, Rio de Janeiro, Brazil

Paper No. OMAE2009-79480, pp. 459-467; 9 pages
  • ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 1: Offshore Technology
  • Honolulu, Hawaii, USA, May 31–June 5, 2009
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4341-3 | eISBN: 978-0-7918-3844-0
  • Copyright © 2009 by ASME


It is becoming clear that roll response of a FPSO may be hazardous if the resonance exits for certain incoming wave field. In several parts of the world this is happening. One manner to control the response is to use stabilizing tanks which is a dynamic absorber. The paper addresses the design of a stabilizing tank on board of a FPSO to control the roll response. It is shown how to use existing storage tanks for that matter. The existing tanks are constantly partially filled and tuned to the natural frequency. This is done by controlling the internal height. The sizing of the stabilizer tank was studied to check the responses and evaluated how sensitive the system is considering the stabilizer tanks. Results from a fully non linear CFD code are compared with frequency domain potential theory one. Subsequently the structural consequences of having a stabilizing tank on board are verified via numerical computations.

Copyright © 2009 by ASME
Topics: FPSO



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