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Evaluation of Safe and Failure Zones of Risers and Mooring Lines of Floating Production Systems

[+] Author Affiliations
Aldo Roberto Cruces Girón, Fabrício Nogueira Corrêa, Breno Pinheiro Jacob

Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil

Paper No. OMAE2013-10411, pp. V001T01A024; 9 pages
  • ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 1: Offshore Technology
  • Nantes, France, June 9–14, 2013
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-5531-7
  • Copyright © 2013 by ASME


In recent years, the design procedures of risers and mooring system for floating production systems (FPS) have had more feedback. In this way mooring and risers designers can identify, even in an early stage, the constraints imposed by one system over the other.

This work presents an evaluation of the crossing of the information obtained from the analyses of risers and mooring system. Different riser and mooring analysis procedures are applied to a typical FPS for deep water applications. First, failure zones of the riser system are identified, so a safe operating limit zone can be defined. Then, the excursions of the platform are calculated taking into account the global response of the coupled system (hull, mooring lines and risers). Finally, the results are crossed in order to verify if the excursions of the platform are within the safe operating area.

The evaluation presented here shows the important of correctly defining the safe operational zones and how the crossing of information can be conservative or not within the design process of mooring lines and risers.

Copyright © 2013 by ASME



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