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A Rational Risk Acceptability Criterion Based on the Life Quality Index

[+] Author Affiliations
Rüdiger Rackwitz

Technische Universität Muenchen, Muenchen, Germany

Paper No. OMAE2002-28430, pp. 411-424; 14 pages
  • ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering
  • 21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 2
  • Oslo, Norway, June 23–28, 2002
  • Conference Sponsors: Ocean, Offshore, and Arctic Engineering Division
  • ISBN: 0-7918-3612-6 | eISBN: 0-7918-3599-5
  • Copyright © 2002 by ASME


Optimization techniques are essential ingredients of reliability-oriented optimal designs of technical facilities. An example of a suitable objective functions in terms of generalized cost is presented. Within FORM/SORM structural reliability analysis can be reduced to an optimization task and some simple algebra. However, instead of a optimization of cost on top of a optimization for the reliability task, a one-level optimization is proposed by adding the Kuhn-Tucker conditions of the reliability problem to general cost-benefit optimization. A rational basis to account for the cost of saving lives based on the recently proposed Life Quality Index is presented. An example illustrates the methodology.

Copyright © 2002 by ASME



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