Multiobjective optimization approach to containment performance criteria
The objective of this study is to demonstrate a method for specifying containment performance criteria in a systematic way given top level safety goals. A set of the containment performance criteria is designed in terms of the reliabilities of the systems that perform various containment functions, i.e., mitigation, structural capacity, and bypass. A different formulation of containment performance criteria is also obtained from the same optimization process using the frequencies of the release categories. The multiobjective optimization approach was used as a method for deriving a finite manageable set of self-consistent relations between the top level safety goals and specific sets of measures of containment performance. The direct method based on the direct search is developed for the generation of noninferior solutions to the multiobjective optimization problem. The results are displayed by a set of distributions of the reliabilities of systems and the frequencies of release categories. These distributions show the favored and disfavored ranges of decision variables. All noninferior solutions found by the proposed methodology are also given. Each noninferior solution represents a viable design option which considers both the top level safety goals and cost effectiveness. For those two important models, PRA model and cost model, sensitivities of the results are studied.
- Research Organization:
- Michigan Univ., Ann Arbor (USA)
- OSTI ID:
- 5149977
- Country of Publication:
- United States
- Language:
- English
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