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Journal Articles Reliability Engineering and System Safety Year : 2012

Subset Simulation of a reliability model for radioactive waste repository performance assessment

Abstract

In this paper, we show an original application of the Subset Simulation (SS) technique on a model for the performance assessment of a near surface radioactive waste repository. The logic of the protective barriers of the repository is represented by a reliability model. The SS approach is founded on the idea that a small failure probability can be expressed as a product of larger conditional probabilities of some intermediate events; with a proper choice of the conditional events, the conditional probabilities can be sufficiently large to allow accurate estimation with a small number of samples. In the application, the method allows improving the efficiency of the random sampling for estimating the repository containment failure probability. Moreover, the peculiar set-partitioning scheme of the SS method is exploited for performing the analysis of the sensitivity of the failure probability estimate to the uncertain model parameters.

Dates and versions

hal-00777659 , version 1 (17-01-2013)

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Cite

F. Cadini, D. Avram, Nicola Pedroni, Enrico Zio. Subset Simulation of a reliability model for radioactive waste repository performance assessment. Reliability Engineering and System Safety, 2012, 100, pp.75-83. ⟨10.1016/j.ress.2011.12.012⟩. ⟨hal-00777659⟩
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