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.
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https://hal-supelec.archives-ouvertes.fr/hal-00777659
Contributor : Yanfu Li <>
Submitted on : Thursday, January 17, 2013 - 5:16:07 PM
Last modification on : Tuesday, August 13, 2019 - 11:10:04 AM

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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, Elsevier, 2012, 100, pp.75-83. ⟨10.1016/j.ress.2011.12.012⟩. ⟨hal-00777659⟩

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