Monte Carlo-based assessment of the safety performance of a radioactive waste repository

Cadini, Francesco; Sanctis, J. De; Girotti, T.; Zio, Enrico; Luce, Alfredo; Taglioni, A.

doi:10.1016/j.ress.2010.04.002

Cited by 9 publications

(5 citation statements)

References 13 publications

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“…The near surface repository considered is a design concept studied by ENEA [29] [35][36] [37], and has similarities with the currently operative disposal facility of El Cabril, Spain [38]. As the radionuclides exit the repository floor, they migrate through the unsaturated zone, whose most important effect is that of retarding the infiltration towards the saturated zone [39].…”

Section: Resultsmentioning

confidence: 99%

“…As the radionuclides exit the repository floor, they migrate through the unsaturated zone, whose most important effect is that of retarding the infiltration towards the saturated zone [39]. Then, the radionuclide migration in the groundwater domain is described to occur within a highly fractured limestone layer exhibiting extensive karstic phenomena.…”

Section: Resultsmentioning

confidence: 99%

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Monte Carlo simulation of radionuclide migration in fractured rock for the performance assessment of radioactive waste repositories

Cadini

Sanctis

Bertoli

et al. 2013

Reliability Engineering & System Safety

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Monte Carlo simulation of radionuclide migration in fractured rock for the performance assessment of radioactive waste repositories

Cadini

Sanctis

Bertoli

et al. 2013

Reliability Engineering & System Safety

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“…the expected dose increments are estimated as the product of the probability of occurrences of DE and the arithmetic mean over a N-sized sample of dose increments D inc DE,i . Operatively, the ith joint realization of n DE (conditioned on n DE ࣙ 1) and a DE is drawn by sampling techniques, (15,25,31) such as Monte Carlo, (101)(102)(103)(104) and input into the models that calculate the corresponding D inc DE,i . Traditionally, probabilistic assessments have relied on models to represent most FEP interactions.…”

Section: Interpretation Of the Scenariosmentioning

confidence: 99%

Scenario Analysis for the Safety Assessment of Nuclear Waste Repositories: A Critical Review

2017

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A major challenge in scenario analysis for the safety assessment of nuclear waste repositories pertains to the comprehensiveness of the set of scenarios selected for assessing the safety of the repository. Motivated by this challenge, we discuss the aspects of scenario analysis relevant to comprehensiveness. Specifically, we note that (1) it is necessary to make it clear why scenarios usually focus on a restricted set of features, events, and processes; (2) there is not yet consensus on the interpretation of comprehensiveness for guiding the generation of scenarios; and (3) there is a need for sound approaches to the treatment of epistemic uncertainties.

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“…The formal analogy leading to the identification of the FKEs parameters is based on a Eulerian discretization of the dual‐continua equations, thus introducing numerical dispersion. With regards to particle migration in a compartment model, methods were proposed in literature to theoretically solve this problem, which are based on sampling the particles' residence time distributions obtained by separate, more detailed models [ Kawasaki and Ahn , 2006; Cadini et al , 2010a, b]. However, being beyond the main purpose of this paper, this issue is left to further investigations.…”

Section: Kolmogorov‐dmitriev Particle Tracking For Modeling Contaminamentioning

confidence: 99%

A novel particle tracking scheme for modeling contaminant transport in a dual‐continua fractured medium

Cadini

Bertoli

Sanctis

et al. 2012

Water Resources Research

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[1] The estimation of the extent and timing of solute migration in a fractured medium is a fundamental task for verifying the level of protection against contaminant releases (e.g., toxic chemicals or radionuclides) offered by the engineered and natural barriers of a waste repository. In this paper we present a novel approach for modeling solute transport in a fractured medium, based on an extension of the Kolmogorov-Dmitriev theory of stochastic branching processes. The model equations for the expected values of the solute concentration take a form similar to that of classical dual-continua models. On the other hand, the stochastic nature of the modeling approach lends itself to a new particle tracking scheme of resolution, which allows accounting for realistic features of the transport process. The proposed stochastic modeling framework and simulation solution approach are illustrated with reference to the experimental results from a case study of literature. Some of the model parameters are optimally identified by means of a genetic algorithm search aimed at best fitting the experimental data.Citation: Cadini, F., I. Bertoli, J. De Sanctis, and E. Zio (2012), A novel particle tracking scheme for modeling contaminant transport in a dual-continua fractured medium, Water Resour.

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Monte Carlo-based assessment of the safety performance of a radioactive waste repository

Cited by 9 publications

References 13 publications

Monte Carlo simulation of radionuclide migration in fractured rock for the performance assessment of radioactive waste repositories

Monte Carlo simulation of radionuclide migration in fractured rock for the performance assessment of radioactive waste repositories

Scenario Analysis for the Safety Assessment of Nuclear Waste Repositories: A Critical Review

A novel particle tracking scheme for modeling contaminant transport in a dual‐continua fractured medium

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