Title: Application of Global Sensitivity Analysis to Nuclear Reactor Calculations
Citation: Procedia - Social and Behavioural Sciences vol. 2 no. 6 p. 7726-7727
Publisher: Elsevier
Publication Year: 2010
JRC N°: JRC62992
ISSN: 1877-0428
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC62992
DOI: 10.1016/j.sbspro.2010.05.199
Type: Articles in periodicals and books
Abstract: The studies presented in this paper, describe the application of global sensitivity analysis to the modeling of nuclear reactor physics for better model understanding. Specifically, we investigate how much criticality conditions are affected by uncertainties in various inputs, including nuclear cross-sections, at different energies, from several isotopes in the fuel, the absorber and the moderator. The sensitivity analysis uses the Sobol' and Jansen formulas, which allow us to estimate, for each uncertain input, its main effect, its total effect (i.e. the overall effect, which includes all the interactions, at any order, with all the other uncertain inputs), and all two-way interactions among all possible pairs of uncertain inputs. The sensitivity analysis consists of a number of model simulations, which are performed using Monte Carlo code MCNP5.
JRC Directorate:Space, Security and Migration

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