@inproceedings{4ff0361c3e6748ee87c3bb613113d797,
title = "Uncertainty and sensitivity analysis in the neutronic parameters generation over the coupled thermalhydraulic-neutronic nuclear power plant simulations",
abstract = "This paper presents a study of the influence of the uncertainty in the macroscopic neutronic information that describes a three-dimensional BWR core model on the most relevant results of the simulation of a Reactivity Induced Accident (R1A). The analysis of the BWR-R1A has been carried out with a three-dimensional thermal-hydraulic and neutronic model for the coupled system TRACE-PARCS. The cross section information has been generated by the SIMTAB methodology based on the joint use of CASMO-SIMULATE. The Best Estimate analysis consists of a coupled thermal-hydraulic and neutronic description of the nuclear system's behaviour, uncertainties from both aspects should be included and jointly propagated. The statistically based methodology performs a Monte-Carlo kind of sampling of the uncertainty in the macroscopic cross sections. The size of the sampling is determined by the characteristics of the tolerance intervals by applying the Noether-Wilks formulas. A number of simulations equal to the sample size is carried out in which the cross sections used by PARCS are directly modified with uncertainty, and non-parametric statistical methods are applied to the resulting sample of the values of the output variables to determine their intervals of tolerance.",
keywords = "Coupled TH-3DNK codes, Sensitivity, Uncertainty, Wilks methodology",
author = "J. Juanas and T. Barrachina and R. Mir{\'o} and R. Maci{\'a}n",
year = "2009",
language = "English",
isbn = "9781615673490",
series = "American Nuclear Society - International Conference on Mathematics, Computational Methods and Reactor Physics 2009, M and C 2009",
pages = "2395--2406",
booktitle = "American Nuclear Society - International Conference on Mathematics, Computational Methods and Reactor Physics 2009, M and C 2009",
note = "International Conference on Mathematics, Computational Methods and Reactor Physics 2009, M and C 2009 ; Conference date: 03-05-2009 Through 07-05-2009",
}