Uncertainty and Sensitivity of Neutron Kinetic Parameters in the Dynamic Response of a PWR Rod Ejection Accident Coupled Simulation
Joint Authors
Verdú, G.
Barrachina, T.
Mesado, C.
Soler, A.
Miró, Rafael
Macián-Juan, R.
García-Díaz, J. C.
Source
Science and Technology of Nuclear Installations
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-12-04
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
In nuclear safety analysis, it is very important to be able to simulate the different transients that can occur in a nuclear power plant with a very high accuracy.
Although the best estimate codes can simulate the transients and provide realistic system responses, the use of nonexact models, together with assumptions and estimations, is a source of uncertainties which must be properly evaluated.
This paper describes a Rod Ejection Accident (REA) simulated using the coupled code RELAP5/PARCSv2.7 with a perturbation on the cross-sectional sets in order to determine the uncertainties in the macroscopic neutronic information.
The procedure to perform the uncertainty and sensitivity (U&S) analysis is a sampling-based method which is easy to implement and allows different procedures for the sensitivity analyses despite its high computational time.
DAKOTA-Jaguar software package is the selected toolkit for the U&S analysis presented in this paper.
The size of the sampling is determined by applying the Wilks’ formula for double tolerance limits with a 95% of uncertainty and with 95% of statistical confidence for the output variables.
Each sample has a corresponding set of perturbations that will modify the cross-sectional sets used by PARCS.
Finally, the intervals of tolerance of the output variables will be obtained by the use of nonparametric statistical methods.
American Psychological Association (APA)
Mesado, C.& Soler, A.& Barrachina, T.& Miró, Rafael& García-Díaz, J. C.& Macián-Juan, R.…[et al.]. 2012. Uncertainty and Sensitivity of Neutron Kinetic Parameters in the Dynamic Response of a PWR Rod Ejection Accident Coupled Simulation. Science and Technology of Nuclear Installations،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-486171
Modern Language Association (MLA)
Mesado, C.…[et al.]. Uncertainty and Sensitivity of Neutron Kinetic Parameters in the Dynamic Response of a PWR Rod Ejection Accident Coupled Simulation. Science and Technology of Nuclear Installations No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-486171
American Medical Association (AMA)
Mesado, C.& Soler, A.& Barrachina, T.& Miró, Rafael& García-Díaz, J. C.& Macián-Juan, R.…[et al.]. Uncertainty and Sensitivity of Neutron Kinetic Parameters in the Dynamic Response of a PWR Rod Ejection Accident Coupled Simulation. Science and Technology of Nuclear Installations. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-486171
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-486171