Propagation of Cross-Section Uncertainties in Criticality Calculations in the Framework of UAM-Phase I Using MCNPX-2.7e and SCALE-6.1
Joint Authors
Cabellos, Oscar
Martínez, J. S.
Díez, C. J.
Herrero, J. J.
Source
Science and Technology of Nuclear Installations
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-03-27
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
In the framework of the OECD/NEA project on Benchmark for Uncertainty Analysis in Modeling (UAM) for Design, Operation, and Safety Analysis of LWRs, several approaches and codes are being used to deal with the exercises proposed in Phase I, “Specifications and Support Data for Neutronics Cases.” At UPM, our research group treats these exercises with sensitivity calculations and the “sandwich formula” to propagate cross-section uncertainties.
Two different codes are employed to calculate the sensitivity coefficients of keff to cross sections in criticality calculations: MCNPX-2.7e and SCALE-6.1.
The former uses the Differential Operator Technique and the latter uses the Adjoint-Weighted Technique.
In this paper, the main results for exercise I-2 “Lattice Physics” are presented for the criticality calculations of PWR.
These criticality calculations are done for a 15×15 TMI fuel assembly at four different states: HZP-Unrodded, HZP-Rodded, HFP-Unrodded, and HFP-Rodded.
The results of the two different codes above are presented and compared.
The comparison proves a good agreement between SCALE-6.1 and MCNPX-2.7e in keff uncertainty that comes from the sensitivity coefficients calculated by both codes.
Differences are found when the sensitivity profiles are analysed, but they do not lead to differences in the keff uncertainty.
American Psychological Association (APA)
Díez, C. J.& Herrero, J. J.& Cabellos, Oscar& Martínez, J. S.. 2013. Propagation of Cross-Section Uncertainties in Criticality Calculations in the Framework of UAM-Phase I Using MCNPX-2.7e and SCALE-6.1. Science and Technology of Nuclear Installations،Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-467469
Modern Language Association (MLA)
Díez, C. J.…[et al.]. Propagation of Cross-Section Uncertainties in Criticality Calculations in the Framework of UAM-Phase I Using MCNPX-2.7e and SCALE-6.1. Science and Technology of Nuclear Installations No. 2013 (2013), pp.1-10.
https://search.emarefa.net/detail/BIM-467469
American Medical Association (AMA)
Díez, C. J.& Herrero, J. J.& Cabellos, Oscar& Martínez, J. S.. Propagation of Cross-Section Uncertainties in Criticality Calculations in the Framework of UAM-Phase I Using MCNPX-2.7e and SCALE-6.1. Science and Technology of Nuclear Installations. 2013. Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-467469
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-467469