Uncertainty Analysis of Light Water Reactor Fuel Lattices
Joint Authors
Reventos, Francesc
Ivanov, Kostadin
Arenas, C.
Bratton, R.
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
2013-03-13
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
The study explored the calculation of uncertainty based on available cross-section covariance data and computational tool on fuel lattice levels, which included pin cell and the fuel assembly models.
Uncertainty variations due to temperatures changes and different fuel compositions are the main focus of this analysis.
Selected assemblies and unit pin cells were analyzed according to the OECD LWR UAM benchmark specifications.
Criticality and uncertainty analysis were performed using TSUNAMI-2D sequence in SCALE 6.1.
It was found that uncertainties increase with increasing temperature, while kinf decreases.
This increase in the uncertainty is due to the increase in sensitivity of the largest contributing reaction of uncertainty, namely, the neutron capture reaction 238U(n, γ) due to the Doppler broadening.
In addition, three types (UOX, MOX, and UOX-Gd2O3) of fuel material compositions were analyzed.
A remarkable increase in uncertainty in kinf was observed for the case of MOX fuel.
The increase in uncertainty of kinf in MOX fuel was nearly twice the corresponding value in UOX fuel.
The neutron-nuclide reaction of 238U, mainly inelastic scattering (n, n′), contributed the most to the uncertainties in the MOX fuel, shifting the neutron spectrum to higher energy compared to the UOX fuel.
American Psychological Association (APA)
Arenas, C.& Bratton, R.& Reventos, Francesc& Ivanov, Kostadin. 2013. Uncertainty Analysis of Light Water Reactor Fuel Lattices. Science and Technology of Nuclear Installations،Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-472254
Modern Language Association (MLA)
Arenas, C.…[et al.]. Uncertainty Analysis of Light Water Reactor Fuel Lattices. Science and Technology of Nuclear Installations No. 2013 (2013), pp.1-10.
https://search.emarefa.net/detail/BIM-472254
American Medical Association (AMA)
Arenas, C.& Bratton, R.& Reventos, Francesc& Ivanov, Kostadin. Uncertainty Analysis of Light Water Reactor Fuel Lattices. Science and Technology of Nuclear Installations. 2013. Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-472254
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-472254