Reflector macroscopic cross-section data uncertainties effect on the nodal code full-core calculation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F20%3A00342305" target="_blank" >RIV/68407700:21340/20:00342305 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.nucengdes.2020.110743" target="_blank" >https://doi.org/10.1016/j.nucengdes.2020.110743</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.nucengdes.2020.110743" target="_blank" >10.1016/j.nucengdes.2020.110743</a>

Result language
angličtina
Original language name
Reflector macroscopic cross-section data uncertainties effect on the nodal code full-core calculation
Original language description
The nodal codes still represent the key computational part of the nuclear power plant operation analysis. The mathematical model in the codes is connected with physical interpretation via macroscopic cross-section libraries. These data are generated using lattice codes, where the exact geometry is simulated. The uncertainties of the microscopic cross-sections and other geometrical uncertainties are typically not transferred from the lattice codes into the macroscopic libraries. This analysis starts with existing macroscopic data for radial reactor core reflectors and anticipated uncertainties of these data and investigates sensitivity of the critical boron concentration as well as the power prediction in the core to variations of these data. The provided analysis showed strong stability of the results with the changing reflector cross-section characteristics. Even with the highest perturbations of the reflector data the critical boron concentration was not changed by more than 0.15 % and pin power was predicted with less than 1.65% difference. The effects were found to be largely localized.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20305 - Nuclear related engineering; (nuclear physics to be 1.3);

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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