On the ongoing computation of the LVR-15 reactor fuel burnup

Isotopic composition of the LVR-15 reactor fuel changes significantly during the operation time. In order to enable Monte Carlo calculations of the LVR-15 core throughout any reasonable time period, the isotopic compositions of partially depleted fuel assemblies have to be known at the start of the...

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Main Author: Jan Pinta
Format: Article
Language:English
Published: CTU Central Library 2022-12-01
Series:Acta Polytechnica CTU Proceedings
Subjects:
Online Access:https://ojs.cvut.cz/ojs/index.php/APP/article/view/8564
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author Jan Pinta
author_facet Jan Pinta
author_sort Jan Pinta
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description Isotopic composition of the LVR-15 reactor fuel changes significantly during the operation time. In order to enable Monte Carlo calculations of the LVR-15 core throughout any reasonable time period, the isotopic compositions of partially depleted fuel assemblies have to be known at the start of the simulation. Even though the infinite lattice calculation can represent useful initial approximation, the non-leakage assumption is not necessarily valid for compact and highly heterogenous cores like in case of the LVR-15. Therefore, a more advanced calculation process have to be implemented towards appropriate determination of fuel assembly burnup. The main aim of this paper is to describe the current state of the ongoing computation as well as provide an explanation of the chosen calculation scheme of the LVR-15 operation history. Currently available results that are affected by profound inaccuracy are discussed in the final part alongside with planned future improvements.
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spelling doaj.art-25bd159656564d7f9fffeccd40b868462022-12-22T04:23:17ZengCTU Central LibraryActa Polytechnica CTU Proceedings2336-53822022-12-0137485310.14311/APP.2022.37.00485806On the ongoing computation of the LVR-15 reactor fuel burnupJan Pinta0Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Department of Nuclear Reactors, V Holešovičkách 2, 180 00 Prague 8, Czech Republic; Research Centre Řež, Department of Neutron Physics, Hlavní 130, 250 68 Husinec-Řež, Czech RepublicIsotopic composition of the LVR-15 reactor fuel changes significantly during the operation time. In order to enable Monte Carlo calculations of the LVR-15 core throughout any reasonable time period, the isotopic compositions of partially depleted fuel assemblies have to be known at the start of the simulation. Even though the infinite lattice calculation can represent useful initial approximation, the non-leakage assumption is not necessarily valid for compact and highly heterogenous cores like in case of the LVR-15. Therefore, a more advanced calculation process have to be implemented towards appropriate determination of fuel assembly burnup. The main aim of this paper is to describe the current state of the ongoing computation as well as provide an explanation of the chosen calculation scheme of the LVR-15 operation history. Currently available results that are affected by profound inaccuracy are discussed in the final part alongside with planned future improvements.https://ojs.cvut.cz/ojs/index.php/APP/article/view/8564burnup calculationserpentlvr-15 reactor
spellingShingle Jan Pinta
On the ongoing computation of the LVR-15 reactor fuel burnup
Acta Polytechnica CTU Proceedings
burnup calculation
serpent
lvr-15 reactor
title On the ongoing computation of the LVR-15 reactor fuel burnup
title_full On the ongoing computation of the LVR-15 reactor fuel burnup
title_fullStr On the ongoing computation of the LVR-15 reactor fuel burnup
title_full_unstemmed On the ongoing computation of the LVR-15 reactor fuel burnup
title_short On the ongoing computation of the LVR-15 reactor fuel burnup
title_sort on the ongoing computation of the lvr 15 reactor fuel burnup
topic burnup calculation
serpent
lvr-15 reactor
url https://ojs.cvut.cz/ojs/index.php/APP/article/view/8564
work_keys_str_mv AT janpinta ontheongoingcomputationofthelvr15reactorfuelburnup