Abstract
In this study, nuclear data uncertainties originating from the JEFF-3.3 evaluations of fluorine-19 are systematically examined, with a focus on their impact on steady-state neutronics calculations for a thermal fluoride salt-based Molten Salt Reactor (MSR). The two primary objectives of this article are the quantification of uncertainties in reactivity and power distribution, and the establishment of an entirely open-sourced code suite for educational purposes. The reactor under consideration is based on the TAP design from Transatomic Power, representing a fluoride salt MSR. The uncertainty propagation is investigated with a pseudo Total Monte
Carlo approach: utilizing SANDY, perturbed PENDF files are generated from the evaluated data, and are further processed with PyNJOY2016. Lattice-level calculations employ the DRAGON5 code to produce few-group cross sections, which, in turn, are used in full-core simulations performed with the KOMODO nodal diffusion code. The data transfer between the codes is implemented in Python. While the primary focus in this work is on demonstrating the functionality of the suite, nuances such as assembly discontinuity factors and optimal group structures are intentionally kept limited. The results demonstrate that uncertainties linked to fluorine-19 nuclear data remain modest for thermal systems, with their significance becoming more notable in epithermal systems.
Original language | English |
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Title of host publication | Proceedings of the International Conference on Physics of Reactors, PHYSOR 2024 |
Place of Publication | San Francisco |
Publisher | American Nuclear Society |
Pages | 757-766 |
Number of pages | 10 |
ISBN (Electronic) | 9780894487972 |
DOIs | |
State | Published - 21 Apr 2024 |
Event | 2024 - PHYSOR: International Conference on Physics of Reactors - Hilton San Francisco, San Francisco Duration: 21 Apr 2024 → 24 Apr 2024 https://www.ans.org/meetings/physor2024/ |
Publication series
Name | Proceedings of the International Conference on Physics of Reactors, PHYSOR 2024 |
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Conference
Conference | 2024 - PHYSOR |
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Country/Territory | United States |
City | San Francisco |
Period | 2024-04-21 → 2024-04-24 |
Internet address |
ASJC Scopus subject areas
- Nuclear Energy and Engineering
- Safety, Risk, Reliability and Quality
- Nuclear and High Energy Physics
- Radiation