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Nuclear data uncertainty influence on the breeding ratio in sodium-cooled fast reactor systems

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dc.contributor.authorРыжков, Александр Александрович
dc.contributor.authorRyzhkov, A. A.
dc.contributor.authorTernovykh, M. Y.
dc.contributor.authorTikhomirov, G. V.
dc.contributor.authorТерновых, Михаил Юрьевич
dc.contributor.authorТихомиров, Георгий Валентинович
dc.date.accessioned2023-09-22T12:56:47Z
dc.date.available2023-09-22T12:56:47Z
dc.date.issued2023
dc.description.abstractNuclear data are a main uncertainty source in neutron transport simulations making their consideration in reactor safety necessary. This arises anew with the state-of-the-art reactors known as Generation IV. Some of the reactors suggests providing the reactivity margin below the effective delayed neutron fraction excluding prompt criticality accidents, and the breeding ratio is the key factor in this. Consequently, assessing a degree of the breeding ratio accuracy is of interest. Therefore, in this work, the breeding ratio uncertainties are analyzed by performing a sensitivity and uncertainty analysis of the MET1000 and MOX3600 models with respect to nuclear data using SCALE. As a result, the breeding ratio uncertainties are obtained approximately equal to 2% as the main contributors are 239Pu(n, γ), 238U(n, γ), and 238U(n, n’ ). The uncertainty sources between the models are compared, and 16O preponderantly increases the total uncertainty not directly by its uncertainty but by its impact on the spectrum.
dc.identifier.citationRyzhkov,A.A. Nuclear data uncertainty influence on the breeding ratio in sodium-cooled fast reactor systems / Ryzhkov,A.A. // Annals of Nuclear Energy. - 2023. - 188
dc.identifier.doi10.1016/j.anucene.2023.109814
dc.identifier.issn0306-4549
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/272
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0306454923001330?via%3Dihub
dc.relation.ispartofAnnals of Nuclear Energy
dc.subjectBEPU
dc.subjectSFR
dc.subjectSensitivity and uncertainty analysis
dc.subjectNuclear data
dc.subjectSCALE
dc.subjectBreeding ratio
dc.titleNuclear data uncertainty influence on the breeding ratio in sodium-cooled fast reactor systems
dc.typejournal-article
dspace.entity.typePublication
oaire.citation.volume188
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