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Neutronic evaluation of VVER fuel assembly with chemical spectral shift regulation

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creativeworkseries.issn2452-3038
dc.contributor.authorAshraf, O.
dc.contributor.authorEl-Kholy, A. H.
dc.contributor.authorElzayat, T.
dc.contributor.authorAbdalla, A. M.
dc.contributor.authorAshry, A. H.
dc.date.accessioned2024-09-19T12:30:14Z
dc.date.available2024-09-19T12:30:14Z
dc.date.issued2024
dc.description.abstracthe performance of the spectral shift control (SSC) method is evaluated and compared to the conventional poison method in the VVER-1000 fuel assembly design. The SSC method can be implemented by gradually adjusting the ratio of heavy water to light water moderator (D2O/H2O) during the fuel cycle. In this study, the efficiency of using the SSC design with or without a thermal absorber (gadolinium) is investigated. We apply the SSC with both 12 burnable absorber rods containing 4.0 wt.% Gd2O3 (Case 1) and without Gd2O3 (Case 2). The neutronic calculations indicate that the discharge burnup is enhanced by 60% and the conversion ratio (CR) is increased by 64.4% at the beginning of the cycle (BOC) compared to the benchmark data. The breeding of Pu239 and Pu241 is extended to 33.7% and 29.5%, respectively, for the SSC design case (2), and better utilization of U-235 and U-238 has been achieved compared to BM.
dc.identifier.citationAshraf O, El-Kholy AH, Elzayat T, Abdalla AM, Ashry AH (2024) Neutronic evaluation of VVER fuel assembly with chemical spectral shift regulation. Nuclear Energy and Technology 10(3): 153-160. https://doi.org/10.3897/nucet.10.125815
dc.identifier.doi10.3897/nucet.10.125815
dc.identifier.issn2452-3038
dc.identifier.urihttps://nucet.pensoft.net/article/125815/list/9/
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/14969
dc.relation.ispartofNuclear Energy and Technology
dc.subjectNeutronics
dc.subjectfuel cycle
dc.subjectVVER
dc.subjectSERPENT-2
dc.subjectChemical spectral shift regulation
dc.titleNeutronic evaluation of VVER fuel assembly with chemical spectral shift regulation
dc.typejournal-article
dspace.entity.typePublication
oaire.citation.issue3
oaire.citation.volume10
relation.isJournalIssueOfPublication4aca891f-6a8b-4437-9f27-4ee5e609e53f
relation.isJournalIssueOfPublication.latestForDiscovery4aca891f-6a8b-4437-9f27-4ee5e609e53f
relation.isJournalOfPublicatione11ecc6c-1851-485a-af73-18119b4fce7f
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