﻿Use of remix spent mixed fuel plutonium in the BN-1200 reactor

Kovalev, N. V.; Prokoshin, A. M.; Kudinov, A. S.; Nevinitsa, V. A.

Publication:
Use of remix spent mixed fuel plutonium in the BN-1200 reactor

creativeworkseries.issn	2452-3038
dc.contributor.author	Kovalev, N. V.
dc.contributor.author	Prokoshin, A. M.
dc.contributor.author	Kudinov, A. S.
dc.contributor.author	Nevinitsa, V. A.
dc.date.accessioned	2023-09-26T06:42:33Z
dc.date.available	2023-09-26T06:42:33Z
dc.date.issued	2023
dc.description.abstract	The VVER-1000 thermal neutron reactor can operate on mixed uranium-plutonium fuel with a content of reactor-grade plutonium up to 5% with a 100% loaded core. In this case, plutonium burns up to 56% of odd isotopes. The energy potential of such plutonium is very low, and its further use in thermal reactors is impractical. However, such plutonium can be used in fast neutron reactors. The paper presents the results of investigating the possibility for such isotopic plutonium composition to be used in the BN-1200 thermal neutron reactor and its value be increased for the plutonium recycle in the reactor. For this purpose, a precision model of the BN-1200 reactor has been developed using the Serpent Monte Carlo code. The model has been verified against the reference values of the nuclear fuel burnup and breeding ratios. The study has shown that such plutonium can be used in the BN-1200 reactor MOX fuel. Maintaining the operating cycle length requires the plutonium fraction in the MOX fuel to be increased up to 2%. In the BN-1200 reactor, the isotopic composition has been found to improve for the further recycle of plutonium in the thermal reactor, i.e. odd plutonium isotopes increase. The fewer odd plutonium isotopes at the beginning of the BN-1200 operating cycle, the greater their increase. It can be seen as the result of the calculation that plutonium from VVER-1000 spent mixed fuel must be loaded into the BN-1200 reactor at least twice to increase the fraction of odd isotopes to the level of reactor-grade plutonium.
dc.identifier.citation	Kovalev NV, Prokoshin AM, Kudinov AS, Nevinitsa VA (2023) Use of remix spent mixed fuel plutonium in the BN-1200 reactor. Nuclear Energy and Technology 9(2): 131-136. https://doi.org/10.3897/nucet.9.107762
dc.identifier.doi	10.3897/nucet.9.107762
dc.identifier.issn	2452-3038
dc.identifier.uri	https://openrepository.mephi.ru/handle/123456789/300
dc.identifier.uri	https://doi.org/10.3897/nucet.9.107762
dc.relation.ispartof	Nuclear Energy and Technology
dc.subject	Plutonium improvement
dc.subject	Nuclear fuel
dc.subject	REMIX
dc.subject	REMIX
dc.subject	MIX
dc.subject	MOX
dc.subject	Plutonium
dc.subject	Sodium-cooled fast reacto
dc.subject	BN-1200
dc.title	Use of remix spent mixed fuel plutonium in the BN-1200 reactor
dc.type	journal-article
dspace.entity.type	Publication
oaire.citation.issue	2
oaire.citation.volume	9
relation.isJournalIssueOfPublication	130d4a83-2362-4cca-bc73-deef160e2fcc
relation.isJournalIssueOfPublication.latestForDiscovery	130d4a83-2362-4cca-bc73-deef160e2fcc
relation.isJournalOfPublication	e11ecc6c-1851-485a-af73-18119b4fce7f