Izvestiya vuzov. Yadernaya Energetika

The peer-reviewed scientific and technology journal. ISSN: 0204-3327

Оценка нейтронно-физических свойств активной зоны реактора ВВЭР-1000 при использовании регенерированного уран-плутониевого топлива

6/22/2023 2023 - #02 Physics and technology of nuclear reactors

Semishin V.V.

DOI: https://doi.org/10.26583/npe.2023.2.02

UDC: 621.039.51

The possibility has been considered for the VVER-1000 reactor fuel column to be formed based on regenerated fuel with the use of the spent fuel accumulated in reactors of the same type. A study was undertaken to investigate the change in the isotopic composition of the plutonium discharged from a thermal reactor in the course of its multiple reprocessing and recycle in a thermal neutron reactor. To obtain an equilibrium isotopic composition of the reactor-grade plutonium, 3D neutronic calculations were performed for the stationary fuel cycles of a VVER-1000 serial reactor with conventional oxide fuel and oxide fuel based on regenerated uranium and based on an undivided mixture of uranium and plutonium oxides from SNF. The neutronic performance of reactor cores was compared for the above fuel types in the course of fuel lifetime, including the following: in-core radial power density shaping, values of reactivity coefficients for various thermal parameters, reactivity control system efficiency, etc.

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neutronic calculation reactor core VVER REMIX fuel SAPPHIRE DESNA closed nuclear fuel cycle plutonium uranium regenerate

Link for citing the article: Semishin V.V. Оценка нейтронно-физических свойств активной зоны реактора ВВЭР-1000 при использовании регенерированного уран-плутониевого топлива. Izvestiya vuzov. Yadernaya Energetika. 2023, no. 2, pp. 14-26; DOI: https://doi.org/10.26583/npe.2023.2.02 (in Russian).

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