Modeling of Multiple Fuel Recycling with Minor Actinides in High-Capacity Fast Power Reactors Using the Code System SCALE

9/17/2026 2026 - #03 Modelling processes at nuclear facilities

Khomyakov A.Yu. Rodina E.A. Ternovykh M.Y. Tikhomirov G.V.

https://doi.org/10.26583/npe.2026.3.16

The features of minor actinide (MA) transmutation, generated in a two-component nuclear power system, within commercial fast power reactors operating in a closed fuel cycle are examined. A three-stage methodology for the computational analysis of MA transmutation efficiency during multiple recycling is described. The multi-purpose module TRITON of the code system SCALE-6.2.4 was used for the simulation. To adapt the tool for multiple recycling tasks, a step-by-step calculation of the recycled fuel composition was performed for various schemes, accounting for technological losses and plutonium breeding ratios. The results of modeling the transmutation of “intrinsic” and “external” MAs (from VVER spent nuclear fuel) are presented using the examples of a BN-1200 type reactor with various fuel types and a BR-1200 heavy liquid metal cooled reactor. A comparative analysis was carried out regarding approaches to evaluating the transmutation effect of MAs accumulated in the two-component nuclear power fuel cycle, as well as specific features associated with the multiple recycling of fuel containing MAs.

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actinides fast reactor multiple recycling nuclide kinetics spent nuclear fuel radioactive waste fuel cycle transmutation

Link for citing the article: Khomyakov A.Yu., Rodina E.A., Ternovykh M.Y., Tikhomirov G.V. Modeling of Multiple Fuel Recycling with Minor Actinides in High-Capacity Fast Power Reactors Using the Code System SCALE. Izvestiya vuzov. Yadernaya Energetika. 2026, no. 3, pp. 220-232; DOI: https://doi.org/10.26583/npe.2026.3.16 (in Russian).