Small power lead fast reactor with metallic fuel

Khorasanov, G.L.; Samokhin, D. S.; Zevyakin, Aleksandr Sergeevich; Zemskov, E A; Blokhin, Anatolij Ivanovich

doi:10.26583/npe.2018.1.04

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Bruts-25 Reactor Concept1

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2020

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“…The design of the BRUTs fast training reactor was discussed in (Samokhin et al 2015). Its optimization and conversion to the incineration mode consisted in increasing its thermal power and using innovative zirconium-alloyed metallic fuel (Harp et al 2017, 2018. The design parameters of the BRUTs-25 reactor are presented in Table 1.…”

Section: Bruts-25 Reactor Conceptmentioning

confidence: 99%

Reactor with metallic fuel and lead-208 coolant

Khorasanov

Blokhin²

2020

NUCET

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The paper considers the concept of a fast lead cooled 25MW reactor for a variety of applications, including incineration of minor actinides, production of medical radioisotopes, testing of radiation-damaged nuclear technology materials, etc. A specific feature of the proposed reactor is rather a high neutron flux of 2.6·1015 n/(cm2·s) at the core center, high average neutron energy of 0.95 MeV at the core center, and a large fraction (40%) of hard neutrons (En > 0.8 MeV). The extremely high estimated reactor parameters are achieved thanks to the small core dimensions (DxH ≈ 0.50×0.42 m2), innovative metallic fuel of the Pu-Am-Np-Zr alloy, and the 208Pb enriched lead coolant. A relatively high probability of 241Am fission (about 50%) is achieved in the reactor core’s hard spectrum, this making it possible to incinerate up to 4 kg of 241Am during one reactor campaign of 1000 effective days.

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Section: Bruts-25 Reactor Conceptmentioning

confidence: 99%