An Advanced Sodium-Cooled Fast Reactor Core Concept Using Uranium-Free Metallic Fuels for Maximizing TRU Burning Rate
| Autor: | Ser Gi Hong, Wuseong You |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Nuclear fuel cycle
Liquid metal Materials science sodium-cooled fast reactor (SFR) 020209 energy Nuclear engineering Geography Planning and Development lcsh:TJ807-830 lcsh:Renewable energy sources chemistry.chemical_element 02 engineering and technology Management Monitoring Policy and Law 01 natural sciences 010305 fluids & plasmas Sodium-cooled fast reactor 0103 physical sciences 0202 electrical engineering electronic engineering information engineering nuclear fuel cycle Nuclide lcsh:Environmental sciences Burnup lcsh:GE1-350 Renewable Energy Sustainability and the Environment TRU burning uranium-free fuel PWR spent fuel lcsh:Environmental effects of industries and plants Uranium Coolant lcsh:TD194-195 chemistry Delayed neutron |
| Zdroj: | Sustainability, Vol 9, Iss 12, p 2225 (2017) Sustainability; Volume 9; Issue 12; Pages: 2225 |
| ISSN: | 2071-1050 |
| Popis: | In this paper, we designed and analyzed advanced sodium-cooled fast reactor cores using uranium-free metallic fuels for maximizing burning rate of transuranics (TRU) nuclides from PWR spent fuels. It is well known that the removal of fertile nuclides such as 238U from fuels in liquid metal cooled fast reactor leads to the degradation of important safety parameters such as the Doppler coefficient, coolant void worth, and delayed neutron fraction. To resolve the degradation of the Doppler coefficient, we considered adding resonant nuclides to the uranium-free metallic fuels. The analysis results showed that the cores using uranium-free fuels loaded with tungsten instead of uranium have a significantly lower burnup reactivity swing and more negative Doppler coefficients than the core using uranium-free fuels without resonant nuclides. In addition, we considered the use of axially central B4C absorber region and moderator rods to further improve safety parameters such as sodium void worth, burnup reactivity swing, and the Doppler coefficient. The results of the analysis showed that the final design core can consume ~353 kg per cycle and satisfies self-controllability under unprotected accidents. The fuel cycle analysis showed that the PWR–SFR coupling fuel cycle option drastically reduces the amount of waste going to repository and the SFR burner can consume the amount of TRUs discharged from 3.72 PWRs generating the same electricity. |
| Databáze: | OpenAIRE |
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