On the influence of the americium isotopic vector on the cooling time of minor actinides bearing blankets in fast reactors
| Autor: | L. Buiron, Timothée Kooyman, Gérald Rimpault |
|---|---|
| Přispěvatelé: | Département Etude des Réacteurs (DER), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
[PHYS]Physics [physics]
Fission products Nuclear transmutation Fission 020209 energy Nuclear engineering chemistry.chemical_element Flux Americium 02 engineering and technology Actinide lcsh:TK9001-9401 7. Clean energy chemistry 0202 electrical engineering electronic engineering information engineering lcsh:Nuclear engineering. Atomic power Environmental science Nuclide Decay heat |
| Zdroj: | EPJ N-Nuclear Sciences & Technologies EPJ N-Nuclear Sciences & Technologies, EDP Sciences, 2018, 4, pp.11. ⟨10.1051/epjn/2018007⟩ EPJ N-Nuclear Sciences & Technologies, 2018, 4, pp.11. ⟨10.1051/epjn/2018007⟩ EPJ Nuclear Sciences & Technologies, Vol 4, p 11 (2018) |
| ISSN: | 2491-9292 |
| Popis: | In the heterogeneous minor actinides transmutation approach, the nuclei to be transmuted are loaded in dedicated targets often located at the core periphery, so that long-lived heavy nuclides are turned into shorter-lived fission products by fission. To compensate for low flux level at the core periphery, the minor actinides content in the targets is set relatively high (around 20 at.%), which has a negative impact on the reprocessing of the targets due to their important decay heat level. After a complete analysis of the main contributors to the heat load of the irradiated targets, it is shown here that the choice of the reprocessing order of the various feeds of americium from the fuel cycle depends on the actual limit for fuel reprocessing. If reprocessing of hot targets is possible, it is more interesting to reprocess first the americium feed with a high243Am content in order to limit the total cooling time of the targets, while if reprocessing of targets is limited by their decay heat, it is more interesting to wait for an increase in the241Am content before loading the americium in the core. An optimization of the reprocessing order appears to lead to a decrease of the total cooling time by 15 years compared to a situation where all the americium feeds are mixed together when two feeds from SFR are considered with a high reprocessing limit. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|