Assessment of Cold Composite Fuels for PWRs
| Autor: | C. Chabert, M. Phelip, M. Agard, E. Castelier, E. Coulon-Picard, A. Boulore, M. Pelletier, A. Conti, P. Matheron, P. E. Frayssines |
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| Rok vydání: | 2010 |
| Předmět: |
Engineering
business.industry Zirconium alloy Composite number Metallurgy Pressurized water reactor Mechanical engineering Cermet Ceramic matrix composite law.invention chemistry.chemical_compound chemistry law visual_art Powder metallurgy visual_art.visual_art_medium Silicon carbide Ceramic business |
| Zdroj: | Revue Générale Nucléaire. :82-88 |
| ISSN: | 0335-5004 |
| Popis: | This study is devoted to the evaluation of a new innovative micro structured fuel for future pressurized water reactor. This fuel should have the potential to increase the safety margins, lowering fuel temperatures by adding a small fraction of a high conductivity second phase material, the matrix, in the oxide fuel phase. After matrix selection, two different composite fuels were studied: first, a CERCER (CERamic = UO2 -CERamic matrix made of silicon carbide, SiC) fuel type has been investigated, the advantages of a ceramic being generally its transparency to neutrons and its high melting temperature. The study then focused on CERMET fuels (CERamic-METal). Several materials have been considered such as zirconium alloys, austenitic and ferritic stainless steels and chromium based alloys. The behavior of this fuel in a standard rod has been modeled with finite element codes and was assessed for different aspects of the cycle as neutronic studies, thermal behavior in normal, incidental and accidental conditions. Feasibility of fuels has been investigated with the fabrication and characterizations of the microstructure of composite fuels with powder metallurgy and HIP processes. Finally, a global evaluation is given. |
| Databáze: | OpenAIRE |
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