Thermomechanical Safety Analyses for a 238Pu Production Target at the HFIR
| Autor: | Prashant K. Jain, Christopher J. Hurt, Guillermo Maldonado, James D Freels |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Radiation
Steady state (electronics) Materials science 020209 energy Nuclear engineering chemistry.chemical_element 02 engineering and technology Cermet Stress (mechanics) 020303 mechanical engineering & transports 0203 mechanical engineering Nuclear Energy and Engineering chemistry Electrical resistance and conductance Aluminium Nuclear fission Heat transfer 0202 electrical engineering electronic engineering information engineering Thermo mechanical |
| Zdroj: | Journal of Nuclear Engineering and Radiation Science. 5 |
| ISSN: | 2332-8975 2332-8983 |
| Popis: | Safety analyses at the high flux isotope reactor (HFIR) are required to qualify irradiation of production targets containing neptunium dioxide/aluminum cermet (NpO2/Al) pellets for the production of plutonium-238 (238Pu). High heat generation rates (HGRs) due to a fertile starting material (237Np), low melting temperatures, and previously unstudied material irradiation behavior (i.e., swelling/densification, fission gas release) require a sophisticated set of steady-state thermal simulations in order to ensure sufficient safety margins. Experience gained from previous models for preliminary target designs is incorporated into a more comprehensive production target model designed to qualify a target for three cycles of irradiation and illuminate potential in-reactor behavior of the target. |
| Databáze: | OpenAIRE |
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