ASTEC simulation of fission product source term ruthenium in coolant in severe accident
| Autor: | Xinyi Pan, Shi Xingwei, Wenchao Hu, Jinsheng Bi, Pan Zhang, Yan Yi, Song Wei, Chuanqi Zhao |
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| Rok vydání: | 2019 |
| Předmět: |
Radionuclide
Nuclear fission product Materials science 020209 energy chemistry.chemical_element Thermodynamics 02 engineering and technology 01 natural sciences Redox 010305 fluids & plasmas Aerosol Ruthenium Coolant Nuclear Energy and Engineering chemistry Phase (matter) 0103 physical sciences 0202 electrical engineering electronic engineering information engineering |
| Zdroj: | Annals of Nuclear Energy. 133:658-664 |
| ISSN: | 0306-4549 |
| DOI: | 10.1016/j.anucene.2019.06.063 |
| Popis: | We calculate the accumulation of ruthenium-106 with SCALE code and analyze the distribution of ruthenium-106 under different injection temperatures with ASTEC code. In deposited aerosol phase, the RuO and RuO2 increase with temperature, however the RuO3 increases rapidly and reaches equilibrium at a certain temperature of injection source. In suspended aerosol phase, the accumulation of RuO and RuO2 decreases continuously with rising of temperature, while RuO3 reaches the maximum at 750 °C. In gaseous phase, the masses of RuO and RuO2 increase and reach equilibrium rapidly. Similar to gaseous aerosol phase, the accumulation of RuO3 reaches to the maximum value at 750 °C. RuO4 appears when the temperature above 750 °C and the RuO4 mass at 900 °C are three times more than that of at 750 °C. Our results denote that a reasonable control of thermal-hydraulics parameters and redox conditions can effectively constrain the radionuclide ruthenium migration. |
| Databáze: | OpenAIRE |
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