Ruthenium release from fuel in accident conditions
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Guillaume Brillant
Abstract
During a hypothetical nuclear power plant accident, fission products may be released from the fuel matrix and then reach the containment building and the environment. Ruthenium is a very hazardous fission product that can be highly and rapidly released in some accident scenarios. The impact of the atmosphere redox properties, temperature, and fuel burn-up on the ruthenium release is discussed. In order to improve the evaluation of the radiological impact by accident codes, a model of the ruthenium release from fuel is proposed using thermodynamic equilibrium calculations. In addition, a model of fuel oxidation under air is described. Finally, these models have been integrated in the ASTEC accident code and validation calculations have been performed on several experimental tests.
© by Oldenbourg Wissenschaftsverlag, München, Germany
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Artikel in diesem Heft
- Interactions of Sulfolobus acidocaldarius with uranium
- Selective recovery of uranium from THOREX feed by hollow fibre supported liquid membrane technique containing di(2-ethylhexyl) isobutyramide (D2EHIBA) as the carrier
- Ruthenium release from fuel in accident conditions
- Rapid separation of lanthanides and actinides on small particle based reverse phase supports
- Development of gamma spectrometric method for the determination of thorium in phosphoric acid solution
- Effect of humic acid, fulvic acid, pH, ionic strength and temperature on 63Ni(II) sorption to MnO2
- The influence of temperature on the diffusion of 125I− in Beishan Granite
- Radiolytic degradation of methoxychlor in methanol and monitoring of radiolytic products by HPLC and GC-MS
