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Article Dans Une Revue Radiochimica Acta Année : 2010

Ruthenium release from fuel in accident conditions

Résumé

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. © Oldenbourg Wissenschaftsverlag, München.

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Chimie
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Dates et versions

hal-02974268 , version 1 (21-10-2020)

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G. Brillant, C. Marchetto, W. Plumecocq. Ruthenium release from fuel in accident conditions. Radiochimica Acta, 2010, 98 (5), pp.267-275. ⟨10.1524/ract.2010.1719⟩. ⟨hal-02974268⟩

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