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Rapport (Rapport De Recherche) Année : 2005

Interpretation of fission product release observed in VERCORS tests with MFPR computation code

Résumé

This document aims to present the current interpretation of fission product release during VERCORS tests. Release kinetics of Cs, Mo, Ba, Ru and I are deeply analyzed on the basis of several hypotheses mainly laying on thermochemistry considerations. It is shown that the fuel characterization at the end of irradiation, especially concerning the chemical speciation and localization of fission products, is of first importance. Elsewhere, a coupling between chemically active fission product release and gas release mechanism is to be considered. Finally, a global interpretation scheme aiming to unify a microscopic interpretation to a macroscopic one is displayed with an adaptation to various cases, namely MOX and high-burnup fuels.
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Dates et versions

irsn-04296368 , version 1 (20-11-2023)

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  • HAL Id : irsn-04296368 , version 1

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Gregory Nicaise. Interpretation of fission product release observed in VERCORS tests with MFPR computation code. DPAM/SEMIC 2004-37, IRSN - Institut de Radioprotection et de Sûreté Nucléaire. 2005. ⟨irsn-04296368⟩

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