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Sensing ruthenium tetroxide Emissions : a spectroscopic study

Abstract : After the Fukushima accident, it became essential to have a way to monitor in real time the evolution of a nuclear reactor during a severe accident, in order to react efficiently and minimize the industrial, ecological and health consequences of the accident. Ruthenium is a low volatile fission product but in case of the rupture of the vessel lower head by the molten corium, the air entering into the vessel oxidizes Ru into a gaseous form RuO$_4$. To monitor the presence of RuO4 allows making a diagnosis of the core degradation and quantifying the potential release into the atmosphere. RuO$_4$ is of prime importance since it can have a significant radiological impact. Here, we present the study of the feasibility of the monitoring by an optical measurement.
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https://hal-cea.archives-ouvertes.fr/cea-02509738
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  • HAL Id : cea-02509738, version 1

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V. Boudon, D. Bermejo, J. Vander Auwera, G. Ducros, S. Reymond-Laruinaz, et al.. Sensing ruthenium tetroxide Emissions : a spectroscopic study. Journées du GDRI HiResMIR, Oct 2015, Creteil, France. ⟨cea-02509738⟩

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