Near-field krypton-85 measurements in stable meteorological conditions around the AREVA NC La Hague reprocessing plant Estimation of atmospheric transfer coefficients - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Environmental Radioactivity Année : 2014

Near-field krypton-85 measurements in stable meteorological conditions around the AREVA NC La Hague reprocessing plant Estimation of atmospheric transfer coefficients

Résumé

The aim of this work was to study the near-field dispersion of 85Kr around the nuclear fuel reprocessing plant at La Hague (AREVA NC La Hague - France) under stable meteorological conditions. Twenty-two 85Kr night-time experimental campaigns were carried out at distances of up to 4km from the release source. Although the operational Gaussian models predict for these meteorological conditions a distance to plume touchdown of several kilometers, we almost systematically observed a marked ground signal at distances of 0.5-4km. The calculated atmospheric transfer coefficients (ATC) show values (1) higher than those observed under neutral conditions, (2) much higher than those proposed by the operational models, and (3) higher than those used in the impact assessments. © 2014 Elsevier Ltd.
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Dates et versions

hal-02641718 , version 1 (28-05-2020)

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Citer

O. Connan, L. Solier, D. Hébert, D. Maro, M. Lamotte, et al.. Near-field krypton-85 measurements in stable meteorological conditions around the AREVA NC La Hague reprocessing plant Estimation of atmospheric transfer coefficients. Journal of Environmental Radioactivity, 2014, 137, pp.142-149. ⟨10.1016/j.jenvrad.2014.07.012⟩. ⟨hal-02641718⟩

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