Atmospheric tritium concentrations under influence of AREVA NC La Hague reprocessing plant (France) and background levels - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Environmental Radioactivity Année : 2017

Atmospheric tritium concentrations under influence of AREVA NC La Hague reprocessing plant (France) and background levels

Résumé

In-air tritium measurements were conducted around the AREVA NC La Hague reprocessing plant, as well as on other sites that are not impacted by the nuclear industry in northwest of France. The results indicate that the dominant tritium form around the AREVA site is HT (86%). HT and HTO levels are lower than 5 and 1 Bq. m−3 for hourly samples taken in the plume. No tritiated organic molecules (TOM) were detected. 26 measurement campaigns were performed and links were established between near-field 85Kr, HT and HTO activities. Environmental measurements are in line with those taken at the discharge stack, and tend to demonstrate that there are no rapid changes in the tritium forms released. Out of the influence of any nuclear activities, the levels measured were below 13 mBq.m−3 for HT and 5 mBq.m−3 for HTO (andlt;0.5 Bq. L−1). HTO level in air seems to be influenced by HTO activities in surrounding seawater. © 2017 Elsevier Ltd

Dates et versions

hal-02556027 , version 1 (27-04-2020)

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Citer

O. Connan, D. Hébert, L. Solier, D. Maro, G. Pellerin, et al.. Atmospheric tritium concentrations under influence of AREVA NC La Hague reprocessing plant (France) and background levels. Journal of Environmental Radioactivity, 2017, 177, pp.184-193. ⟨10.1016/j.jenvrad.2017.06.015⟩. ⟨hal-02556027⟩

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