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Consequences of radioactive releases into the sea resulting from the accident at the Fukushima Dai-ichi nuclear power plant - Evolution of expert investigation according to the data available ArchiMer
Laguionie, Philippe; Bailly-du-bois, Pascal; Boust, D.; Fievet, B.; Garreau, Pierre; Connan, O.; Charmasson, Sabine; Arnaud, M.; Duffa, Celine; Champion, D..
The accident at the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) in March 2011 led to an unprecedented direct input of artificial radioactivity into the marine environment. The Institute for Radioprotection and Nuclear Safety was requested by the French authorities to investigate the radioecological impact of this input, in particular the potential contamination of products of marine origin used for human consumption. This article describes the close link between the responses provided and the availability of the data, as well as their nature and ability to meet the requirements of expert investigation. These responses were needed: (i) to evaluate the inputs of radionuclides into the marine environment, (ii) to understand their dispersion in seawater,...
Tipo: Text Palavras-chave: Nuclear power plant; Accident analysis; Seawater; Sediment; Biota.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00096/20690/18353.pdf
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Mesoscale dispersion of 85 Kr in the vicinity of the AREVA La Hague reprocessing plant ArchiMer
Connan, O.; Smith, K.; Solier, L.; Maro, D.; Hébert, D.; Bacon, G..
The Institut de Radioprotection et de Sureté Nucléaire (IRSN) performed a series of air sampling campaigns at mesoscale distances (10–80 km) from the AREVA La Hague reprocessing plant (north west of France) between 2007 and 2009. These samples were collected in order to test and optimise a technique to measure low krypton-85 (85Kr) air concentrations, and to investigate the performance of three atmospheric dispersion models (RIMPUFF, HySplit, and ADMS). This paper presents 85Kr air concentrations measured at both land and sea locations. In addition, this paper compares the measured 85Kr air concentrations, which varied from 2 to 8000 Bq m−3, with the predictions from the atmospheric dispersion models. During stable wind conditions, the dispersion models...
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Ano: 2011 URL: https://archimer.ifremer.fr/doc/00239/35011/33547.pdf
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