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NKS Programme Area:NKS-B
Research Area:Radioecological assessments
Report Number:NKS-296
Report Title:Consequences of severe radioactive releases to Nordic Marine environment
Activity Acronym:COSEMA
Authors:Mikhail Iosjpe, Mats Isaksson, Hans Pauli Joensen, Juhani Lahtinen, Kai Logemann, Sigurður Emil Pálsson, Per Roos, Vesa Suolanen, Vesa-Pekka Vartti,
Abstract:Consequences of hypothetical severe radioactive releases to Nordic marine environment – the Baltic Sea and the North Atlantic - has been considered. As a reference, releases from a 3000 MWth nuclear power plant reactor size was used for the Baltic Sea area accidents. Individual dose to human could be ten to some hundreds of millisieverts in local sea area. In the Baltic Sea area, individual dose was 0.01 mSv after one year and 0.1 mSv after five years from the release event. The collective dose estimate was 880 manSv. In case of hypothetical submarine accidents at the North Atlantic, the marine fluxes are important factors. According to simulation results, e.g. maximum concentration near the source region at the Icelandic coast sinks below 1% only after 300 days. Consequences of an accident of a modern submarine for e.g. to Kattegat region was calculated. The arising doses can be equal or higher than from natural sources. The models predictions seem to reach nice consistence with measured values in qualitative and quantitative considerations.
Keywords:severe radioactive releases, accidents, marine environment, nuclear power plants, submarines, doses, validation
Publication date:27 Jan 2014
ISBN:ISBN 978-87-7893-372-0
Number of downloads:2515
Download:pdf NKS-296.pdf
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