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- Andersson, Kasper G, et al.
(author)
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Revision of deposition and weathering parameters for the ingestion dose module (ECOSYS) of the ARGOS and RODOS decision support systems.
- 2011
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In: Journal of environmental radioactivity. - : Elsevier BV. - 1879-1700 .- 0265-931X.
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Journal article (peer-reviewed)abstract
- The ECOSYS model is the ingestion dose model integrated in the ARGOS and RODOS decision support systems for nuclear emergency management. The parameters used in this model have however not been updated in recent years, where the level of knowledge on various environmental processes has increased considerably. A Nordic work group has carried out a series of evaluations of the general validity of current ECOSYS default parameters. This paper specifically discusses the parameter revisions required with respect to the modelling of deposition and natural weathering of contaminants on agricultural crops, to enable the trustworthy prognostic modelling that is essential to ensure justification and optimisation of countermeasure strategies. New modelling approaches are outlined, since it was found that current ECOSYS approaches for deposition and natural weathering could lead to large prognostic errors.
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| 3. |
- Iosjpe, Mikhail, et al.
(author)
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Consequences of severe radioactive releases to Nordic Marine environment
- 2014
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Reports (other academic/artistic)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.
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