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NKS Programme Area:
NKS-B
Research Area:
Emergency preparedness
Report Number:
NKS-437
Report Title:
Radioecological transfer factors for Nordic subpopulations for assessment of internal committed dose from atmospheric fallout of radiocaesium
Activity Acronym:
ECONORMS
Authors:
Martin Hjellström, Mats Isaksson, Christopher L. Rääf, Lavrans Skuterud, Håvard Thørring, Tiina Torvela,
Abstract:
Measurements of whole body burden of radiocaesium have for a long time been performed in Finland, Norway and Sweden, and used to estimate the impact of the nuclear weapons fallout, as well as the Chernobyl accident, on the populations in the three countries. During this work, it has become evident that the existing data can be analysed to a greater extent than has been possible within the frames of this project.
For example, the issue of modelling uptake of caesium from the food chain, based on ecological half-life or aggragated transfer function, Tag(t), in areas where there are reminiscences of previous fallout occasions of the same extent as the present fallout, has to be further investigated.
Modelling is a useful tool to check our state of knowledge and reveal gaps in data, which have to be considered in case of future fallout events. This also emphasizes the need for maintaining continuous time-series of measurements on atmospheric deposition as well as the body-burdens in various populations, especially among those known in advance to be sensitive to radioecological transfer of fission products.
Keywords:
whole-body measurements, fallout, radiocaesium, aggregated transfer function
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