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Validation of I ecological transfer models and thyroid dose assessments using Chernobyl fallout data from the Plavsk district, Russia |
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| Authors: | I. Zvonova P. Krajewski M. Ammann V. Filistovic B. Kanyar S.L. Simon D. Webbe-Wood |
| Affiliation: | a Research Institute of Radiation Hygiene, Ul. Mira 8, St. Petersburg 197101, Russia b Central Laboratory for Radiological Protection, Konwaliowa 7, PL 03-194 Warsaw, Poland c IAEA, Wagramer Strasse 5, P.O. Box 100, A-1400 Viena, Austria d Radiation & Nuclear Safety Authority (STUK), P.O. Box 14, Laippatie 4, 00881 Helsinki, Finland e Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Centre de Cadarache, B.P. 3, 13115 Saint Paul-lez-Durance, Cedex, France f Institute of Physics, Av. Savanoriu No. 231, LT-2300 Vilnius, Lithuania g Japan Atomic Energy Agency (JAEA), 2-4 Shirakata Shirane, Tokai-mura, Ibaraki-ken 319-1195, Japan h University of Pannonia, Egyetem u. 10, 8200 Veszprém, Hungary i Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, 20892-7301 Bethesda, MD, USA j Medical Radiological Research Center (MRRC RAMS), Koroleva str. 4, 249036 Obninsk, Kaluga region, Russia k Food Standards Agency (FSA), Aviation House, 125 Kingsway, WC2B 6NH London, United Kingdom |
| Abstract: | Within the project “Environmental Modelling for Radiation Safety” (EMRAS) organized by the IAEA in 2003 experimental data of 131I measurements following the Chernobyl accident in the Plavsk district of Tula region, Russia were used to validate the calculations of some radioecological transfer models. Nine models participated in the inter-comparison. Levels of 137Cs soil contamination in all the settlements and 131I/137Cs isotopic ratios in the depositions in some locations were used as the main input information. 370 measurements of 131I content in thyroid of townspeople and villagers, and 90 measurements of 131I concentration in milk were used for validation of the model predictions.A remarkable improvement in models performance comparing with previous inter-comparison exercise was demonstrated. Predictions of the various models were within a factor of three relative to the observations, discrepancies between the estimates of average doses to thyroid produced by most participant not exceeded a factor of ten. |
| Keywords: | Chernobyl accident Iodine-131 Environment modeling Models validation Population Thyroid dose |
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