Validation of environmental transfer models and assessment of the effectiveness of countermeasures using data on 131I releases from Chernobyl

Krajewski, P.; Ammann, Michael; Bartusková, M.; Duffa, Céline; Filistovič, V.; Homma, Tetsuya; Kanyár, B.; Малатова, И.; Nedveckaitė, T.; Simon, Steven L.; Vlasov, O.K.; Webbe-Wood, D.; Звонова, И. А.

doi:10.1016/j.apradiso.2007.11.022

Cited by 10 publications

(3 citation statements)

References 9 publications

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“…The model's input data consists of the following set of dynamic parameters: specific volumetric activities and occurrence forms of radionuclides in the atmosphere, daily average air temperatures from the beginning of the vegetation period, rainfall in the period of and after the fallout deposition, and crop yields in the accident year. This dataset, along with the data on the 137 Cs fallout densities in residential areas (RA), is presented, to a greater or smaller extent, in the EMRAS project scenarios (Krajewski et al 2008;Bartuskova et al 2009; IAEA-TECDOC-1678 2012).…”

Section: Methodsmentioning

confidence: 99%

“…The materials of the Prague and Warsaw scenarios under the IAEA's EMRAS project (Krajewski et al 2008;Bartuskova et al 2009;Zvonova et al 2010;IAEA-TECDOC-16782012 were used in (Vlasov et al 2019) to generate such databases. The key conclusion made in (Vlasov et al 2019) was that the use of mutually consistent data on the rainfall in the major fallout period, the specific volumetric activities of 137 Cs in the atmosphere, and its fallout densities was expected to lead to a major decrease in the uncertainties involved in the 137 Cs and 131 I transport in the food chain and, therefore, to more accurately reconstructed internal exposure doses to the populationresided in the contaminated areas.…”

Section: Introductionmentioning

confidence: 99%

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Radioecological modeling of the 131I activity dynamics in different types of grass vegetation in the Chernobyl accident year

Vlasov¹,

Звонова²,

Krajewski³

et al. 2021

NUCET

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The dynamics of 137Cs and 131I radioactivity in the crude biomass of the grass fodder and food vegetation in Mazovia, Poland, in 1986, the year of the Chernobyl accident, has been estimated. Density of 137Cs and 131I in the soil and vegetation have been measured as a function of rainfall and biomass density as of the time most of the fallout took place. A method is described to convert the instrumental data for the radionuclide activity dynamics in vegetation of one type to vegetation of other types. The results of such data conversion from lawn grass to other types of food and fodder grass vegetation are presented. A method is described for adjusting the dynamics of the radionuclide transport through the food chain components (pasture grass, green meat – milk – human body) by normalizing successively the estimated data in each next component for the average value of the instrumental data ratio to the estimated data in the preceding component. The proposed methods are intended to generate a mutually consistent base of estimated and reconstructed instrumental data: 137Cs and 131I activity in the atmosphere – rainfall – 137Cs fallout density on terrain – specific activity of 131I in vegetation. Such radioecological database will provide for a longer reliability of the estimated 131I specific activity dynamics in milk and in human body and, in the long run, when estimating the thyroid internal exposure doses.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Radioecological modeling of the 131I activity dynamics in different types of grass vegetation in the Chernobyl accident year

Vlasov¹,

Звонова²,

Krajewski³

et al. 2021

NUCET

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“…The IWG Leader was P. Krajewski. The IWG has examined three scenarios using measurement data as described by Krajewski et.al (2008). The present paper describes the IWG’s first study on model validation using the data of the Plavsk scenario.…”

Section: Introductionmentioning

confidence: 99%

Validation of 131I ecological transfer models and thyroid dose assessments using Chernobyl fallout data from the Plavsk district, Russia

Звонова¹,

Krajewski²,

Berkovsky³

et al. 2010

Journal of Environmental Radioactivity

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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.

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Determination of age specific 131I S-factor values for thyroid using anthropomorphic phantom in geant4 simulations

Rahman

Ahmad

Mirza

et al. 2014

Applied Radiation and Isotopes

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Validation of environmental transfer models and assessment of the effectiveness of countermeasures using data on 131I releases from Chernobyl

Cited by 10 publications

References 9 publications

Radioecological modeling of the 131I activity dynamics in different types of grass vegetation in the Chernobyl accident year

Radioecological modeling of the 131I activity dynamics in different types of grass vegetation in the Chernobyl accident year

Validation of 131I ecological transfer models and thyroid dose assessments using Chernobyl fallout data from the Plavsk district, Russia

Determination of age specific 131I S-factor values for thyroid using anthropomorphic phantom in geant4 simulations

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