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Enhancing Nuclear Safety


Research

Publications

Estimation of the Uncertainty in Internal Dose Calculation for Two Contamination Cases


Congress title :IM 2005 - European Workshop on Individual Monitoring of Ionising Radiation 
Congress town :Vienne
Journal title : Radiation Protection Dosimetry Vol 125 issue 1-4 Pages : 548-552

Document type > *Congrès/colloque

Keywords >

Research Unit > IRSN/DRPH/SDI/LEDI

Authors > BLANCHARDON Eric, FRANCK Didier, JOURDAIN Jean-René, KOCHETKOV Oleg, MOLOKANOV Andrey, PANFILOV Alexander

Publication Date > 07/07/2007

Summary

The assessment of internal dose is subject to a large uncertainty due to the limits of measuring technique and to the assumptions made by the expert. Here, we propose an approach to report the confidence interval associated with the evaluated dose. The sources of uncertainties considered so far include the date of intake, the physico-chemical characteristics of the radioactive material, the counting error and the stochastic variability of excretion. Three successive levels of approximation are suggested, depending on the expected dose, for which increasingly realistic parameter values should be sought and applied. Finally, the results of a Monte Carlo dose calculation are presented in the form of a statistical distribution of possible dose values. This approach has been applied to two cases of uranium and caesium exposure

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