Authors

Abstract

State-of-the-art dose assessment models were applied to estimate doses to the population in urbanareas contaminated by the Fukushima Daiichi Nuclear Power Plant accident. Assessment resultswere compared among five models, and comparisons of model predictions with actualmeasurements were also made. Assessments were performed using both probabilistic anddeterministic approaches. Predicted dose distributions for indoor and outdoor workers from aprobabilistic approach were in good agreement with the actual measurements. In addition, whenthe models were applied to assess the doses to the representative person, based on a conceptrecommended by the International Commission on Radiological Protection and in theInternational Atomic Energy Agency Safety Standards, it was evident that doses to therepresentative person obtained with a deterministic approach were always higher than thoseobtained with a probabilistic approach using the same model.