A Study on the Contaminated Food Interdiction for the Public following a Severe Accident of Nuclear Power Plants

In this study, when the contamination by a unit deposition of unit area occurs by the released gaseous materials during a severe accident of NPP, the activity concentrations of foodstuffs for each radionuclide were calculated. As the accident date gets closer to the harvest date, the activity concentrations of foodstuffs were increased for all radionuclides and most foodstuffs. But unlike other foodstuff, the value of milk was temporarily decreased by the date of hay cutoff. The cumulative activity concentration for 10 years was obtained for each foodstuff and radionuclide. While the values of crop products had similar tendency by identical dynamic model, those of animal products were distinct. The activity concentrations for each radionuclide and crop product were similar, but those for animal products were differed from the TCO for each radionuclide. For more reliable data, the detailed calculation for the growing season of each crop and the experiments for the coefficients of each foodstuff and radionuclide are required. Additionally the activity concentrations of fish and water should be considered to figure out the more reliable allowable ground concentration.