Study on the Worldwide Estimation of Probabilistic Effective Dose from Intake of Marine Products

Abstract

The public generally requires worldwide environmental protection. A long-term environmental assessment from nuclear fuel cycle facilities to the aquatic environment also becomes more important to utilize nuclear energy globally. Evaluation of long-term risk carried out not only in Japan but also in neighbouring countries is considered to be necessary in order to develop nuclear power industry. In advance of a multinational assessment of nuclear fuel cycle facilities, a worldwide estimation of effective dose due to the atmospheric nuclear tests was carried out by the deterministic and probabilistic methods as a case study. The deterministic calculation made it clear that 14C contributes the most to the averaged effective dose from the intake of marine products due to the atmospheric nuclear tests. The averaged dose for Japanese was very small but it is about 7 times higher than the world average.Although it depended on the deviation of each parameter, the 95th percentile of the effective dose by probabilistic method was calculated as 1/3 to 2/3 of that by the deterministic method in proforma calculation.