Methodology on the Safety Goal Setting of Reactor Operation based on the Radiogenic Excess Cancer Risk in Korea
Chang, Si-Young;Chung, Woon-Kwan;
ABSTRACT
By using the Korean demographic data and the modified relative risk projection model given in the Committee on the Biological Effect of Ionizing Radiation (BEIR) report-V under the U.S. National Academy of Science, the radiogenic excess risk in Korean population has been evaluated. On the basis of this risk, a safety goal for the safe operation of domestic nuclear power plants has been further derived in terms of personal dose. The baseline risk of death due to all causes in Korea and the trivial risk level, which the society considers safe, were estimated to be $5.2{times}10^{-3}$ and $5.2{times}10^{-6}$, respectively. The radiogenic excess cancer risk in Korea has been estimated to be $5.2{times}10^{-3}$ for tie case of acute exposure to 0.1 Gy and $3.7{times}10^{-3}$ for the case of chronic lifetime exposure to 1.0 mGy/y. On the basis of these risks estimate, the resulting safety goal for one year opeation of a reactor was 0.05 mSv, which is quite identical with the ALARA guideline prescribed by the USNRC in the Appendix I, 10CFR50.
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