피폭선량 해석과 대기확산계수 결정

• Kim, Byung-Woo (Radiation Environment Division, Korea Advanced Energy Research Institute) ;
• Han, Moon-Hwee (Radiation Environment Division, Korea Advanced Energy Research Institute) ;
• Lee, Young-Bok (Radiation Environment Division, Korea Advanced Energy Research Institute) ;
The exposure doses by the radioactive gaseous effluents from nuclear power plants are investigated in the two cases of normal operation and hypothetical accident. Gaussian equation is adapted in the normal operation as the diffusion model of effluents for long period, which uses annual average meteorological data. But the real time models have been used in the case of accidents which analyze the changes of wind direction and speed. In this study the annual exposure doses by the normal operation of Kori unit 1 during $1977{\sim}1982$ were calculated on the basis of the atmospheric diffusion factor by the Gaussian straight line model. And the image processing technique was suggested as the effective method through the wind tunnel experiments to get the characteristic value of atmospheric diffusion coefficient required especially in the accidents of nuclear power plants.