Sensitivity analysis of meteorological parameters to the airborne radioactive materials diffusion under normal operation

Abstract

In order to reduce the impact of airborne radioactive contaminants on human health, the sensitivity of different meteorological parameters and seasons were systematically analyzed based on the radioactive source term data of the AP1000 reactor, with a view to derive the optimal meteorological conditions for the discharge of airborne radioactive contaminants. The results show that wind speed, precipitation and stability all have a certain degree of sensitivity to changes in radiation dose, but stability is the most sensitive, and stability E is more favorable to discharge when precipitation is 0 and wind speed is more than 1.1 m/s. During the four seasons, late summer to the middle autumn were more favorable for emissions.