کوروش قیصری

The earth's atmosphere is the diffusion and emission track of the pollutions resulting from nuclear power reactor. The radioactive pollutions scattered in different points of a nuclear power plant (with four sources of radioactive pollution under normal conditions) has been investigated. In this respect, the radionuclides I-131 and Cs-137 released from the stacks of the nuclear power plant under consideration, which contains the four reactor units of the VVER-1000 type, have ben simulated. The 3-hours, dialy, monthly and annual average values of pollution concentration have been calculated using the AERMOD code. Using the recorded date in IRIMO report and the Bushehr weather station, the effect of the number of reactor units on pollution concentration has also been considered. Under the normal conditions the simulation results show that pollution concentration for distances about 800-3000 meters (measured from nuclear power plant center) has maximum values.