عنوان مقاله [English]
As we know the nuclear reactors in normal operating conditions, always allowable amount of radioactive materials release into environment according to the Thus, nuclear reactors protections have particular important from the health physics aspect. The main objective of this study is to assess the cancer risk using BIER VII models for various organs due to accidentally released radioactive material from Bushehr nuclear power plant stack and within various distances around of reactor. At first, it is assumed due to the ventilation system of reactor stack perturbation, human error or any other factors removal of radioactive materials will be exceeded. For this purpose, Hotspot2.7 software has been used. Then in the various classes’ atmosphere conditions for the wind average speeds of 2 and 14 m/s and various radii, amount of the total effective dose is calculated. Then, using the BIER VII equations, cancer risk is evaluated for various organs in the various male and female ages. TED has been obtained for different distances and average wind speeds 2 and 14 m/s at the steady state atmospheric condition, the cancer risk for ages upper 5 year is evaluated for the maximum distribution dose around the Bushehr Nuclear Power Plant. According to the obtained results, there is an inverse relation between distributed dose and wind speed. Therefore, amount of the absorbed dose rate by the reactor staff and crowd of the reactor around in the low wind speed is more. Also, cancer risk for ages under 10 year special female is more.