Abstract
The amount of released radionuclide from Tehran's research reactor and radioisotope laboratory stacks and their impact have been studied. The aim of this work is to determine the amount and type of radioactive materials and to estimate their risk once they are released into the environment. To perform the above two tasks, CAP88-PC computer code which simulates Gaussian dispersion air transport Plume Model and laboratory analysis of air samples around the site were used. Computer code input data are provided by the Safety Analysis Report and Reactor Annual Reports. Air samples were collected using the filter and sampling pumps and analyzed by gamma spectroscopy counter. Results of computer program showed that the risk of cancer death (lifetime risk) is below the regulatory limit. Results of analysis of available radionuclide in the air samples also showed that concentrations are close to the background and confirm the code results.
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