Applying IAEA Simplified Atmospheric Dispersion Model as a training tool for Technical Support Organization Capacity Building Courses
DOI:
https://doi.org/10.48165/jntas.2026.14.01.03Keywords:
atmospheric dispersion parameters – stability classes, simplified dispersion codes, stack parameters, TSO capacity buildingAbstract
In addition to its scientific and technical research duties, the Nuclear and Radiological Safety Research Center (NRSRC) is currently working hard to strengthen its role to become a technical support organization on the both national and international levels, in cooperation with the IAEA, in the fields of nuclear and radiation facilities as well other different energy sources. The Siting and Environmental department belonging to NRSRC, is interested to develop training programs suitable for new students and trainees to use airborne dispersion codes for both nuclear and radiation facilities and non-nuclear sources. This helps them understand how to deal with these issues and calculate, estimate, and assess the risks resulting from these facilities. Based on this principle, SCREEN 3 model-originally developed by the U.S. Environmental Protection Agency- for atmospheric dispersion industrial applications - was used to evaluate the atmospheric dispersion parameters, taking into account different scenarios in terms of (emission rate, stack height and inside diameter, stack exit velocity and exit temperature, ambient air temperature, receptor height and atmospheric stability) which are the necessary data to calculate the worst concentration of the released pollutants at the receptor points, taking into account the topography of the site surrounding the facility. The results showed that stable conditions (F) shifted peaks to larger distances (1737–7880 m) with lower concentrations, whereas unstable conditions (A) produced peak concentrations close to the source (500–1041 m).
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