Radiological Risk Assessment of Radionuclides Releases From Nuclear Research Reactors Through Different Plume Rise Models

Objectives The purpose of this paper is to study the effect of the plume exposure models on the cancer risk at areas around a nuclear research reactor using different Fortran Programs Material and Methods Using models such as the Gaussian Plume Model to assess the distribution of radionuclide spread during research nuclear reactor normal/accident atmospheric dispersion equation are widely used, where radionuclide concentration with different shapes of plume rise, which computation of plume rise is one of the basic aspects for a correct estimation of the transport and dispersion of airborne pollutants and for the evaluation of ground level concentration Results The results indicated that the maximum concentration of Iodine-135 happens at a distance of 165 m, according to the majority of simulations. The greatest dose and danger are often found in the Carson and Moses method. The Gaussian model’s results are more consistent with the observed values. The impact of wind Unstable breezes can enhance ground concentration and dispersion in specific locations. Conclusion Show that the near-source area is the primary source of public exposure after airborne radioactive leaks. Moreover, the observed variation in plume rise models is a reflection of the model-related uncertainty that UNSCEAR identified as a major determinant of radiological risk assessments. The IAEA recommends that safety assessments be made more robust by identifying systematic differences in predicted dose and risk among commonly used dispersion models. This study also supports informed decision-making for radiation protection, siting analysis, and emergency planning zones.