Monitoring and determination of doses of Tehran research reactor staff during with various dosimetees and comparision of their responses

It is a requirement according to ALARA to minimize radiation exposure of radiation workers and the public as low as reasonably achievable. To achieve this goal it is important to consider the following factors: an accurate recognition of radiation sources, measurement of environmental dose and workers' exposure, and reasons for radiation exposure. In this study, entitled "Evaluation of Personnel and Environmental Dose of Tehran Research Reactor's Radiation Workers with Various Dosimeters and Comparison of their Responses," personnel and environmental dose of the Tehran Research Reactor (TRR) was investigated. The personnel dose was evaluated with various dosimeters such as film badge, digital, Rados, pen and neutron dosimeters and the environmental dose was evaluated by using a Rados monitoring network which consisted of a number of dosimeters installed at various locations. The measured dose was then compared with the national and international dose level standards. In conjunction with the personnel dose assessment, a medical examination of the personnel including blood and urine analysis was performed. Final results of this study show that the environmental dose level of various locations of the reactor under monitoring is comparable to the international standards limits and the environmental dose level increase has a direct correlation with the TRR operating power and the release of irradiated samples from the reactor pool. Moreover, the personnel dose of TRR during operating hours did not exceed the standard limits and the results of the medical examinations confirm such findings.