Evaluation of excess lifetime cancer risk caused by external exposure due to natural radioactivity in Bolu, Turkey
1Faculty of Arts and Sciences, Yıldız Technical University, ISTANBUL
2Faculty of Arts and Sciences, Akdeniz University, ANTALYA
3Engineering Faculty , Yalova University, YALOVA
2Faculty of Arts and Sciences, Akdeniz University, ANTALYA
3Engineering Faculty , Yalova University, YALOVA
Sigma J Eng Nat Sci 2020; 38(2): 945-954
Abstract
In this study, the gamma dose rates in outdoor air at seventy-seven points around Bolu province were meausured using a counter (Eberline, ESP-2). Radiological hazards were evaluated by estimating the excess lifetime cancer risks caused by external exposure. The gamma dose rates measured varied from 11 to 68 nGyh-1with an average value of 22 nGy h-1. The avarege value of the corresponding outdoor annual effective dose and the excess lifetime cancer risk was found as 27.23 μSv and 0.95x10−4, respectively. These values could be compared to other studies which existed in Turkey and also in the world.
Keywords: Outdoor gamma dose rate, natural radioactivity, scintillation detector, AEDE, cancer risk, Bolu.
