Naz Zeynep ATEŞ, Kübra BAYRAK, M. Ergun TURGAY, Erol KAM

EVALUATION OF EXCESS LIFETIME CANCER RISK CAUSED BY EXTERNAL EXPOSURE DUE TO NATURAL RADIOACTIVITY IN BOLU, TURKEY

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,

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