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

Ates N. Z., BAYRAK K., Turgay M. E., KAM E.

SIGMA JOURNAL OF ENGINEERING AND NATURAL SCIENCES-SIGMA MUHENDISLIK VE FEN BILIMLERI DERGISI, vol.38, no.2, pp.945-954, 2020 (ESCI) identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 2
  • Publication Date: 2020
  • Journal Name: SIGMA JOURNAL OF ENGINEERING AND NATURAL SCIENCES-SIGMA MUHENDISLIK VE FEN BILIMLERI DERGISI
  • Journal Indexes: Emerging Sources Citation Index (ESCI), Academic Search Premier, Directory of Open Access Journals
  • Page Numbers: pp.945-954
  • Keywords: Outdoor gamma dose rate, natural radioactivity, scintillation detector, AEDE, cancer risk, Bolu, ENVIRONMENTAL-RADIOACTIVITY, OUTDOOR RADIOACTIVITY, REGION, CITY
  • Istanbul Technical University Affiliated: No

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 mu Sv and 0.95x10(-4), respectively. These values could be compared to other studies which existed in Turkey and also in the world.