Assessment of natural radioactivity and radiological risk of sediment samples in Karacaören II dam Lake, Isparta/Turkey

Authors : Gökhan APAYDIN, Oğuz Kağan KOKSAL, Erhan CENGIZ, Engin TIRASOGLU, Hasan BALTAŞ, Kazım KARABULUT, Ömer SÖĞÜT

Pages : 28-35

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Publication Date : 2019-03-28

Article Type : Research Paper

Abstract :This research aimed to assess natural radioactivity levels in lake sediment of Karacaören II Dam. In this study sediment samples were collected from 12 station of lake in May, 2016. The natural radionuclides 226 Ra, 232 Th and 40 K were measured with a coaxial HPGe detector (Canberra, GC 1519 model) of 15% relative efficiency and a resolution of 1.9 keV at the 1332 keV gamma of  60 Co. In order to assess the radiological hazards resulting from natural radioactivity, radium equivalent activities ( Ra eq ), absorber dose rate ( D ), internal ( H in ) and external ( H ex ) hazard index, annual effective dose rate ( AED ) and Excess life time cancer risk ( ELCR ) were calculated and compared with recommended values of international organizations.
Keywords : Karacaören II Dam Lake, Sediment, Natural Radioactivity, Absorber Dose Rate