Analysis of natural radioactivity in Yatağan coal – fired power plant in Turkey

E-ISSN： 2100-014x|154|issue|01009-01009

ISSN： 2100-014x

Source： EPJ Web of Conference, Vol.154, Iss.issue, 2017-09, pp. : 01009-01009

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Abstract

Use of the coal in order to generate electricity increases the exposure of people to radiation. In this paper, the activity concentrations of nuclides ²²⁶Ra, ²³²Th and ⁴⁰K in samples of coal and bottom ash from the Yatagan Coal–Fired thermal power plant determined using gamma ray spectrometer with a NaI(Tl) scintillation detector. The mean activity concentrations of ²²⁶Ra, ²³²Th, and ⁴⁰K in the coal were found to be 37.2±2.8 Bqkg^-1, 51.8±3.4 Bqkg^-1 and 166.7±11.1 Bqkg^-1, respectively. Whereas in the bottom ashes, the concentrations of the corresponding radionuclides were found to be 62.2±5.6 Bqkg^-1, 87.4±5.9 Bqkg^-1 and 221.0 ±12.5 Bqkg^-1, respectively. The findings show that bottom ashes show higher activity concentrations of related radionuclide to coal samples. The absorbed gamma dose rate in outdoor air DR_OUT and annual effective dose rate (AED) from coal were calculated to define radıologıcal rısk. The average findings of annual effective doses were detected as 68.6±5.1 μSvy^-1 and 110.3±11.2 μSvy^-1, respectively.