선량 환산 관례를 이용한 생애유효선량 및 라돈피폭 위험도예측: 대학 강의실 라돈농도 중심으로 = Prediction for the Lifetime Effective Dose and Radon Exposure Risk by using Dose Conversion Convention: Base on the Indoor Radon Concentration of Lecture Room in a University

다국어 초록 (Multilingual Abstract)

The indoor radon concentration was measured in the lecture room of the university and the radon concentration was converted to the amount related to the radon exposure using the dose conversion convention and compared with the reference levels for the radon concentration control. The effect of indoor radon inhalation was evaluated by estimating the life effective dose and the risk of exposure. To measure the radon concentration, measurements were made with a radon meter and a dedicated analysis Capture Ver. 5.5 program in a university lecture room from January to February 2018. The radon concentration measurement was carried out for 5 consecutive hours for 24 hours after keeping the airtight condition for 12 hours before the measurement. Radon exposure risk was calculated using the radon dose and dose conversion factor. Indoor radon concentration, radon exposure risk, and annual effective dose were found within the 95% confidence interval as the minimum and maximum boundary ranges. The radon concentration in the lecture room was 43.1-79.1 Bq/m3, and the maximum boundary range within the 95% confidence interval was 77.7 Bq/m3. The annual effective dose was estimated to be 0.20-0.36 mSv/y (mean 0.28 mSv/ y). The life-time effective dose was estimated to be 0.66-1.18 mSv (mean 0.93 ± 0.08 mSv). Life effective doses were estimated to be 0.88-0.99 mSv and radon exposure risk was estimated to be 12.4 out of 10.9 per 100,000. Radon concentration was measured, dose effective dose was evaluated using dose conversion convention, and degree of health hazard by indoor radon exposure was evaluated by predicting radon exposure risk using nominal hazard coefficient.
It was concluded that indoor living environment could be applied to other specific exposure situations.

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