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J Radiat Prot > Volume 38(4); 2013 > Article
Journal of Radiation Protection 2013;38(4):208-0.
doi: https://doi.org/10.14407/jrp.2013.38.4.208
방사능 확산 검증을 위한 악기상 조건에서의 추적자 야외확산 실증실험
한문희;김은한;정효준;정해선;박미선;황원태;
Field Tracer Experiments under Severe Wether Conditions for the Validation of the Dispersion of Radioactive Materials
Han, Moon Hee;Kim, Eun Han;Jeong, Hyo Joon;Jeong, Hae Sun;Park, Mi Sun;Hwang, Won Tae;
ABSTRACT
The suitability of the site criteria is a basic requirement for securing safety of nuclear power plants. The suitability should be confirmed through the estimation of environmental radiation effects at the exclusion area boundary under the severe weather conditions. In this study, field tracer experiments over short range of 1 km radius under severe weather conditions were conducted at flat area in Daejeon. Severe weather conditions are represented with stable atmospheric condition and low wind speed. In general, the condition is appeared at clean night time with weak wind. The analysis of the measured distribution of the released tracer gas shows two big differences between the results of the past experiments conducted under the favorable weather conditions. One is the difficulty of finding the typical distribution of the released tracer gas with peak concentration in the downwind direction. The other one is the appearance of the contour of the concentration of tracer gas at several hundred meters even though the gas released at 10 m height over the ground.
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