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J. Radiat. Prot. Res > Volume 40(4); 2015 > Article
Journal of Radiation Protection and Research 2015;40(4):267-276.
doi: https://doi.org/10.14407/jrp.2015.40.4.267
국내 원전 삼중수소 방사능 배출 및 환경 거동에 대한 분석 및 고찰
한상준1,2, 이경진1, 염정민1, 신대윤1
1조선대학교
2월성원전·방폐장민간환경감시기구
A Study and Analysis on Tritium Radioactivity and Environmental Behavior in Domestic NPPs
Sang Jun Han1,2, Kyeong Jin Lee1, Jeong Min Yeom1, Dae Tewn Shin1
1Chosun University
2Wolseong Nuclear Facility Environment & Safety Monitoring Committee
Correspondence  Sang Jun Han ,Email: safety1028@wsnesc.or.kr
Received: September 30, 2015; Revised: November 29, 2015   Accepted: December 1, 2015.
ABSTRACT
Several analyses on tritium that is the largest release of gas or liquid radioactive waste from domestic PWR and PHWR NPPs were carried out, such as release comparison, directional frequency of wind and tritium behavior changes in environmental samples. First of all, analysis result showed that tritium released from PHWR was more than ten times as gas and double to three times as liquid in comparison to PWR in 2013. Independent release management in NPP units is needed to precisely control and analyze tritium, since there were 2 units of some NPPs having the same amount of release during analysis. In analysis on frequency of wind direction, average range showed 1.7 to 11.5% by 16-point compass. In case of analysis on sampling points by wind direction, Result showed most of the sampling points are right in places. However, There are some areas needed to examine. In analysis on tritium concentration changes in environmental samples, tritium concentration near NPPs was higher than one far away from NPPs. In case of environmental samples far from PWR, a trace of tritium occur. While, tritium concentration near NPPs was more than or equal to one further from PHWR. In conclusion, tritium occurs considerably in PHWR and is lower than standard in samples. but, it is still detected. Therefore, it is needed to strengthen control in system in NPPs and to consistently monitor tritium in environment.
Keywords: Radioactive waste, Tritium, Release, Directional frequency of wind, Environmental sample
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Determination of Minimum Detectable Activity in Environmental Samples  1999 ;24(3)
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