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J Radiat Prot > Volume 39(1); 2014 > Article
Journal of Radiation Protection 2014;39(1):61-0.
doi: https://doi.org/10.14407/jrp.2014.39.1.061
방사선안전관리 실무: (II) 배기중 및 배수중 배출관리기준의 적용
한국원자력연구원 방사선방호팀
Practical Radiation Safety Control: (II) Application of Numerical Guidance for the Discharges of Radioactive Gaseous and Liquid Effluents
Hyun Ki Kim
Korea Atomic Energy Research Institute, Department of Radiation Protection
Correspondence  Hyun Ki Kim ,Email: hkkim0@kaeri.re.kr
Radioactive materials are in use and have many applications from the generation of electricity to the purposes of research, industry and medicine such as diagnosis and therapy. In the course of their use some of radioactive substances may be discharged into the environment from facilities using the unsealed radioactive materials, which are main artificial sources occurring the public exposure. Discharges are in the form of gases, particles or liquids. This paper provides procedures to estimate the level of the public exposure based on the conservative assumptions and simple calculations in the facility using unsealed liquid sources. They consist of two processes; (1) to calculate maximum concentration of gaseous effluents discharged through the exhaust pipe and average concentration of liquid effluents discharged through the drain of the storage tank, (2) to compare each of them to numerical guidances for the discharges of radioactive gaseous and liquid effluents mentioned in the related notification. For this purpose followings are assumed properly; daily usage, form and dispersion rate of radionuclides, daily amount of radioactive liquid waste and exhaust and drainage equipment. The procedures are readily applicable to evaluate environmental effects by planned effluent discharges from facilities using the unsealed radioactive materials. In addition they may be utilized to obtain practical requirements for radiation safety control necessary for the reductions of the public exposure.
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