• Title, Summary, Keyword: 중수로원전

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Review on the Management for Radioactive Effluent and Methodology for Setting of Derived Release Limits at Pressurized Heavy Water Reactors in Korea (중수로원전 방사성유출물 관리와 유도배출한계 설정방법에 대한 고찰)

  • Kim, Hee-Geun;Kong, Tae-Young;Jeong, Woo-Tae;Kim, Seok-Tae
    • Journal of Radiation Protection and Research
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    • v.35 no.4
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    • pp.172-177
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    • 2010
  • The radioactive effluents from pressurized heavy water reactors (PHWRs) are relatively larger than those from pressurized water reactors (PWRs). Futhermore, radioactive effluents from PHWRs are released continuously. Thus, the discharge of radioactive effluents is strictly controlled. To do this, radiation detectors are installed at stacks of reactor buildings to monitor the concentration of radioactive effluents in real-time. Derived release limits (DRLs) of annual discharge are also set up for each radionuclide and effluents are rigidly controlled not to exceed those limits. In this paper, the discharge process of radioactive effluents, the standard for establishment of DRL and its methodology, and currents status for PHWRs were reviewed.

Analysis of Metabolism and Effective Half-life for Tritium Intake of Radiation Workers at Pressurized Heavy Water Reactor (중수로원전 종사자의 삼중수소 체내섭취에 따른 인체대사모델과 유효반감기 분석)

  • Kim, Hee-Geun;Kong, Tae-Young
    • Journal of Radiation Protection and Research
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    • v.34 no.2
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    • pp.87-94
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    • 2009
  • Tritium is the one of the dominant contributors to the internal radiation exposure of workers at pressurized heavy water reactors (PHWRs). This nuclide is likely to release to work places as tritiated water vapor (HTO) from a nuclear reactor and gets relatively easily into the body of workers by inhalation. Inhaled tritium usually reaches the equilibrium of concentration after approximately 2 hours inside the body and then is excreted from the body with a half-life of 10 days. Because tritium inside the body transports with body fluids, a whole body receives radiation exposure. Internal radiation exposure at PHWRs accounts for approximately 20-40% of total radiation exposure; most internal radiation exposure is attributed to tritium. Thus, tritium is an important nuclide to be necessarily monitored for the radiation management safety. In this paper, metabolism for tritium is established using its excretion rate results in urine samples of workers at PHWRs and an effective half-life, a key parameter to estimate the radiation exposure, was derived from these results. As a result, it was found that the effective half-life for workers at Korean nuclear power plants is shorter than that of International Commission on Radiological Protection guides, a half-life of 10 days.

연구실 탐방 - 한국원자력연구소 중수로용 개량핵연료개발팀

  • Korean Federation of Science and Technology Societies
    • The Science & Technology
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    • v.32 no.3
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    • pp.30-31
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    • 1999
  • 우리나라는 세계에서 유일하게 경수로와 중수로를 모두 보유하고 있는 국가로 현재 14기의 원전의 기당되고 있다. 지난 85년 핵연료 국산화개발에 성공한 바 있는 원자력연구소 중수로용 개량핵연료개발팀은 최근 월성 원자력발전소와 같은 중수로에 쓰이는 개량핵연료를 개발해 이 분야에서 세계 최고 수준의 기술을 확보하게 되었다. 개발팀의 책임자인 석호천박사는 "우리의 기술력이 세계 최고 수준의 캐나다와 어깨를 나란히 할 수 있게 된 것은 20여명의 팀원들이 뭉쳐 10~20년을 끈질기게 연구해온 결과"라곰 말했다.

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