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NTIS 바로가기Journal of nuclear fuel cycle and waste technology = 방사성폐기물학회지, v.17 no.1, 2019년, pp.1 - 13
민병일 (한국원자력연구원) , 양병모 (한국원자력연구원) , 김지윤 (한국원자력연구원) , 박기현 (한국원자력연구원) , 김소라 (한국원자력연구원) , 이정렬 (성균관대학교) , 서경석 (한국원자력연구원)
The accident at the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) resulted in the deposition of large quantities of radionuclides over parts of eastern Japan. Radioactive contaminants have been observed over a large area including forests, cities, rivers and lakes. Due to the strong adsorption of r...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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방사성 핵종의 환경 유출로 인한 사고평가는 어떻게 분류되는가? | 방사성 핵종의 환경 유출로 인한 사고평가는 크게 초기 평가와 중장기 평가로 나뉠 수 있다. 초기 평가 시에는 정확한 대기, 해양 이송자료를 기반으로 방사성 핵종의 대기, 육상, 해양 등의 확산 범위, 인체 영향을 평가하는 것이 중요하다. | |
방사성 핵종의 수직분포 특징은 무엇인가? | 체르노빌의 경우 토사 표층에서 수직 20 m 깊이 내에 침적된 총 방사성 핵종의 90%가 존재한다고 발표된 바 있다[12]. 방사성 핵종의 수직분포는 초반 1~2년은 Exponential 함수로 표현이 가능하지만, 더 장기적으로는 Hyperbolic secant 함수로 표현되는 것이 후쿠시마 인근의 관측 자료에서는 더 신뢰성을 갖는다고 한다[13]. 유사하게 Gauss함수와 유사한 모델을 적용한 연구에서도 Exponential 함수로 표현하는 것에 대한 신뢰성에 의문을 제기된 바 있다[14]. | |
방사성 물질의 특성은 무엇인가? | 이러한 방사성 물질은 숲, 도시, 하천, 호수를 포함한 넓은 범위에서 관측되고 있다. 방사성 세슘의 토양 입자에 강하게 흡착하는 특성 때문에 방사성 세슘은 침식된 토사와 함께 이동하여, 인구가 밀집한 하천 하류지역으로 그리고 연안으로 서서히 이동한다. 본 연구에서는 수생환경의 오염된 토사의 이동을 재현하기 위한 수치모델을 개발하고, 그 성과의 일부를 한국원자력연구원 내에 위치한 침식된 토사 관측 장비에서 관측된 결과와 비교하였다. |
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