경주 방사성폐기물 처분시설 주변지역에 대한 주요 방사성 핵종의 방사선 영향 평가
Evaluation of Radiological Impact of Major Radionuclides Around the Gyeongju Radioactive Waste Disposal Facility
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The study has been carried out to evaluate the radiological impact of radioactive waste disposalby analysing radionuclides (137Cs, 90Sr, and 3H) in the various environmental media in Gyeongju LILW (Low-andIntermediate Level Radioactive Waste) repository in Korea. For this purpose, periodic monitoring were conducted ingroundwater, rainwater, soil, agricultural products, seawater, and marine biota to analyze the radionuclide movementsand accumulations. The Results showed that activity concentrations of 137Cs in groundwater and rainwater werebelow Minimum Detectable Activity (MDA). Agricultural products, particularly cabbage, showed elevating 137Cslevels from 2010 to 2012 and then decreased to undetectable levels. The activity concentrations of 90Sr in groundwaterwere detectable at several sites but also decreased with time. In soil and agricultural products, 90Sr levels peakedaround 2014 and significantly decreased afterward. Tritium concentrations were higher in groundwater and rainwater,especially in certain locations, representing rapid dispersion through water pathways. In conclusion the radionuclideconcentrations around the Gyeongju repository remain within safe levels, and this indicates no radiological impactfrom the site. This study emphasizes the importance of preserving environmental monitoring to ensure the safeoperation of radioactive waste disposal facilities.
Abstract
The study has been carried out to evaluate the radiological impact of radioactive waste disposalby analysing radionuclides (137Cs, 90Sr, and 3H) in the various environmental media in Gyeongju LILW (Low-andIntermediate Level Radioactive Waste) repository in Korea. For this purpose, periodic monitoring were conducted ingroundwater, rainwater, soil, agricultural products, seawater, and marine biota to analyze the radionuclide movementsand accumulations. The Results showed that activity concentrations of 137Cs in groundwater and rainwater werebelow Minimum Detectable Activity (MDA). Agricultural products, particularly cabbage, showed elevating 137Cslevels from 2010 to 2012 and then decreased to undetectable levels. The activity concentrations of 90Sr in groundwaterwere detectable at several sites but also decreased with time. In soil and agricultural products, 90Sr levels peakedaround 2014 and significantly decreased afterward. Tritium concentrations were higher in groundwater and rainwater,especially in certain locations, representing rapid dispersion through water pathways. In conclusion the radionuclideconcentrations around the Gyeongju repository remain within safe levels, and this indicates no radiological impactfrom the site. This study emphasizes the importance of preserving environmental monitoring to ensure the safeoperation of radioactive waste disposal facilities.
참고문헌 (17)
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