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http://dx.doi.org/10.7733/jnfcwt.2019.17.4.405

An Improved Concept of Deep Geological Disposal System Considering Arising Characteristics of Spent Fuels From Domestic Nuclear Power Plants  

Lee, Jongyoul (Korea Atomic Energy Research Institute)
Kim, Inyoung (Korea Atomic Energy Research Institute)
Choi, Heuijoo (Korea Atomic Energy Research Institute)
Cho, Dongkeun (Korea Atomic Energy Research Institute)
Publication Information
Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT) / v.17, no.4, 2019 , pp. 405-418 More about this Journal
Abstract
Based on spent fuels characteristics from domestic nuclear power plants and a disposal scenario from the current basic plan for high-level radioactive waste management, an improved disposal system has been proposed that enhances disposal efficiency and economic effectiveness compared to the existing disposal system. For this purpose, two disposal canisters concepts were derived from the length of the spent fuel generated from the nuclear power plants. In the disposal scenario, the acceptable amount of decay heat for each disposal container was determined, taking into account the discharge and disposal times of spent fuels in accordance with the current basic plan. Based on the determined decay heat of the two types of disposal canisters and the associated disposal system, thermal stability analyses were performed to confirm their suitability to the proposed disposal system design requirement and disposal efficiency assessment. The results of this study confirm 20% reduction in the disposal area and 20% increase in disposal density for the proposed disposal system compared to the existing system. These results can be used to establish a spent fuel management policy and to design a viable commercial disposal system.
Keywords
Spent fuels; Disposal Canister; Deep geological disposal system; Disposal scenario; Decay heat; Engineered barrier; Thermal requirement; Disposal efficiency;
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Times Cited By KSCI : 2  (Citation Analysis)
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