Search | Korea Science

Minseop Kim;Minsoo Lee;Jinseop Kim;Seok Yoon
- Nuclear Engineering and Technology
- /
- v.55 no.11
- /
- pp.4173-4180
- /
- 2023
The stability of engineered barriers in high-level radioactive waste disposal systems can be influenced by the decay heat generated by the waste. This study focuses on the thermal analysis of various canister designs to effectively lower the maximum temperature of the engineered barrier. A numerical model was developed and employed to investigate the heat dissipation potential of copper rings placed across the buffer. Various canister designs incorporating copper rings were presented, and numerical analysis was performed to identify the design with the most significant temperature reduction effect. The results confirmed that the temperature of the buffer material was effectively lowered with an increase in the number of copper rings penetrating the buffer. Parametric studies were also conducted to analyze the impact of technical gaps, copper thickness, and collar height on the temperature reduction. The numerical model revealed that the presence of gaps between the components of the engineered barrier significantly increased the buffer temperature. Furthermore, the reduction in buffer temperature varied depending on the location of the gap and collar. The methods proposed in this study for reducing the buffer temperature hold promise for contributing to cost reduction in radioactive waste disposal.
https://doi.org/10.1016/j.net.2023.07.039 인용 PDF

김성기;이종열;최종원;한필수
- Proceedings of the Korean Radioactive Waste Society Conference
- /
- 2003.11a
- /
- pp.636-641
- /
- 2003
The purpose of this study is to analyse the ratio of cost object in terms of the disposal cost estimation. According to the results, the ratio of operating cost is the most significant object in total cost. There are a lot of differences between the disposal costs and product costs in view of their constituents. While the product costs may be classified by the direct materials cost, direct manufacturing labor cost, and factory overhead, the disposal cost factors should be constituted by the technical factors and the non-technical factors.
PDF