• Title/Summary/Keyword: HLW radioactive waste

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Conceptual Design for Repackaging of PWR Spent Nuclear Fuel (경수로 사용후핵연료 재포장 개념(안) 수립)

  • Sang-Hwan Lee;Chang-Min Shin;HyunGoo Kang;Chun-Hyung Cho;HaeRyong Jung
    • Journal of Radiation Industry
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    • v.17 no.4
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    • pp.519-532
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    • 2023

  • Spent nuclear fuel(SNF) is stored in nuclear power plants for a certain period of time and then transported to an interim storage facility. After that, SNF is finally repackaged in a disposal canister at an encapsulation plant for final disposal. Finland and Sweden, leading countries in SNF disposal technology, have already completed designing of spent fuel encapsulation plant. In particular, the encapsulation plant construction in Finland is near completion. When it comes to South Korea, as the amount of SNF production and disposal plan is different from those in Finland and Sweden, it is difficult to apply the concepts of these contries as is. Therefore, it is necessary to establish the spent fuel repackaging concept and to derive each operating and repackaging procedures by considering annual disposal plan of South Korea. The results of this study is expected to be used to establish the concept of optimized encapsulation plant through further research.

  • https://doi.org/10.23042/radin.2023.17.4.519 인용 PDF

A review of the features, events, and processes and scenario development for Korean risk assessment of a deep geological repository for high-level radioactive waste

  • Kibeom Son;Karyoung Choi;Jaehyeon Yang;Haeram Jeong;Hyungdae Kim;Kunok Chang;Gyunyoung Heo
    • Nuclear Engineering and Technology
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    • v.55 no.11
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    • pp.4083-4095
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    • 2023

  • Currently, various research institutes in Korea are conducting research to develop a safety case for deep geological repository for high-level radioactive waste (HLW). In the past, low and intermediate-level waste (LILW) was approved by a regulatory body by performing a post-closure safety assessment, but HLW has different disposal characteristics and safety objectives are different. Therefore, in the case of HLW, safety assessment should be performed based on these changed conditions, and specific procedures are also under development. In this paper, the regulatory status of prior research institutes, feature, event and process (FEP) and scenario development cases were investigated for well-organized FEP and scenario development methodologies. In addition, through the results of these surveys, the requirements and procedures necessary for the FEP and scenario development stage during the safety assessment of repository for HLW were presented. These review results are expected to be used to identify the overall status of previous studies in conducting post-closure risk assessment for HLW repository, starting with identifying regulatory requirements, the most basic element.

  • https://doi.org/10.1016/j.net.2023.07.027 인용 PDF