Numerical simulation of plastic collapse of copper-cast iron canister for spent nuclear fuel

Martin, Oliver; Karl-Fredrik, Nilsson; Jakšić, N.

doi:10.1016/j.engfailanal.2008.03.005

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…천연 방벽은 처분 시 설을 둘러싼 자연 암반과 토양의 전반적인 천연 지하구조 를 말한다. 이와 달리 공학적 방벽은 폐기물을 밀봉하기 위한 인공물로서 일반적으로 폐기물을 담은 처분용기(Canister), 완충재(Buffer), 뒷채움재(Backfill)가 주로 검토되고 있다 (Martin et al, 2007). 즉, 1) 고준위 방사성 폐기물 펠렛 (Pellet)을 금속 캐니스터에 넣어 밀봉하고 2) 처분용기를 넣은 처분공과 처분터널을 벤토나이트 등의 완충재와 뒷채 움재로 채워넣고, 3) 마지막으로 천연 방벽이 방사성 누출 을 방지한다.…”

Section: 본 론unclassified

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Geophysical Survey Applications in Underground Research Laboratories and Deep Disposal Sites of Spent Nuclear Fuel

Jang,

Jeong,

Joung

et al. 2023

J. Korean Soc. Miner. Energy Resour. Eng.

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To safely dispose high-level radioactive wastes such as spent nuclear fuel in a repository hundreds of meters deep below the earth's surface, it is critical to verify the disposal process through onsite experiments in an underground research laboratory (URL). From site selection to operational stages, potential pathways for radioactive nuclide leakage into the ecosystem need to be completely delineated considering factors such as fractures and groundwater flow within the bedrock. For this purpose, geophysical survey techniques, which are non-invasive methods, have been actively researched worldwide. Utilization of various geophysical methods can evaluate geological and hydrogeological settings, thermal effects, engineering barriers etc. Analysis on previous geophysical survey cases conducted for URLs as well as repositories showed that geophysical surveys are sufficiently helpful and effective in assessing and managing deep geological repositories. The analysis can be used as fundamental information for the implementation of domestic disposal facilities.

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Section: 본 론unclassified

“…2. Multi-barrier system in deep disposal sites (Martin et al, 2007). (Jeong et al, 2023) (Kwon and Kim, 2017).…”

Section: 본 론mentioning

confidence: 99%

Geophysical Survey Applications in Underground Research Laboratories and Deep Disposal Sites of Spent Nuclear Fuel

Jang,

Jeong,

Joung

et al. 2023

J. Korean Soc. Miner. Energy Resour. Eng.

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“…On such a long time scale, the artificial engineering barriers, e.g., nuclear waste packaging, buffer layers, and surrounding rocks and linings, are likely to experience damage and failure. Coupled with geological structuring, radionuclides may leak and migrate to surrounding rocks and the biosphere of the repository (Martin et al, 2009;Grupa et al, 2017). Once the radionuclides enter the ecosystem, they can cause irreversible radioactive damage and possibly threaten the lives of humans and other organisms (Labib and Harris, 2015;L'Annunziata, 2016;Ahmad et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Law of Nuclide Migration in Clayey Rocks considering Diffusion and Fluid Transport

Chen²,

Chen³

et al. 2022

Front. Earth Sci.

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A core concern in the research on deep geological disposal of high-level radioactive waste is the migration of radionuclides in geological bodies. Most studies on radionuclide migration consider the role of only the rock fissures without incorporating the influence of the rock matrix. In this paper, the rock mass for geological disposal of high-level radioactive waste is regarded as a fissure-pore medium. Considering the influences of radionuclide diffusion and fluid transport on radionuclide migration in the process of disposal, the governing equation of radionuclide migration and evolution in the pore-fissure medium is established. The numerical scheme of the governing equation is given based on the mixed finite volume method (FVM), using our program solution module written in C++. On this basis, the numerical test model with fissures was developed, which analyzed the radionuclide migration law in clayey rocks under various fissure and rock matrix diffusion coefficients and hydraulic conductivities. The simulation results are compared with finite element method results, revealing the superiority of the mixed FVM method in solving problems of radionuclide migration in discontinuous geological bodies containing hiatuses, mutations, and fissures. The study provides a theoretical basis for evaluating the safety, feasibility, and suitability of geological disposal repositories for high-level radioactive waste in terms of radionuclide migration.

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Analyses on Thermal Stability and Structural Integrity of the Improved Disposal Systems for Spent Nuclear Fuels in Korea

Lee¹,

Kim²,

Kim³

et al. 2020

J. of Nucl. Fuel Cycle and waste Technol.

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Numerical simulation of plastic collapse of copper-cast iron canister for spent nuclear fuel

Cited by 3 publications

References 4 publications

Geophysical Survey Applications in Underground Research Laboratories and Deep Disposal Sites of Spent Nuclear Fuel

Geophysical Survey Applications in Underground Research Laboratories and Deep Disposal Sites of Spent Nuclear Fuel

Law of Nuclide Migration in Clayey Rocks considering Diffusion and Fluid Transport

Analyses on Thermal Stability and Structural Integrity of the Improved Disposal Systems for Spent Nuclear Fuels in Korea

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