• Title/Summary/Keyword: KAERI Underground Research Tunnel

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Concept design and site characterization for the Underground Disposal Research Tunnel at KAERI site (원자력연구소내 지하 처분연구 시설 건설을 위한 지반조사 및 개념설계)

  • 권상기;박정화;조원진
    • Tunnel and Underground Space
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    • v.14 no.3
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    • pp.175-187
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    • 2004
  • 고준위방사성폐기물 처분의 경우 심부 암반에 만들어진 처분장에 영구 처분하는 것이 최선의 방안으로 여겨지고 있다. 하지만 지하 심부의 암반에 대한 물리적, 화학적, 역학적, 열적, 수리적 물성과 이들과 핵종 이동의 관계, 처분환경에서의 공학적 방벽 및 암반의 거동이 처분장 안정성 및 안전성에 미치는 영향 등을 파악해야하는 어려움이 따른다. 특히 고준위폐기물 처분의 경우 장기간의 안전성을 고려해야하기 때문에 자연방벽과 공학적 방벽의 시간에 따른 거동변화도 고려하여야 할 필요가 있다. (중략)

Research Status on the Radionuclide and Colloid Migration in Underground Research Facilities (지하연구시설에서 핵종 및 콜로이드 이동 연구 현황 분석)

  • Baik, Min-Hoon;Lee, Jae-Kwang;Choi, Jong-Won
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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    • v.7 no.4
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    • pp.243-253
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    • 2009
  • In this study, research status on radionuclide and colloid migration in underground research facilities including KURT (KAERI Underground Research Tunnel) was investigated. Some foreign underground research facilities constructed in crystalline rock formations such as granite were briefly introduced and compared. International joint researches concerned with the radionuclide and colloid migration were investigated particularly for the Grimsel Test Site (GTS) and $\ddot{A}$sp$\ddot{o}$ Hard Rock Laboratory by analyzing major research items, on-going research projects, and future plans.

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Basic Design of the Underground Research Tunnel for HLW disposal Research (고준위폐기물 처분연구를 위한 지하연구시설에 대한 기본설계)

  • 권상기;박정화;조원진;한필수
    • Proceedings of the Korean Radioactive Waste Society Conference
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    • 2004.06a
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    • pp.199-207
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    • 2004
  • In order to develop a safe geological disposal concept for the HLW from the nuclear power plants in Korea, it is necessary to evaluate the safety of the disposal concept in an underground research tunnel in the same geological formation as the host rock mass. The design concept of a research tunnel depends on the actual disposal concept, repository geometry, experiments to be carried at the tunnel, and geological conditions. In this study, geological investigation had been carried out to develop the basic design of the small scale underground disposal research tunnel in KAERI.

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Corrosion behaviors of SS316L, Ti-Gr.2, Alloy 22 and Cu in KURT groundwater solutions for geological deep disposal

  • Gha-Young Kim;Junhyuk Jang;Minsoo Lee;Mihye Kong;Seok Yoon
    • Nuclear Engineering and Technology
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    • v.54 no.12
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    • pp.4474-4480
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    • 2022
  • Deep geological disposal using a multibarrier system is a promising solution for treating high-level radioactive (HLRW) waste. The HLRW canister represents the first barrier for the migration of radionuclides into the biosphere, therefore, the corrosion behavior of canister materials is of significance. In this study, the electrochemical behaviors of SS316L, Ti-Gr.2, Alloy 22, and Cu in naturally aerated KAERI underground research tunnel (KURT) groundwater solutions were examined. The corrosion potential, current, and impedance spectra of the test materials were recorded using electrochemical methods. According to polarization and impedance measurements, Cu exhibits relatively higher corrosion rates and a lower corrosion resistance ability than those exhibited by the other materials in the given groundwater condition. In the anodic dissolution tests, SS316L exposed to the groundwater solution exhibited the most uniform corrosion, as indicated by its surface roughness. This phenomenon could be attributed to the extremely low concentration of chloride ions in KURT groundwater.