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A Multimodel Framework for Quantifying Flow and Advective Transport Controlled by Earthquake-Induced Canister Failures in a Reference Case for Radioactive Waste Geological Disposal

Author

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  • Yun-Chen Yu

    (Institute of Nuclear Energy Research, Atomic Energy Council, Taoyuan 32546, Taiwan
    Graduate Institute of Applied Geology, National Central University, Taoyuan 32001, Taiwan)

  • Chi-Jen Chen

    (Institute of Nuclear Energy Research, Atomic Energy Council, Taoyuan 32546, Taiwan
    Graduate Institute of Applied Geology, National Central University, Taoyuan 32001, Taiwan)

  • Chih-Cheng Chung

    (Institute of Nuclear Energy Research, Atomic Energy Council, Taoyuan 32546, Taiwan
    Department of Earth Science, National Central University, Taoyuan 32001, Taiwan)

  • Chuen-Fa Ni

    (Graduate Institute of Applied Geology, National Central University, Taoyuan 32001, Taiwan
    Center for Environmental Studies, National Central University, Taoyuan 32001, Taiwan)

  • I-Hsien Lee

    (Center for Environmental Studies, National Central University, Taoyuan 32001, Taiwan)

  • Yuan-Chieh Wu

    (Institute of Nuclear Energy Research, Atomic Energy Council, Taoyuan 32546, Taiwan)

  • Tzu-Yu Lin

    (Institute of Nuclear Energy Research, Atomic Energy Council, Taoyuan 32546, Taiwan
    Graduate Institute of Applied Geology, National Central University, Taoyuan 32001, Taiwan)

Abstract

Characterizing flow and transport for earthquake-induced shear canister failure is critical for the performance and safety assessment of radioactive waste geological disposal. The study presents a modeling framework that integrates multiple models to account for fractures produced by shear displacements, evaluate canister failures, and simulate flow and advective transport in a conceptual repository site based on a selected reference case in an offshore island in western Taiwan. The typical KBS-3 disposal concept associated with 500 realizations of the shear-induced fracture properties is employed to quantify the uncertainty of flow and advective transport in the geological disposal site. The radionuclides in canisters are assumed to migrate through the shear-induced fractures surrounding the deposition holes. The results from 500 realizations show that two types of fractures produce a high potential to destroy canisters induced by the shear displacements. The earliest canister failure time influenced by possible shear movements is 0.23 million years for the reference case. The modeling framework identifies five canisters and the associated shear-induced fractures for flow and advective transport simulations. Based on the results of the density-dependent flow fields, the particle tracking algorithm enables the calculations of flow and transport parameters, including equivalent initial flux, equivalent flow rate, path length, travel time, and flow-related transport resistance for the identified five canisters. These parameters are critical for the performance and safety assessments of buffer erosion and canister corrosion near the disposal repository and the far field of the radioactive waste disposal site.

Suggested Citation

  • Yun-Chen Yu & Chi-Jen Chen & Chih-Cheng Chung & Chuen-Fa Ni & I-Hsien Lee & Yuan-Chieh Wu & Tzu-Yu Lin, 2023. "A Multimodel Framework for Quantifying Flow and Advective Transport Controlled by Earthquake-Induced Canister Failures in a Reference Case for Radioactive Waste Geological Disposal," Energies, MDPI, vol. 16(13), pages 1-26, June.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:13:p:5081-:d:1184154
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    References listed on IDEAS

    as
    1. Yun-Chen Yu & Yu-Hsiang Shen & Tsai-Ping Lee & Chuen-Fa Ni & I-Hsien Lee, 2022. "Numerical Assessments of Flow and Advective Transport Uncertainty for Performance Measures of Radioactive Waste Geological Disposal in Fractured Rocks," Energies, MDPI, vol. 15(15), pages 1-26, August.
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