Multiple lines of evidence for performance of the canister and waste form in long-term nuclear waste disposal: Reviews |
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| Affiliation: | 1. NEMO Group, Dipartimento Energia, Politecnico di Torino, 10129, Torino, Italy;2. PPPT Department, EUROfusion Consortium, 85748, Garching bei München, Germany;1. School of Nuclear Science and Technology, Xi''an Jiaotong University, Xi''an, Shaanxi, 710049, China;2. Canadian Nuclear Safety Commission, Ottawa, Ontario, Canada;1. Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University, Harbin 150001, China;2. Traffic College, Northeast Forestry University, Harbin, 150040, China;1. Department of Physics & Applied Mathematics, Pakistan Institute of Engineering & Applied Sciences (PIEAS), Nilore, Islamabad 45650, Pakistan;2. Department of Nuclear Engineering, Pakistan Institute of Engineering & Applied Sciences (PIEAS), Nilore, Islamabad 45650, Pakistan |
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| Abstract: | The time scales required for nuclear waste disposal are very large compared with those for other engineering endeavors. Because of this, there are many uncertainties associated with the quantitative performance assessment of canisters containing high-level radioactive waste in a waste form. Multiple lines of evidence can be helpful in building confidence in the long-term behavior (corrosion and dissolution) of the canister and waste form. These lines of evidence are derived from long-term supports and probabilistic models and developed based on shorter term tests, bounding and conservative approaches, and available observations on natural analogs. This paper presents the progress made for important lines of evidence considered in quantitatively assessing radionuclide release behavior from canisters and waste forms. This paper considers risk-significant issues for canisters and waste forms (i.e., risk informed approach) in the probabilistic performance assessment of the disposal system which has also other components such as geology and hydrology. |
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| Keywords: | Nuclear waste Corrosion Radionuclide release Long-term behavior |
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