Corrosion assessment for spent nuclear fuel disposal in crystalline rock, using variant cases of hydrogeological modeling

• 作者: Chi-Che Hung Chi-Jen Chen Fraser King Wei-Ting Lin Yuan-Chieh Wu Yun-Chen Yu
• 来源期刊: 核技术（英文版）
• 年，卷（期）: 2020,（12）
• 所属期刊栏目: NUCLEAR ENERGY SCIENCE AND ENGINEERING
• 页码范围: 20-31
• 页数: 12页
• 语种: 英文

摘要

This paper presents a corrosion assessment of copper spent nuclear fuel disposal canisters in crystalline rock, using hydrogeological modeling. A simplified approach is considered, to avoid complex and time-con-suming computer simulations. This simplified case is pre-sented as a base case, with changes in the hydrogeological parameters presented as variant cases. The results show that in Taiwan’s base case, decreasing the hydraulic con-ductivity of the rock or decreasing the hydraulic conduc-tivity of dikes results in a shorter transport path for sulfide and an increase in corrosion depth. However, the estimated canister failure time is still over one million years in the variant cases.