Investigation of corrosion processes affecting copper barriers on used nuclear fuel containers for deep geological repositories

影响深层地质处置用核燃料容器铜屏障的腐蚀过程的研究

• 批准号: 580962-2022
• 负责人: Amos, RichardRT
• 金额: $ 1.88万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=751045
• 关键词: Investigation; corrosion; processes; affecting; copper

The Canadian Nuclear Safety Commission (CNSC) is the federal regulator responsible regulating the management of used nuclear fuel (UNF). In the coming years, the CNSC expects the Nuclear Waste Management Organization (NWMO) to submit a proposal for a licence to build and operate a deep geological repository (DGR) for the long-term storage of UNF. The goal of this project, in partnership with the CNSC, is to provide critical scientific information to allow the CNSC to effectively evaluate the NWMO proposal. In particular, this research will investigate the corrosion of copper in the DGR environment and evaluate whether a 3 mm copper coating on UNF storage containers can effectively mitigate corrosion processes and maintain the integrity of the UNF storage container over a lifespan of one million years. This project will include four main tasks; 1) a thorough literature review of copper corrosion studies to identify knowledge gaps and uncertainties, 2) conduct detailed column experiments to further refine the understanding and rates of copper corrosion processes, 3) develop numerical models to simulate copper corrosion processes in the DGR environment and calibrate models to available data, and 4) use numerical models to provide forecasts of long-term copper corrosion. This research will aide in the CNSC's decision making process and provide critical information on copper corrosion for the international nuclear waste management community.

加拿大核安全委员会 (CNSC) 是负责监管废核燃料 (UNF) 管理的联邦监管机构。未来几年，CNSC 预计核废料管理组织 (NWMO) 将提交一份关于建造和运营用于长期储存 UNF 的深层地质处置库 (DGR) 的许可证的提案。该项目的目标是与 CNSC 合作，提供关键的科学信息，使 CNSC 能够有效评估 NWMO 提案。特别是，这项研究将调查铜在 DGR 环境中的腐蚀情况，并评估 UNF 存储容器上的 3 毫米铜涂层是否可以有效减轻腐蚀过程并在 UNF 存储容器一百万年的使用寿命内保持完整性。该项目将包括四项主要任务； 1) 对铜腐蚀研究进行彻底的文献综述，以确定知识差距和不确定性，2) 进行详细的柱实验，以进一步完善对铜腐蚀过程的理解和速率，3) 开发数值模型来模拟 DGR 环境中的铜腐蚀过程，以及根据可用数据校准模型，4) 使用数值模型提供长期铜腐蚀的预测。这项研究将有助于 CNSC 的决策过程，并为国际核废料管理界提供有关铜腐蚀的关键信息。