Development of radionuclide monitoring, capture and segregation techniques for safe storage with surveillance and decommissioning of nuclear facilities

开发放射性核素监测、捕获和分离技术，用于安全储存以及核设施的监测和退役

• 批准号: 531488-2018
• 负责人: Harvel, Glenn
• 金额: $ 6.18万
• 依托单位: University of Ontario Institute of Technology
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=692312
• 关键词: Development; radionuclide; monitoring; capture; segregation

Upon completion of the operations of a nuclear power plant, the owner/utility needs to begin a process that transitions from the operating state to a safe storage regime and eventually dismantling of the facility. The duration and activities of the transition stage, safe storage stage, and decommissioning stage are complex and costly. While these activities have been performed in other countries such as USA or UK, Canada has had only limited experience in the full suite of decommissioning activities. The existing methods and technologies do work but have been established for a regulatory regime different than Canada's. As such, there is significant potential in denveloping new methods and techniques that may reduce work time or costs or that are safer and more suitable for the Canadian regulatory and environmental requirements. This work partnered with UNENE and Ontario Power Generation, endeavours to improve the safety and economy of Canadian decommissioning activities by concentrating on technologies that improve site characterization, radioactive species capture to reduce dose, and management of the decontamination processes. One aspect of the work will explore new methods to detect low energy radioactive species that will improve our understanding of the risks involved in the decommissioning work thus providing better site characterization. Another aspect of the work will improve the capture efficiency of aerosol particles that may be produced during dismantling processes. A third aspect of the work will integrate current practises in Canada and world wide into establishing a management system of the processes. This system will allow the utility to select the optimal techniques for each individual environment within the plant. Collectively, the work will allow for a reduction in worker dose through control of secondary contamination and more efficient work processes.The results of the work will provide a direct benefit to a safe decommissioning of the Pickering Nuclear Generating Station and other nuclear facilities in Canada. The students trained in this project will obtain employable skills to assist OPG and other companies as they return nuclear facilities to a retired state.

在完成核电厂的运行后，所有者/公用事业公司需要开始从运行状态过渡到安全储存状态并最终拆除设施的过程。 过渡阶段、安全储存阶段和退役阶段的持续时间和活动是复杂和昂贵的。 虽然美国或联合王国等其他国家也开展了这些活动，但加拿大在全套退役活动方面的经验有限。 现有的方法和技术确实有效，但它们是为不同于加拿大的管理制度建立的。 因此，有很大的潜力，可以减少工作时间或成本，或更安全，更适合加拿大的监管和环境要求的新方法和技术。 这项工作与UNENE和安大略发电公司合作，致力于提高加拿大退役活动的安全性和经济性，重点是改进场地特征、放射性物质捕获以减少剂量和去污过程管理的技术。 这项工作的一个方面将探索探测低能放射性物质的新方法，这将提高我们对退役工作所涉风险的认识，从而提供更好的场地特征。 这项工作的另一个方面将提高拆卸过程中可能产生的气溶胶颗粒的捕获效率。 工作的第三个方面将把加拿大和全世界目前的经验结合起来，建立一个过程的管理系统。 该系统将允许公用事业为工厂内的每个环境选择最佳技术。总的来说，这项工作将通过控制二次污染和更有效的工作流程来减少工作人员的剂量。这项工作的结果将直接有利于皮克林核电站和加拿大其他核设施的安全退役。 在该项目中接受培训的学生将获得就业技能，以协助OPG和其他公司将核设施恢复到退役状态。