Microscale to Macroscale Modelling of the Corrosion in Nuclear Systems

核燃料和屏障材料与水的相互作用是英国的主要关注点，无论是麦格诺克斯、AGR还是外来的，无论是在运行、临时储存还是长期储存。回收和重新安置工作迫在眉睫，新的核建设需要预先公开声明我们的计划。任何能够减轻这些风险并为未来决策提供信息的度量/模型都是受欢迎的。主要目的是提供一种可测试的预测工具，直接影响英国，为乏燃料处置和未来材料部署的决策提供信息。我们计划与现有的合作伙伴（CEA）和英国国内的合作伙伴（兰开斯特，剑桥）合作，以更好地了解乏燃料表面水的基本行为。我们计划与NNL合作开发facfax + COMSOL模型，走向现实世界的系统。然后，我们将设计模拟这些理想场景的实验并对其进行测试。这种方法可以跨越包层和燃料腐蚀的核裂变主题，甚至可以揭示可能在托卡马克聚变装置腐蚀中起作用的重要机制。理想样品将被合成，使用布里斯托尔大学的锕系元素薄膜沉积系统。我们计划使用DCF和萨里离子束中心等设施来研究辐射损伤，我们与日本的KURRI和CLADS设施有合作，这将使高中子通量的薄膜样品能够照射。这个项目将把理论家和实验家联合起来；为后代保留、建立和发展知识基础。

The interaction of nuclear fuel and barrier material with water is a primary concern for the UK, whether Magnox, AGR, or exotic, whether in-operation, stored interim or long-term. Retrievals and relocation operations are imminent and new nuclear build presents the need to state our plans publicly up front. Any measurements/models that mitigate these risks and inform future decisions would be welcome. The principal aim to provide a testable predictive tool should directly impact the UK, informing decision making on spent fuel disposition and future material deployment. We plan to collaborate with current partners (CEA) and within the UK (Lancaster, Cambridge) to better understand the fundamental behaviour of water at the surface of spent fuel. We plan to develop FACSIMILE + COMSOL models in collaboration with NNL, moving towards real-world systems. We will then design experiments that mimic these idealised scenarios and test them. This method can cut across nuclear fission themes of cladding and fuel corrosion and even shed light on important mechanisms that may be at work in the corrosion of Tokamak fusion devices. Idealised samples will be synthesised, using the actinide thin film deposition system at the University of Bristol. We plan to use facilities such as the DCF and Surrey Ion Beam Centre to investigate radiation damage and we have a collaboration with the KURRI and CLADS facility in Japan, which will enable irradiation of thin film samples with high neutron fluxes. This project will bring the theorists and experimentalists together on a joint venture; retaining, building and developing knowledge-base for future generations.