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International Collaboration to Advance the Technical Readiness of High Uranium Density Fuels and Composites for Small Modular Reactors

国际合作推进小型模块化反应堆高铀密度燃料和复合材料的技术准备

基本信息

批准号：
EP/X011526/1
负责人：
Joel Turner
金额：
$ 64.87万
依托单位：
University of Manchester
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2023
资助国家：
英国
起止时间：
2023 至无数据
项目状态：
未结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FX011526%2F1
关键词：
International Collaboration Advance Technical Readiness

项目摘要

This project seeks to understand the importance of a range of factors on how specific High Density (nuclear) Fuels (HDFs) behave under accident conditions. At present both UN and UB2 are promising future fuel materials to replace UO2, enabling more robust cladding solutions to be implemented by improving fuel cycle economics. Their deployment is challenging due to an observed rapid reaction with high temperature steam, an environment likely to be encountered during any postulated cladding failure in a light water reactor (such as a GW-scale commercial plant, or Small Modular Reactor). At present this reaction is poorly understood, and limited by confounding results from international institutions. The proposed work seeks to address this by adopting a round-robin approach, with a range of international collaborators exchanging both samples and data, in a bit to develop a mechanistic understanding of UN hydrolysis behaviour. Furthermore, composite UN-UB2 fuel will be manufactured which has been seen to drive improvements with UN onset temperature, but also remains understood. By developing a deeper mechanistic understanding of UN behaviour and the importance of typical light element contaminants, we will seek to explore the effect of UB2 on UN fuels, and hence develop more resistant future fuel forms.

本项目旨在了解特定高密度(核)燃料(HDF)在事故条件下表现的一系列因素的重要性。目前，联合国和UB2都很有希望使用未来的燃料材料来取代UO2，通过提高燃料循环的经济性，实现更强大的覆层解决方案。它们的部署具有挑战性，因为观察到与高温蒸汽的快速反应，这种环境很可能在轻水反应堆(如GW规模的商业工厂或小型模块化反应堆)发生任何假定的包层故障时遇到。目前，人们对这种反应知之甚少，而且受到国际机构混乱结果的限制。拟议的工作试图通过采用循环法解决这一问题，由一系列国际合作者交换样本和数据，以在一定程度上发展对联合国水解行为的机械性理解。此外，合成的UN-UB2燃料将被制造出来，这被认为是推动了联合国开始温度的改善，但也仍然是被理解的。通过更深入地了解联合国的行为和典型轻元素污染物的重要性，我们将努力探索UB2对联合国燃料的影响，从而开发更具抵抗力的未来燃料形式。