CREDIBILITY OF PREDICTIONS OF REACTOR CORE CONDITION

反应堆堆芯状况预测的可信度

• 批准号: 2435507
• 金额: --
• 依托单位: University of Liverpool
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2435507
• 关键词: CREDIBILITY; PREDICTIONS; REACTOR; CORE; CONDITION

Typically, about 20% of the UK's electricity is supplied from nuclear power-stations [http://gridwatch.co.uk/] which are operated by EDF. These power-stations are approaching the end of their planned life so that a number of them are usually shutdown for inspection and maintenance [https://www.edfenergy.com/energy/power-station/daily-statuses]. A key factor in their future operation is the condition of the graphite in the reactor which moderates the neutrons and also forms the structure of the core. During inspection periods, the inner surface of the graphite core is examined and measured to support models of the degradation of the graphite during the operation of the reactor [https://www.youtube.com/watch?v=hlaUky_v55I]. The inaccessibility of most of the core means that measurement data is limited to a few locations whereas predictions about the condition of the entire core are required to support decisions about the safe operation of the reactor. A credibility matrix and associated credibility factors have been developed for use in evaluating untestable models in aerospace engineering and computational biology; and, it is proposed to extend and modify these tools to establish trust amongst decision-makers in predictions of the condition of the graphite core in nuclear reactors. The project will consider strategies to maximise the use and collection of measurements from graphite cores, as well as to improve protocols for communicating information about the quality of a model including its uncertainty. The project will be conducted in a research group involved in similar work in aerospace engineering and biotechnology; and industrial supervision will be provided by EDF.

通常，英国约20%的电力由EDF运营的核电站[http：//gridwatch.co.uk/]提供。这些发电站的计划寿命即将结束，因此其中一些发电站通常会关闭进行检查和维护[https：//www.edfenergy.com/energy/power-station/daily-statuses]。它们未来运行的一个关键因素是反应堆中石墨的状况，石墨对中子起减速作用，也形成了堆芯的结构。在检查期间，对石墨芯的内表面进行检查和测量，以支持反应堆运行期间石墨降解的模型[https://www.youtube.com/watch? v=hlaUKy_v55I]。大部分堆芯的不可接近性意味着测量数据仅限于少数几个位置，而需要对整个堆芯的状况进行预测，以支持有关反应堆安全运行的决策。一个可信度矩阵和相关的可信度因素已被开发用于在航空航天工程和计算生物学的不可测试的模型进行评估，并建议扩展和修改这些工具，以建立在核反应堆中的石墨芯的条件预测决策者之间的信任。该项目将考虑最大限度地利用和收集石墨芯测量结果的战略，以及改进关于模型质量（包括其不确定性）的信息交流协议。该项目将在一个从事航空航天工程和生物技术方面类似工作的研究小组中进行;法国电力公司将提供工业监督。