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Service Joining Strategy for the EU DEMO
Fusion Engineering and Design ( IF 1.9 ) Pub Date : 2020-09-01 , DOI: 10.1016/j.fusengdes.2020.111724
Tristan Tremethick , Simon Kirk , Keelan Keogh , Alexander O’Hare , Emily Harford , Ben Quirk

As part of the European Research Roadmap to the Realisation of Fusion Energy, the DEMO reactor aims to show the feasibility of a fusion power plant. Due to the loss of revenue created by downtime and the potential for a breakdown to render a reactor inoperable, maintenance is “mission critical” for a power plant. The harsh environment of a fusion reactor dictates that maintenance must be carried out remotely, which requires the development of new strategies and technologies. There are many challenges to be solved, one of which is how to manage service connections. Within DEMO, the plasma-facing, first-wall components will be the most challenging to connect services to, due to the number of connections and operational environment. High speed, highly reliable cutting and welding tools are required to minimise downtime and mitigate the danger of rendering the reactor inoperable. Uniquely, these tools are required to operate wholly in-bore to allow the current pipe density in the DEMO architecture, something that is not available from industry. Here, the development of a Service Joining System to meet the DEMO scenario is presented. The joining strategy is discussed along with the substantiation of the design solution. The results of proof-of-principle trials to date are discussed and their implications for the strategy considered. Having discussed feasibility for DEMO, a roadmap is presented for the development of the Service Joining System to an appropriate Technology Readiness Level.

中文翻译:

欧盟 DEMO 的服务加入策略

作为欧洲实现聚变能源研究路线图的一部分,DEMO 反应堆旨在展示聚变发电厂的可行性。由于停机造成的收入损失以及故障导致反应堆无法运行的可能性,因此维护对于发电厂来说是“关键任务”。聚变反应堆的恶劣环境要求必须远程进行维护,这需要开发新的战略和技术。有许多挑战需要解决,其中之一是如何管理服务连接。在 DEMO 中,由于连接数量和操作环境的原因,面向等离子体的第一壁组件将是连接服务的最大挑战。高速,需要高度可靠的切割和焊接工具来最大限度地减少停机时间并减轻使反应堆无法运行的危险。独特的是,这些工具需要完全在钻孔内操作,以允许 DEMO 架构中的当前管道密度,这是工业无法提供的。这里介绍了满足DEMO场景的业务加入系统的开发。连接策略与设计解决方案的证实一起讨论。讨论了迄今为止原理验证试验的结果及其对所考虑策略的影响。在讨论了 DEMO 的可行性之后,提出了将服务加入系统开发到适当的技术准备水平的路线图。这些工具需要完全在钻孔内操作,以允许 DEMO 架构中的当前管道密度,这是工业无法提供的。这里介绍了满足DEMO场景的业务加入系统的开发。连接策略与设计解决方案的证实一起讨论。讨论了迄今为止原理验证试验的结果及其对所考虑策略的影响。在讨论了 DEMO 的可行性之后,提出了将服务加入系统开发到适当的技术准备水平的路线图。这些工具需要完全在钻孔内操作,以允许 DEMO 架构中的当前管道密度,这是工业无法提供的。这里介绍了满足DEMO场景的业务加入系统的开发。连接策略与设计解决方案的证实一起讨论。讨论了迄今为止原理验证试验的结果及其对所考虑策略的影响。在讨论了 DEMO 的可行性之后,提出了将服务加入系统开发到适当的技术准备水平的路线图。连接策略与设计解决方案的证实一起讨论。讨论了迄今为止原理验证试验的结果及其对所考虑策略的影响。在讨论了 DEMO 的可行性之后,提出了将服务加入系统开发到适当的技术准备水平的路线图。连接策略与设计解决方案的证实一起讨论。讨论了迄今为止原理验证试验的结果及其对所考虑策略的影响。在讨论了 DEMO 的可行性之后,提出了将服务加入系统开发到适当的技术准备水平的路线图。
更新日期:2020-09-01
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