Abstract
A feasibility study of a new testing facility, i.e., the Volumetric Neutron Source (VNS) in a tokamak configuration, was initiated in 2023 and is now under way to address potential showstoppers. Key outcomes of the engineering activities are presented in [1] and the latest improvements in [2]. The main goal of the VNS is to provide a realistic environment to test the in-vessel components of fusion reactors, in particular the tritium-breeding blanket.
Lessons learned during previous years of DEMO development point to the need for thorough nuclear design integration already at the level of the basic machine design; hence, issues related to the maintenance of the in-vessel components have been addressed at a basic level.
The work presented here describes the remote maintenance strategy for VNS blanket segments, which is an adaptation of the concept proposed for DEMO in previous years [3]. The work discusses the basic approach for the development of an integrated remote blanket strategy for the VNS blanket. Consistent with the initial requirements of the machine, the remote replacement sequence of the blankets, the potential list of the required tools and transporter, and the conceptual design of some of the main tools are presented and discussed in this article.
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