Maintenance of the fusion Demo reactor will be done to maintain structural Integrity and continuous operation over lifetime of reactor. In order to maintain the required performance of vacuum vessel, breeding blankets and cooling pipe, it is necessary to ensure maintenance technology for supporting the structural Integrity such as in-service inspection, repair, replacement, and maintenance activities based on evaluations for each of components. Current Status and future plan related to development of mechan...
英字タイトル:
Current Status related to development of Mechanical Engineers Code for Fusion Facilities

In-vessel components (IVCs) such as blanket segments and divertor cassettes strongly receive neutron irradiation through high energy neutron (14.06 MeV) from fusion plasma. Therefore, a fusion DEMO plant requires a periodic replacement of IVCs. The dose rate of IVCs for DEMO is one order of magnitude higher than that for ITER. The JA DEMO also requires a five-year cooling time to reduce its dose rate to the level of ITER's dose rate. The maintenance scheme for DEMO requires the components to be replaced by ...
英字タイトル:
Opinion of the maintenance and preservation for a fusion DEMO reactor

この地上で太陽のエネルギー源である核融合反応を安定して起こし、エネルギーとして使う『核融合炉』を実現するため、これまで核融合炉の炉心を始め、各構成機器や炉システムの開発が進められ、 ITERでは発電までは行わないものの、核融合エネルギーを発生させるところまで来ている。 本稿では、後稿の導入として、基本的な核融合炉のしくみと核融合炉特有の構成機器とその機能について概説する。...