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Shimizu, Katsusuke*; Onozuka, Masanori*; Usui, Yukinori*; Urata, Kazuhiro*; Tsujita, Yoshihiro*; Nakahira, Masataka; Takeda, Nobukazu; Kakudate, Satoshi; Omori, Junji; Shibanuma, Kiyoshi
Fusion Engineering and Design, 82(15-24), p.2081 - 2088, 2007/10
Times Cited Count:5 Percentile:37.26(Nuclear Science & Technology)To confirm the manufacturing and assembly process of the ITER vacuum vessel (VV), a series of related tests has been conducted. (1) Using a full-scale partial mock-up, fabrication methods are to be examined to determine feasibility. (2) To simulate a series of field-joint assembly operations, a test stand was built. (3) To provide an appropriate shield gas supply on the back side of the outer shell during field-joint welding, three types of back-seal structures have been tested. (4) The applicability of UT methods for volumetric inspection has been investigated. (5) Applicability of Liquid Penetrant Testing as a surface examination for the VV interior surface (i.e. ultra-vacuum side) has been investigated.
Ito, Takaya*; Sato, Hiroyuki*; Usui, Yukinori*; Toda, Mikio*
Mitsubishi Juko Giho, 43(4), p.45 - 49, 2006/12
MHI has participated in the FBR development that is a national project from an initial stage as a member of fabricators. Aiming at FBR commercialization until 2050, MHI has actively contributed to "Feasibility Studies on Commercialized Fast Reactor Cycle System" performed mainly by JAEA from 1999. This time, the Sodium-cooled Fast Reactor was chosen at a national level as the main concept. This Sodium-cooled Fast Reactor is proposed by MHI, and for an economy improvement innovation technologies (reduction of the number of the loops, shortening of piping systems, integrated IHX/Pump component and so on) are adopted in this concept. From now on, research and development for FBR commercialization will be accelerated at a national level toward realization of a demonstration reactor until about 2025. MHI also challenges the project as a proposer of this concept.
Onozuka, Masanori*; Shimizu, Katsusuke*; Usui, Yukinori*; Urata, Kazuhiro*; Namiki, Masao*; Tsujita, Yoshihiro*; Nakahira, Masataka; Takeda, Nobukazu; Kakudate, Satoshi; Omori, Junji; et al.
no journal, ,
no abstracts in English
Sato, Hiroyuki; Iigaki, Kazuhiko; Shimizu, Atsushi; Noguchi, Hiroki; Sakaba, Nariaki; Asano, Koji*; Oyama, Sunao*; Onishi, Hiroyuki*; Suyama, Kazumasa*; Usui, Yukinori*
no journal, ,
no abstracts in English