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Miura, Kuniaki*; Shibata, Hiroshi; Onizawa, Tatsuya*; Nakano, Hiroko; Takeno, Naofumi*; Takeuchi, Tomoaki; Tsuchiya, Kunihiko
Nihon Hozen Gakkai Dai-13-Kai Gakujutsu Koenkai Yoshishu, p.387 - 390, 2016/07
no abstracts in English
Imaizumi, Tomomi; Miyauchi, Masaru; Ito, Masayasu; Watahiki, Shunsuke; Nagata, Hiroshi; Hanakawa, Hiroki; Naka, Michihiro; Kawamata, Kazuo; Yamaura, Takayuki; Ide, Hiroshi; et al.
JAEA-Technology 2011-031, 123 Pages, 2012/01
JAEA-Technology-2011-031.pdf:16.08MB
The number of research reactors in the world is decreasing because of their aging. However, the planning to introduce the nuclear power plants is increasing in Asian countries. In these Asian countries, the key issue is the human resource development for operation and management of nuclear power plants after constructed them, and also the necessity of research reactor, which is used for lifetime extension of LWRs, progress of the science and technology, expansion of industry use, human resources training and so on, is increasing. From above backgrounds, the Neutron Irradiation and Testing Reactor Center began to discuss basic concept of a multipurpose low-power research reactor for education and training, etc. This design study is expected to contribute not only to design tool improvement and human resources development in the Neutron Irradiation and Testing Reactor Center but also to maintain and upgrade the technology on research reactors in nuclear power-related companies. This report treats the activities of the working group from July 2010 to June 2011 on the multipurpose low-power research reactor in the Neutron Irradiation and Testing Reactor Center and nuclear power-related companies.
Kikuchi, Kenji; Tezuka, Masao*; Saito, Shigeru; Onizawa, Tatsuya*; Abe, Yuji*; Miura, Kuniaki*
no journal, ,
Solid-electrolyte oxygen-probe was developed for measurement of oxygen concentration in lead bismuth eutectic. The difference of the probe from conventional ones is that first reference electrolyte is iron oxide, secondly it is a cassette type model that can be a part of circulating pipe, and thirdly measuring temperature is below 400 
C. Proto type probe was attached in the circulating PbBi loop of JAEA and measurement rest was done during about 8000 hrs. Oxygen concentration of the loop, with non-active oxygen control but PbBi was shielded from the air by high purity argon gas, was evaluated to be 1E-5 to 1E-2 wppm.
Usami, Hiroshi; Kawamura, Hiroshi; Ooka, Makoto; Miura, Kuniaki*; Onizawa, Tatsuya*
no journal, ,
no abstracts in English
Shibata, Hiroshi; Onizawa, Tatsuya*; Takeuchi, Tomoaki; Nakano, Hiroko; Uehara, Toshiaki; Takeno, Naofumi*; Miura, Kuniaki*; Tsuchiya, Kunihiko
no journal, ,
no abstracts in English