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Mizuno, Manabu*; Okusa, Kyoichi; Tamayama, Kiyoshi
Proceedings of International Symposium on Symbiotic Nuclear Power Systems for 21st Century (ISSNP) (CD-ROM), p.148 - 153, 2007/07
In the nuclear plants, it is required to detect an anomaly as early as possible and to inhibit adverse consequences. This requirement is especially important for the prototype Fast Breeder Reactor "Monju". Therefore, the monitoring and diagnosis system is required to be developed for "Monju" plant equipments. In these days, such a monitoring and diagnosis system can be realized using web technology with rationalized system resources due to remarkable progress of computer network technology. Then, we developed a platform based on web technology for the monitoring and diagnosis system of "Monju". Distributed architecture, standardization and highly flexible system structure have been taken account of in development. This newly developed platform and the prototype monitoring and diagnosis system have been validated. The system on the platform acquires "Monju" plant data and displays the data on client computers using "Monju" intranet with acceptable delay times.
Yoshikawa, Shinji; Tamayama, Kiyoshi; Suzuki, Ryosuke*; Kondo, Koki*; Nakai, Satoshi*; NAKAI, Satoshi*
The 23rd International Conference on Termoelectric, 0 Pages, 2004/12
A prototype system for thermoelectric power generation using the Heusler Fe2 VAI alloy has been studied as a potential heat recovery system from a liquid metal cooled fast breeder reactor. The modules consisting of 180 pairs using Fe2VAi cast alloy were mouted on 1.8 m long of the outer surface of a stainless tube (O.D. 34mm) which is internally heated by flowing liquid sodium (484-670K, 2-8 1/min). The element has a shape of a long cuboid, where one small rectangular end was thermally contacted with the tube surface and the other end was directly cooled by forced air flow to form a counter-type heat exchanger. The internal electric resistances of the modules were nearly same, however, the electromotive force varied widely because of the difference of thermal resistance between the module and tube surface. The output power generated from this prototype system was evaluated to be about 4.2 W/m assuming that all the circumference of the pipe surface is covered by the elements.
Suzuki, Ryosuke*; Tanabe, Kentaro*; Kondo, Koki*; Ono, Katsutoshi*; Toda, Shinichi; Kasagawa, Yusuke; Tamayama, Kiyoshi; Oketani, Kazuhiro*
JNC TY4400 2003-004, 214 Pages, 2003/08
Recently, it has been important to reuse discharged heat energy from present nuclear plants in the view of reduction of environmental burden and improvement of heat efficiency for plant. For practical use in future of sodium cooled FBRs, which are typical high temperature system, this issue must be given priority. The thermal electric conversion system has been applied to the limited uses such as space or military, however, that results show good merits for reliability, maintenance free, and so on. Recently, this technology has been reconsidered in the view of saving energy in general industry. In this study, we made an investigation for applicability of the thermal electric conversion system to sodium cooled FBR as a heat recovery techbnology. Exactly, We have carried out the fundamental research and development for thermoelectric materials and elements, development of modules, and sodium tests with those modules, and then, we acquired the fundamental knowledge to estimate the efficiencies of thermal electric conversion system or modules for a sodium cooled FBR.
Murai, Yuichi*; Yamamoto, Fujio*; Ishikawa, Masaaki*; Sakai, Kosuke*; Oiwa, Hiroshi*; Toda, Shinichi; Yoshikawa, Shinji; Tamayama, Kiyoshi
JNC TY4400 2003-006, 75 Pages, 2003/06
None
Okusa, Ryoichi; Tamayama, Kiyoshi;
GENES4/ANP2003, 0 Pages, 2003/00
None
Ishikawa, Kazuhiko*; Asada, Katsuhiko*; Tamayama, Kiyoshi; Ueda, Masahiro*
Reza Kenkyu, 30(2), p.91 - 93, 2002/00
None
Tamayama, Kiyoshi; ; ; Okusa, Ryoichi; ; ; Mitsumoto, Rika*
JNC TN4410 2001-007, 8 Pages, 2001/12
A distributed plant monitoring and diagnosis system is being developed at "Monju". Plant data are obtained from the "Monju" data acquisition system. Diagnosis software adopts the agent system. The standardizing of the interface and the use of agents enables flexible improvements to be made to the system. Moreover, the adoption of Internet technology enables "Monju" engineers to access this system from their PC. This report describes the system outline and some of the validation work that was conducted.
Kimura, Koichi; Mitsumoto, Rika*; Muranaka, Makoto; Tamayama, Kiyoshi; Watanabe, Hisao*
no journal, ,
Monju plant dynamics code Fanpsy to analyze transient of a main feed-water pumpmodel was build, based on an actual component valve characteristic, and Fanpsywas verified by analysis of 40% power start-up tests.
Mitsumoto, Rika*; Kimura, Koichi; Tamayama, Kiyoshi; Watanabe, Hisao*
no journal, ,
no abstracts in English
Mitsumoto, Rika; Kimura, Koichi; Tamayama, Kiyoshi; Maruyama, Fumi*
no journal, ,
no abstracts in English
Mitsumoto, Rika*; Kimura, Koichi; Tamayama, Kiyoshi; Watanabe, Hisao*
no journal, ,
Monju plant dynamics code Fanpsy to analyze transient of a water steam circuit start-up bypass analysis model was build, based on an actual component valve characteristic, and Fanpsy was verified by analysis of water steam circuit start-up tests.
Mitsumoto, Rika*; Okusa, Kyoichi; Tamayama, Kiyoshi; Shin, Seiichi*
no journal, ,
Mizuno, Manabu*; Okusa, Kyoichi; Tamayama, Kiyoshi
no journal, ,
no abstracts in English
Mitsumoto, Rika*; Okusa, Kyoichi; Tamayama, Kiyoshi; Shin, Seiichi
no journal, ,
no abstracts in English
Okusa, Kyoichi; Tamayama, Kiyoshi; Yoshikawa, Hidekazu
no journal, ,
no abstracts in English
Yamada, Fumiaki; Kimura, Koichi; Jo, Takahisa; Mori, Takero; Morizono, Koji; Tamayama, Kiyoshi; Miyakawa, Akira
no journal, ,
In this report that development plan of Monju plant dynamics analysis code.
Kimura, Koichi; Tamayama, Kiyoshi; Miyakawa, Akira
no journal, ,
no abstracts in English
Honda, Kei; Kimura, Koichi; Tamayama, Kiyoshi; Mitsumoto, Rika*; Araki, Kosuke*
no journal, ,
no abstracts in English
Mitsumoto, Rika; Kimura, Koichi; Tamayama, Kiyoshi; Suzuki, Satoshi*
no journal, ,
no abstracts in English