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Takahashi, Hiroki; Kano, Tadashi*; Takahashi, Teruo*; Kyoya, Masahiko; Shimazaki, Junya*
JAERI-Tech 2001-068, 78 Pages, 2001/10
JAERI-Tech-2001-068.pdf:82.36MB
JAERI had carried out design study about a lightweight and compact integral type reactor (an advanced marine reactor) with passive safety equipment, and completed an engineering design. To confirm the design performance and operation performance and to utilize the study of automation of the reactor operation, we have developed a simulator for the integral type reactor. This can be used also for research and development of a small reactor.However, in using for research and development, the improvement in a performance of hardware and a human machine interface of software of the simulator were needed. Renewal of hardware and improvement of software have been conducted. Thereby, the operability of an integral-reactor simulator has been improved. Moreover, versatility, maintainability, extendibility, and the improvement of system performed by using the conventional hardware and software.This is a report on hardware renewal and the interface improvement of the integral type reactor simulator mainly focused on contents of the enhancement in a human machine interface.
Ura, Tamaki*; Takamasa, Tomoji*; Nishimura, Hajime*; Aoki, Taro*; Ueno, Michio*; Maeda, Toshio*; Nakamura, Masato*; Shimazu, Shunsuke*; Tokunaga, Sango*; Shibata, Yozo*; et al.
JAERI-Tech 2001-049, 154 Pages, 2001/07
JAERI-Tech-2001-049.pdf:11.24MB
JAERI has studied on design and operation of a nuclear powered submersible research vessel, which will navigate under sea in the Arctic Ocean, as a part of the design study of advanced marine reactors. This report describes operation conditions and an operating system of the vessel those were discussed by the specialists of hull design, sound positioning, ship motions and oceanography, etc. The design conditions on ship motions for submersible vessels were surveyed considering regulations in our country, and ship motions were evaluated assuming the observation activities in the Arctic Ocean. A submarine transponder system and an on ice communication buoy system were examined as a positioning and communication system supposing the activity under ice. Procedures to secure safety of nuclear powered submersible research vessel were discussed based on the investigation of accidents. These results were reflected to the concept of the nuclear powered submersible research vessel, and subjects fto be settled in the next step were clarified.
Kusunoki, Tsuyoshi; Takahashi, Teruo*; Nishimura, Hajime*; Tokunaga, Sango*; Odano, Naoteru; Yoritsune, Tsutomu; Ishida, Toshihisa
JAERI-Tech 2001-045, 68 Pages, 2001/07
JAERI-Tech-2001-045.pdf:5.33MB
A concept of a submersible research vessel navigating in 600 m depth and a compact nuclear reactor were carried out for the expansion of the nuclear power utilization. The mission of the vessel is the research of mechanism of the climate change. Through conditions of the Arctic Ocean and the sea at high latitude have significant impacts on the global environmental change, it is difficult to investigate those areas by ordinary ships because of thick ice or storm. By taking account of the research mission, the basic specifications of the vessel are decided; the total weight is 500 t, the submersible depth is 600 m, the maximum speed is 12 knots (22.2km/h), and the number of crews is 16. Nuclear power has an advantage in supplying large power of electricity in the sea for long period. Based on the requirements, it has been decided that two sets of compact nuclear reactor, SCR, which is light-weighted and of enhanced safety characteristics to supply the total electricity of 500 kW.
Kusunoki, Tsuyoshi; Fujimoto, Hiromi*; Nagata, Yutaka*; Takahashi, Teruo*; Ishida, Toshihisa
Kaiyo Chosa Gijutsu, 12(2), p.1 - 10, 2000/09
no abstracts in English
Takahashi, Teruo; Shimazaki, Junya; Nakazawa, Toshio; Yabuuchi, Noriaki; Fukuhara, Yoshifumi*; Kusunoki, Tsuyoshi; Ochiai, Masaaki
JAERI-Tech 2000-039, p.94 - 0, 2000/03
no abstracts in English
Odano, Naoteru; Kusunoki, Tsuyoshi; Yoritsune, Tsutomu; Fukuhara, Yoshifumi*; Saito, Kazuo*; Takahashi, Teruo*; Ishida, Toshihisa
Proceedings of International Workshop on Utilization of Nuclear Power in Oceans (N'ocean 2000), p.164 - 169, 2000/02
no abstracts in English
Kyoya, Masahiko; ; Kusunoki, Tsuyoshi; ; Takahashi, Teruo*
JAERI-M 94-079, 116 Pages, 1994/06
no abstracts in English
; Kyoya, Masahiko; Takahashi, Teruo*; Kusunoki, Tsuyoshi
11 Annual Simulators Conf., Simulation Series,Vol. 26,No. 3, 0, p.454 - 459, 1994/00
no abstracts in English
Kusunoki, Tsuyoshi; Kyoya, Masahiko; Takahashi, Teruo*; ; ;
JAERI-M 93-223, 176 Pages, 1993/11
no abstracts in English
Shidara, Hiroyuki; Takahashi, Koji; Komatsuzaki, Manabu*; Isozaki, Masami; Kobayashi, Noriyuki*; Abe, Teruo*; Abe, Ganji; Oda, Yasuhisa; Ikeda, Ryosuke; Kobayashi, Takayuki; et al.
no journal, ,
In order to validate the millimeter wave design procedure, the EL mock-up has been constructed and the low power test has been carried out by using mW-level low power RF oscillators. The test has been carried out with critical four edged beams instead of all eight beams in the upper waveguide unit. The measured data has been compared with design at several important locations in the launcher and after the launcher exit with steering mirror angle changed. The comparison of the measured beams propagation and the design shows good agreement for the beam sizes and the beam orientation performance. The quantitative evaluations has been carried out and the design procedure's reasonability has been confirmed.
Takahashi, Koji; Abe, Ganji; Isozaki, Masami; Ikeda, Ryosuke; Oda, Yasuhisa; Kajiwara, Ken; Sakamoto, Keishi; Kobayashi, Noriyuki*; Iida, Hiromasa*; Komatsuzaki, Manabu*; et al.
no journal, ,
It was analytically obtained that electron cyclotron current drive efficency at 
=0.4
0.6 can be doubled modifying the steering function of millimeter wave launching from the equatorial port from toroidally to poloidally. The design modification of the ITER equatorial launcher enhancing ECCD function is implemented. The millimeter wave design satisfying transmission efficiency more than 99% with the required ploidal beam steering capability is successfully obtained and reflected to the launcher structural design. The millimeter wave design optimization, BSM design modification to allow the required polidal beam steering capability and so on are reported in detail at the conference.
Takahashi, Koji; Abe, Ganji; Isozaki, Masami; Komatsuzaki, Manabu*; Abe, Teruo*; Iida, Hiromasa*; Kobayashi, Noriyuki*; Kajiwara, Ken; Sakamoto, Keishi
no journal, ,
Design change from toroidal to poloidal beam steering of equatorial launcher has been proposed by ITER Organization. This design change has large design impact on blanket shield modules (BSM), millimeter wave path and components. In addition, heat resistance, structural integrity, nuclear shielding capability and etc. for the modified design are needed to be re-evaluated. At first, BSM design modification was implemented since it had the extraordinary impact. Then, the structural integrity against electromagnetic force and nuclear shielding capability was evaluated. The analysis shows that moment of almost all modules and the entire launcher structure become less than the design limit. Regarding to nuclear shielding capability, it was obtained that residual dose rate at the launcher backend was reduced by 20%. However, the residual dose from the surroundings was also revealed.