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Chikazawa, Yoshitaka; Hori, Toru; Kida, Masanori; Konomura, Mamoru
JNC TY9400 2004-029, 280 Pages, 2004/11
JNC-TY9400-2004-029.pdf:13.44MB
In phase II of the feasibility study of commercialized fast reactor cycle systems of JNC, we make a concept of a small sodium cooled reactor for a power source of a city with various requirements, such as, safety and economical competitiveness. Various reactor concepts are surveyed and a tank type reactor whose intermediate heat exchanger and primary main pumps are arranged in series is selected. In this study, a compact long life core and a simple reactor structure designs are pursued. The core type is three regional Zr concentration with one Pu enrichment core, the reactor outlet temperature achieves 550 deg-C and the reactor electric output increases from 150 MWe to 165 MWe. The construction cost is much higher than the economical goal in the case of FOAK. But the construction cost in the case of NOAK is estimated to be 85.6% achieving the economical goal.
Morishita, Masaki; Kitamura, Seiji; Takahashi, Kenji; Inoue, Kazuhiko; Kida, Masanori; Moro, Satoshi*; Kato, Asao*; Fushimi, Minoru*
JNC TY9400 2004-028, 921 Pages, 2004/11
Japan Nuclear Cycle Development Institute (JNC) and Japan Atomic Power Company (JAPC) launched joint research programs on structural design and three-dimensional seismic isolation technologies, as part of the supporting R&D activities for the feasibility studies on commercialized fast breeder reactor cycle systems. A research project by JAPC under the auspices of the Ministry of Economy, Trade, and Industry (METI) with technical support by JNC is included in this joint study. This report contains the results of the research on the structural design technology. The research scope was identified as (1) Study on Developing Program, (2) Study on 3-dimentional Entire Building Base Isolation System, and (3) Study on Vertical Isolation System for Main Equipment, and the results of this year's studies are summarized as follows. (1) Study on Developing Program -Performance Requirements for 3-dimensional Isolation Devices "The behavior of a three-dimensional isolated reactor building" and "amenity under the strong wind load" were studied in order to set up performance requirements for the three-dimensional isolation system. Consequently, it was proved for the former subject that the structure of horizontal base-dimensional isolated building was applicable to 3-D isolated building and for the latter that amenity of the operator in the 3-D isolated reactor building is not affected under the strong wind. -Development Targets and Schedules for Three-dimensional Isolation Deviece In order to select the development candidate of the three dimensional isolation devices, "evaluation items and criteria" and "technical guideline on seismic three-dimensional isolation system" were studied. For the former subject, detailed requirements to the component in the reactor building were studied based on the 2002 fiscal year result and embodied.(2) Study on 3-dimentional Entire Building Base Isolation System -The 3 system concepts nominated on 2001, "Hydraulic system", "Fiber reinforced air sp
Konomura, Mamoru; Ogawa, Takashi; Okano, Yasushi; Yamaguchi, Hiroyuki; Murakami, Tsutomu; Takaki, Naoyuki; Nishiguchi, Youhei; Sugino, Kazuteru; Naganuma, Masayuki; Hishida, Masahiko; et al.
JNC TN9400 2004-035, 2071 Pages, 2004/06
JNC-TN9400-2004-035.pdf:76.42MB
The attractive concepts for Sodium-, lead-bismuth-, helium- and water-cooled FBRs have been created through using typical plant features and employing advanced technologies. Efforts on evaluating technological prospects of feasibility have been paid for these concepts. Also, it was comfirmed if these concepts satisfy design requierments of capability and performance presumed in the feasibilty study on commertialization of Fast Breeder Reactor Systems. As results, it was concluded that the selection of sodium-cooled reactor was most rational for practical use of FBR technologies in 2015.
Hori, Toru; Chikazawa, Yoshitaka; Kida, Masanori; Konomura, Mamoru
JNC TY9400 2003-013, 314 Pages, 2003/08
JNC-TY9400-2003-013.pdf:21.54MB
In the "Feasibility Studies on Commercialized Fast Reactor System", sodium-cooled small-scale reactor concepts have been studied fromstandpoints of economy, safety, and long lived core. And in JFY2002,based on study of technical issues, three concepts (electricity output of 150MWe) were designed with parameter of reactivity control and coolant circulation type. The above concepts had prospect to attain safety enhancement (avoiding core melt without SASS at ATWS) and long lived core (10 years). They could not satisfy cost target (350,000 yen/kWe), because the inherent and passive safe core was flat (phi3.3m x h0.6m),and upper reactor diameter increased by considering some space to take out EMP periodically. But forced circulation-type concepts had potential to decrease construction cost by adopting compact core with mitigation of coolant temperature reactivity coefficient and devising in-vessel EMP arrangement.Control rod system had merits about decreasing reactor diameter, utilizing relative displacement reactivity coefficient between reactor and control rod, and small technical issues, by comparing with reflector system. And EMP had no necessity to be taken out from reactor, except failure accidents, by considering EMP characteristic of Passive equipment and maintenance process. Based on these results, it was important that some attractive small-scale reactor concepts, which attained compact and high temperature reactor with control rod and forced circulation-type, would be proposed by aiming at "longer lived core (more than 10 years)", "simpler operation and maintenance" , and "diversified social needs (hydrogen production)".
Morishita, Masaki; Kitamura, Seiji; Inoue, Kazuhiko; Kida, Masanori; Moro, Satoshi; Kato, Asao; Fushimi, Minoru*
JNC TY9400 2003-009, 682 Pages, 2003/05
JNC-TY9400-2003-009.pdf:35.1MB
Japan Nuclear Cycle Development Institute(JNC) and Japan Atomic Power Company (JAPC) launched joint research programs on structural design and three-dimensional seismic isolation technologies,as part of the supporting R&D activities for the feasibility studies on commercialized fast breeder reactor cycle systems. A research project by JAPC under the auspices of the Ministry of Economy,Trade,and Industry (METI) with technical support by JNC is included in this joint study. This report contains the results of the research on the structural design technology. The research scope was identified as (1) Study on Developing Program,(2) Study on 3-dimentional Entire Building Base Isolation System,and (3) Study on Vertical Isolation System for Main Equipment, and the results of this year's studies are summarized as follows.
Kida, Masanori; Shimakawa, Yoshio; Kawasaki, Nobuchika; Hori, Toru; ; Kamiyama, Kenji
Saikuru Kiko Giho, (12), p.19 - 43, 2001/09
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; ; Kida, Masanori; ; ; ; Hayashi, Hideyuki
JNC TN9400 2001-073, 414 Pages, 2001/06
JNC-TN9400-2001-073.pdf:10.15MB
The phase I feasibility studies on commercialized fast reactor cycle system was conducted until FY2000. In the phase I study, the preliminary designs of the three gas cooled FBR concepts expected to have competitive cost performance with LWR were investigated. The three concepts are (1)Carbon dioxide cooled FBR using pin type fuel, (2)Helium cooled FBR using pin type fuel, (3)Helium cooled FBR using coated particle fuel. This report summarizes the results of the preliminary design study on helium cooled FBR using coated particle fuel conducted until March 2001. The helium cooled FBR plant accomplishes direct gas turbine cycle of high efficiency using heat resisted coated particle fuel and reactor inner structures. The plant also performs core melt proof concept by high temperature performance, negative Doppler coefficient and natural circulation cooling. The plant pursues safety and cost effective concept by the removal of CDA countermeasures, high plant efficiency and realistic twin plant design with modularization. The results have shown that the plant has the possibility of core melt proof safety although the core performance is not sufficient. The plant construction cost is thought to be a little higher than the expected cost and has the possibility to reach the target. The future R&D especially for coated particle fuel and fuel assembly is necessary.
; ; Kida, Masanori;
Transactions of 16th International Conference on Structural Mechanics in Reactor Technology (SMiRT-16), 534 Pages, 2001/00
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