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Sasaki, Hirokazu*; Nishikubo, Hideo*; Nishida, Shinsuke*; Yamazaki, Satoshi*; Nakasaki, Ryusuke*; Isomatsu, Takemi*; Minato, Ryuichiro*; Kinugawa, Kohei*; Imamura, Akihiro*; Otomo, Shinya*; et al.
Furukawa Denko Jiho, (138), p.2 - 10, 2019/02
no abstracts in English
Yamamoto, Tomohiko; Kato, Atsushi; Chikazawa, Yoshitaka; Negishi, Kazuo
Journal of Disaster Research, 7(5), p.645 - 655, 2012/10
Japan Sodium-cooled Fast Reactor (JSFR) adopts a new concept of a containment vessel called steel plate reinforced concrete containment vessel (SCCV). The SCCV is considered to be effective to shorten construction period thanks for elimination of rebar work at a site compared with applying a reinforced concrete CV. An SFR CV is lower pressure environment than the LWR CV, although environmental temperature of the SFR is much higher than that of LWR in the accident of coolant leakage. Therefore it is important to investigate its characteristics under high temperature to adopt the SC structure to the JSFR CV because the CV shall keep their containment function in the accidents to be assumed in design. This paper describes the construction of design evaluation method from design, experimental and analytical point of view.
Kato, Atsushi; Negishi, Kazuo; Yamamoto, Tomohiko; Akiyama, Yo*; Hara, Hiroyuki*; Iwasaki, Mikinori*
Transactions of the 21st International Conference on Structural Mechanics in Reactor Technology (SMiRT-21) (CD-ROM), 8 Pages, 2011/11
Japan Sodium-cooled Fast Reactor (JSFR) adopts a new concept of a containment vessel called steel plate reinforced concrete containment vessel (SCCV). The SCCV is considered to be effective to shorten construction period thanks for elimination of rebar work at a site compared with applying the reinforced concrete CV. Other than this advantage, the SCCV achieves high quality in building structure, since steel structure parts can be fabricated at a factory prior to the site construction. Although the SC structure has been used for the buildings of LWR etc, it is important to investigate its characteristics under high temperature to adopt the SC structure to the JSFR CV. This paper mainly describes the design study and experiments to investigate potential characteristics of the SC structure under hypothetical sodium combustion in the CV.
Hojo, Tomohiro; Aihara, Jun; Hojo, Kiichi; Furuno, Shigemi*; Yamamoto, Hiroyuki; Nitani, Noriko; Yamashita, Toshiyuki; Minato, Kazuo; Sakuma, Takaaki*
Journal of Nuclear Materials, 319, p.81 - 86, 2003/06
Times Cited Count：18 Percentile：74.33(Materials Science, Multidisciplinary)no abstracts in English
Tu, Z.; Kobayashi, Yasuhiko; Kiguchi, Kenji*; Watanabe, Hiroshi; Yamamoto, Kazuo*
Journal of Radiation Research, 43(3), p.269 - 275, 2002/11
Times Cited Count：11 Percentile：32.13(Biology)no abstracts in English
Sato, Katsuya; Narumi, Issei; Kikuchi, Masahiro; Kitayama, Shigeru; Yanagisawa, Tadashi*; Yamamoto, Kazuo; Watanabe, Hiroshi
Journal of Biochemistry, 131(1), p.121 - 129, 2002/01
Times Cited Count：25 Percentile：38.54(Biochemistry & Molecular Biology)RecA protein is considered to be the most important participant in the radiation resistance of . We identified a new 
mutation (
) in the DNA-repair deficient mutant strain KI696, the phenotype of which is remarkably different from mutant strain rec30 carrying 
. In vitro, neither RecA424 nor RecA670 could promote DNA strand exchange, indicating that both RecA424 and Rec670 are defective in recombination activity. RecA424 promoted the autocleavage reaction of LexA in vitro, whereas RecA670 did not. The LexA level in KI696 was decreased following 
-irradiation. However, the LexA level in strain rec30 was constant irrespective of irradiation. These results indicate that RecA424 retains co-protease activity, whereas RecA670 does not. While strain rec30 is extremely radiation sensitive, strain KI696 is only slightly sensitive. Together, these observations suggest that the co-protease activity rather than the recombination activity of RecA contributes to the radiation resistance in 
.
is not involved in RecA induction following irradiationNarumi, Issei; Sato, Katsuya; Kikuchi, Masahiro; Funayama, Tomoo; Yanagisawa, Tadashi*; Kobayashi, Yasuhiko; Watanabe, Hiroshi; Yamamoto, Kazuo
Journal of Bacteriology, 183(23), p.6951 - 6956, 2001/12
Times Cited Count：91 Percentile：83.71(Microbiology)The involvement of LexA in induction of RecA was investigated in . As in the wild-type strain, an increase in RecA protein synthesis following irradiation was detected in a 
disruptant, indicating that LexA is not involved in the induction of RecA in .
mutantKiyosawa, Kazuhiro*; Tanaka, Masashi*; Matsunaga, Tsukasa*; Nikaido, Osamu*; Yamamoto, Kazuo
Mutation Research; DNA Repair, 487(3-4), p.149 - 156, 2001/12
no abstracts in English
Kobayashi, Yasuhiko; Taguchi, Mitsumasa; Wada, Seiichi*; Funayama, Tomoo; Khoa, T. V.; Kamiya, Tomihiro; Watanabe, Hiroshi; Yamamoto, Kazuo
JAERI-Review 2000-024, TIARA Annual Report 1999, p.48 - 50, 2000/10
no abstracts in English
Wada, Seiichi*; Natsuhori, Masahiro*; Kobayashi, Yasuhiko; Yamamoto, Kazuo; Ito, Nobuhiko*
JAERI-Review 2000-024, TIARA Annual Report 1999, p.80 - 82, 2000/10
no abstracts in English
Kobayashi, Yasuhiko; Taguchi, Mitsumasa; Watanabe, Hiroshi; Yamamoto, Kazuo*; Yamasaki, Shuhei*; Tu, Z. L.*; Kinjo, Y.*; Kiguchi, Kenji*
Proceedings of 11th International Congress of Radiation Research (ICRR-11), 2, p.182 - 186, 2000/00
no abstracts in English
Kobayashi, Yasuhiko; Taguchi, Mitsumasa; Watanabe, Hiroshi; Yamamoto, Kazuo
JAERI-Review 99-025, TIARA Annual Report 1998, p.50 - 52, 1999/10
no abstracts in English
Kikuchi, Masahiro; Narumi, Issei; Kitayama, Shigeru*; Watanabe, Hiroshi; Yamamoto, Kazuo*
FEMS Microbiol. Lett., 174, p.151 - 157, 1999/00
Times Cited Count：16 Percentile：32.92(Microbiology)no abstracts in English
Funayama, Tomoo; Narumi, Issei; Kikuchi, Masahiro; Kitayama, Shigeru*; Watanabe, Hiroshi; Yamamoto, Kazuo
Mutation Research; DNA Repair, 435, p.151 - 161, 1999/00
no abstracts in English
Narumi, Issei; Sato, Katsuya; Kikuchi, Masahiro; Funayama, Tomoo; Kitayama, Shigeru; Yanagisawa, Tadashi*; Watanabe, Hiroshi; Yamamoto, Kazuo
Mutation Research; DNA Repair, 435(3), p.233 - 243, 1999/00
no abstracts in English
Sakamoto, Ayako; ; Tano, Shigemitsu*; *; Yamamoto, Kazuo*; Watanabe, Hiroshi
Plant Physiol. (Plant Gene Register PGR98-180), 118, 1101 Pages, 1998/00
no abstracts in English
; ; ; Tobita, Tsutomu; Minato, Kazuo; Yamamoto, Katsumune; ;
JAERI-M 87-020, 79 Pages, 1987/02
no abstracts in English
Yamamoto, Tomohiko; Negishi, Kazuo*; Hara, Hiroyuki*
no journal, ,
The JSFR adopts SCCV for the improvement of quality and economic efficiency. For commercialization of JSFR, we have carried out the research and development of not only the study on SCCV structure and construction term at the site but also the material strength test and analysis. These series presentation show the results. In this presentation, the results of study on construction methods are shown.
Yamamoto, Tomohiko; Kato, Atsushi; Chikazawa, Yoshitaka; Negishi, Kazuo; Oya, Takeaki*; Iwasaki, Mikinori*; Hara, Hiroyuki*; Akiyama, Yo*
no journal, ,
JSFR plans to adopt the steel-plate reinforced concrete (SC) structure for the containment vessel (CV). Since it has not been proven for CV as of last year, material test and the characteristic study were conducted for the SC structure. In addition, FEM as the CV analytical evaluation method was investigated. This report shows the results of experimental analyses and the update of the analytical evaluation method for the SC structure.
