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Amaya, Masaki; Udagawa, Yutaka; Narukawa, Takafumi; Mihara, Takeshi; Taniguchi, Yoshinori
Proceedings of Annual Topical Meeting on LWR Fuels with Enhanced Safety and Performance (TopFuel 2016) (USB Flash Drive), p.53 - 62, 2016/09
In order to evaluate adequacy of present safety criteria and safety margins in terms of advanced fuels and provide a database for future regulation on them, JAEA started an extensive research program called ALPS-II program, which has been sponsored by NRA, Japan. This program is primarily composed of tests simulating a RIA and a LOCA on the high-burnup advanced fuels irradiated in commercial PWR or BWR. Recently, the failure limits of the high-burnup advanced fuels under RIA conditions were investigated at NSRR, and post-test examinations on the fuel rods after the pulse irradiation tests are being performed. In terms of the simulated LOCA test, integral thermal shock tests and high temperature oxidation tests were carried out at RFEF, and the fracture limits, high temperature oxidation rate, etc. of the high-burnup advanced fuel cladding were investigated. This paper mainly describes some recent experimental results obtained in this program with respect to RIA and LOCA.
Saeki, Masakatsu
JAERI-Review 2004-011, 54 Pages, 2004/03
JAERI-Review-2004-011.pdf:5.21MB
In this review, experimental results on studies of radioactive iodine, tritium and neptunium are summarized. On studies of radioactive iodine, from various experimental results, the process establishing the formation mechanism of organic iodides was fully described. On the basis of formation mechanism, possibilities for the formation of organic iodides under nuclear reactor accidents and so on were also discussed. On studies of tritium, three topics were concisely described on the isotopic composition of tritium gases, the chemical forms and the diffusivity of tritium in various materials, and the sorption and desorption behaviors of tritium on surfaces of various materials. On the neptunium chemistry, the relationship between the structure of neptunium compound and the Moessbauer isomer shift and experimental results on neptunyl(VI) hydroxides were discussed.
Kobayashi, Tadayoshi; Miyajima, Kazutoshi; Yanagihara, Satoshi
Gekkan Shobo, 23(6), p.22 - 26, 2001/06
no abstracts in English
Yoshinaga, Makio; Nakamura, Takehiko; Yamazaki, Toshi*
JAERI-Tech 2000-017, p.59 - 0, 2000/03
JAERI-Tech-2000-017.pdf:2.31MB
no abstracts in English
Yamano, Norihiro; Sugimoto, Jun; Maruyama, Yu; Hidaka, Akihide; Kudo, Tamotsu; Soda, Kunihisa
Nuclear Engineering and Design, 145(3), p.365 - 374, 1993/12
Times Cited Count：2 Percentile：29.78(Nuclear Science & Technology)no abstracts in English
; Kobayashi, Hideo
Proc. of Asia Congress on Radiation Protection, p.199 - 202, 1993/00
no abstracts in English
Yamano, N.; Sugimoto, Jun; Maruyama, Yu; Hidaka, Akihide; Soda, Kunihisa
JAERI-M 92-055, 14 Pages, 1992/03
no abstracts in English
Yamano, N.; Sugimoto, Jun; Maruyama, Yu; Hidaka, Akihide; Soda, Kunihisa
NUREG/CP-0120, p.439 - 455, 1992/00
no abstracts in English
Homma, Toshimitsu; Togawa, Orihiko; *
EUR-13013-2, p.1049 - 1063, 1991/00
no abstracts in English
Nomura, Yasushi
JAERI-M 90-158, 53 Pages, 1990/09
no abstracts in English
; Kuriyama, Isamu; *; *
IEEE Transactions on Electrical Insulation, 17(4), p.306 - 313, 1982/00
no abstracts in English
; ; *
JAERI-M 8482, 56 Pages, 1979/10
no abstracts in English
Kaji, Yoshiyuki; Nemoto, Yoshiyuki; Takase, Kazuyuki; Tojo, Masayuki*; Goto, Daisuke*; Iwata, Yutaka*; Otake, Yukihiko*; Nishimura, Satoshi*; Suzuki, Hiroaki*
no journal, ,
We will make quantitatively clear the phenomenon of fuel air oxidation mechanism, fuel failure mechanism after loss of coolant and criticality risks during and after sever accidents of Spent Fuel Pool(SFP) and clarify the quantitative effects of enhancements of SFP safety such as Spray and fuel loading patterns. We will report the whole plan in this presentation.
Kobayashi, Kensuke*; Goto, Daisuke*; Tojo, Masayuki*; Ikehara, Tadashi*; Kaji, Yoshiyuki; Nemoto, Yoshiyuki
no journal, ,
We evaluate fuel temperature based on the steady state heat transfer analysis with considering accurate fuel history and storage conditions.
Chitose, Hiromasa*; Watanabe, Satoshi*; Sadamatsu, Hideaki*; Iwata, Yutaka*; Kaji, Yoshiyuki; Nemoto, Yoshiyuki
no journal, ,
We researched the recent enhancements of regulations and solutions related Spent Fuel Pool safety and reported the analytical results about problems and evaluation procedures related effectiveness evaluation of safety measures.
Nemoto, Yoshiyuki; Kaji, Yoshiyuki; Ogawa, Chihiro; Nakashima, Kazuo*; Tojo, Masayuki*; Kanazawa, Toru*; Goto, Daisuke*
no journal, ,
In order to investigate the air oxidation behavior of cladding materials for study on improvement of safety in spent fuel pool loss of coolant accident condition, both isothermal oxidation tests by short length specimens and oxidation tests with temperature gradient by long length specimens were conducted and the knowledge on influence of temperature and air flow rate on cladding oxidation behavior was obtained in this study.
Suzuki, Hiroaki*; Morita, Yoshihiro*; Naito, Masanori*; Kaji, Yoshiyuki; Nemoto, Yoshiyuki
no journal, ,
Severe accident code SAMPSON was upgraded by introducing the models of Zr oxidation in air, and spray cooling, etc, in this study. Analytical results on spent fuel pool (SFP) accident were obtained and effectiveness of the spray cooling system for the safety measure of the SFP was discussed in this study.
