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Watanabe, Tadashi*; Katsuyama, Jinya; Mano, Akihiro
International Journal of Nuclear and Quantum Engineering (Internet), 13(11), p.516 - 519, 2019/10
The estimation of leak flow rates through narrow cracks in structures is of importance for nuclear reactor safety, since the leak flow could be detected before occurrence of loss-of-coolant accidents. The two-phase critical leak flow rates are calculated using the system analysis code, and two representative non-homogeneous critical flow models, Henry-Fauske model and Ransom-Trapp model, are compared. The pressure decrease and vapor generation in the crack, and the leak flow rates are found to be larger for the Henry-Fauske model. It is shown that the leak flow rates are not affected by the structural temperature, but affected largely by the roughness of crack surface.
Wan, T.; Saito, Shigeru
Metals, 8(8), p.627_1 - 627_22, 2018/08
Times Cited Count：17 Percentile：65.58(Materials Science, Multidisciplinary)Kurata, Yuji; Kikuchi, Kenji; Saito, Shigeru; Kamata, Kinya*; Kitano, Teruaki*; Oigawa, Hiroyuki
Proceedings of 4th International Workshop on the Utilisation and Reliability of High Power Proton Accelerators, p.267 - 277, 2004/05
R&D on lead-bismuth technology have been conducted for accelerator driven system. From the test results of 316SS using JLBL-1 for 3000h without active oxygen control, mass transfer from high temperature to low temperature parts was observed. It was found that deposition of Pb/Bi and Fe-Cr grains in the annular channel of the electro-magnetic pump caused plugging and decrease in flow rate. The modification of the loop system brought about a good effect on operation. Significant erosion/corrosion was not observed in the experiment using MES loop for 1000h under 10
wt.% oxygen condition. The results of static corrosion tests showed the following: corrosion depth decreased at 450
C with increasing Cr content in steels while corrosion depth of JPCA and 316SS became larger due to ferritization caused by dissolution of Ni and Cr at 550C. Si-added steel exhibited good corrosion resistance at 550C.
Haga, Katsuhiro; Kinoshita, Hidetaka; Kaminaga, Masanori; Hino, Ryutaro; Tagawa, Hisato*; Kukita, Yutaka*
Proceedings of 11th International Conference on Nuclear Engineering (ICONE-11) (CD-ROM), 8 Pages, 2003/04
The cross-flow type mercury target, in which mercury flows crossing the proton beam path, has been developed as the spallation target of the material and life science facility in the high intensity proton accelerator project. As a part of design optimization, we proposed a mercury target using perforated plates aiming to simplify the inner structure, to make the target assembling easier, and to decrease the assembling cost. Then, the effectiveness of the target structure was investigated by no-heat water experiments and computational analyses. A mockup model of the cross-flow type mercury target using perforated plates was fabricated with plexi-glass and the water flow field was measured using PIV technique and the results were compared with the analytical results. The cross-flow field was realized by perforated plates and the analytical results corresponded well with the experimental results in the proton beam path where the cooling of heat generation is important.
Kaminaga, Fumito*
JAERI-Tech 2002-012, 68 Pages, 2002/03
JAERI-Tech-2002-012.pdf:2.45MB
no abstracts in English
Iguchi, Tadashi; Asaka, Hideaki; Nakamura, Hideo
JAERI-Research 2002-006, 152 Pages, 2002/03
JAERI-Research-2002-006.pdf:5.52MB
no abstracts in English
Kato, Takashi
Tabo Kikai, 28(9), p.536 - 545, 2000/09
no abstracts in English
Nakamura, Hideo; Shibamoto, Yasuteru; Anoda, Yoshinari; Kukita, Yutaka*; Mishima, Kaichiro*; Hibiki, Takashi*
Nuclear Technology, 125(2), p.213 - 224, 1999/02
Times Cited Count：8 Percentile：53.55(Nuclear Science & Technology)no abstracts in English
Mishima, Kaichiro*; Hibiki, Takashi*; Saito, Yasushi*; Nakamura, Hideo; Matsubayashi, Masahito
Nuclear Instruments and Methods in Physics Research A, 424(1), p.66 - 72, 1999/00
Times Cited Count：22 Percentile：81.87(Instruments & Instrumentation)no abstracts in English
Kunii, Katsuhiko
Flow Visualization and Image Processing 1997, Vol.2, p.592 - 597, 1997/02
no abstracts in English
Mishima, Kaichiro*; Hibiki, Takashi*; Fujine, Shigenori*; Yoneda, Kenji*; Kanda, Keiji*; Nishihara, Hideaki*; Matsubayashi, Masahito; Tsuruno, Akira
Fifth World Conf. on Neutron Radiography, 0, p.140 - 147, 1996/00
no abstracts in English
Hibiki, Takashi*; Mishima, Kaichiro*; Matsubayashi, Masahito
Nuclear Technology, 110, p.422 - 435, 1995/06
Times Cited Count：19 Percentile：84.35(Nuclear Science & Technology)no abstracts in English
Kumamaru, Hiroshige; Murata, Hideo; ; Kukita, Yutaka
The 3rd JSME/ASME Joint Int. Conf. on Nuclear Engineering (ICONE),Vol. 1, 0, p.217 - 222, 1995/00
no abstracts in English
Maruyama, So; Fujimoto, Nozomu; Sudo, Yukio; Murakami, Tomoyuki*; Fujii, Sadao*
Nucl. Eng. Des., 152, p.183 - 196, 1994/00
Times Cited Count：15 Percentile：75.28(Nuclear Science & Technology)no abstracts in English
Hibiki, Takashi*; Mishima, Kaichiro*; Yoneda, Kenji*; Fujine, Shigenori*; Tsuruno, Akira; Matsubayashi, Masahito
Nuclear Instruments and Methods in Physics Research A, 351, p.423 - 436, 1994/00
Times Cited Count：36 Percentile：92.83(Instruments & Instrumentation)no abstracts in English
Takase, Kazuyuki; Hino, Ryutaro;
Nihon Genshiryoku Gakkai-Shi, 33(6), p.564 - 573, 1991/06
Times Cited Count：0 Percentile：0.01(Nuclear Science & Technology)no abstracts in English
Onuki, Akira; *; Iwamura, Takamichi; Iguchi, Tadashi; Abe, Yutaka; Murao, Yoshio
JAERI-M 91-033, 68 Pages, 1991/03
no abstracts in English
Nakamura, Hideo; Anoda, Yoshinari; Kukita, Yutaka
ANS Proc. 1991 National Heat Transfer Conf., Vol. 5, p.269 - 276, 1991/00
no abstracts in English
Onuki, Akira; ; Murao, Yoshio
Journal of Nuclear Science and Technology, 27(6), p.535 - 546, 1990/06
no abstracts in English
; Shibata, Katsuyuki; Isozaki, Toshikuni
JAERI-M 90-050, 106 Pages, 1990/03
no abstracts in English
