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Watanabe, Yuichi*; Muramatsu, Ken; Oikawa, Tetsukuni
Nuclear Engineering and Design, 235(23), p.2495 - 2512, 2005/12
Times Cited Count:2 Percentile:17.54(Nuclear Science & Technology)This paper presents an evaluation of seismic capacity of a group of vertical U-tube type heat exchangers(HXs) with support frames for residual heat removal systems of BWRs for seismic Probabilistic Safety Assessment in Japan. The median capacity was evaluated by a time history response analysis with a detailed model for a representative HX selected from four HXs. The logarithmic standard deviation(LSD) for uncertainty due to lack of knowledge was evaluated with consideration of the variabilities in three influential parameters, i.e., diameter of anchor bolt, weight of HX and position of center of gravity of HX. The dominant failure mode of HXs was the failure of anchor bolts of lugs mainly due to shearing stress. The capacity expressed in terms of zero period acceleration on the foundation of HX was evaluated to be 4,180 Gal(4.3 g) for median, LSD for uncertainty due to randomness was 0.11 from the variability in material property and LSD due to lack of knowledge was 0.21 to 0.53 depending on combination of the variability in design parameters to be considered.
Furuichi, Mitsuaki*; Toida, Masaru*; Masumoto, Kazuhiko*
JNC TJ8400 2000-021, 196 Pages, 2000/02
For the geological disposal of high level radioactive wastes, after placement of tbe wastes, it is necessary to close off (to be called "sealing" hereafter) the underground potential passages (disposal pits, disposal tunnels, main and connecting tunnels and access tunnels) with an effective combination of engineered barriers such as buffers, backfilling materials, plugs and grout. It is necessary to ensure the long-term durability to isolate disposed wastes in the system. The results of the research works this year are as follows; (1)The objectives are to discuss the design of tunnel sealing experiments at URL site. The results of research were about (a)tracer experiment and numerical analysis (b)evaporation measurement (c)presentation at the coordination meeting (2)The discussion was about the equipment of inclined compaction methods and bearing capacity of rock against pressures for the concrete plugs.
Toida, Masaru*; Masumoto, Kazuhiko*; ; Okutsu, Kazuo*;
JNC TJ8400 2000-020, 68 Pages, 2000/02
For the geological disposal of high level radioactive wastes, after placement of the wastes, it is necessary to close off (to be called "sealing" hereafter) the underground potential passages (disposal pits, disposal tunnels, main and connecting tunnels and access tunnels) with an effective combination of engineered barriers such as buffers, backfiling materials, plugs and grout. It is necessary to ensure the long-term durability to isolate disposed wastes in the system. The results of the research works this year are as follows ; (1)The objectives are to discuss the design of tunnel sealing experiments at URL site. The results of research were about (a)tracer experiment and numerical analysis (b)evaporation measurement (c)presentation at the coordination meeting. (2)The discussion was about the equipment of inclined compaction methods and bearing capacity of rock against pressures for the concrete plugs.
Harada, Yuhei; Maruyama, Yu; Maeda, Akio; Shibazaki, Hiroaki*; Kudo, Tamotsu; Hidaka, Akihide; Hashimoto, Kazuichiro; Sugimoto, Jun
Journal of Nuclear Science and Technology, 36(10), p.923 - 933, 1999/10
Times Cited Count:3 Percentile:28.69(Nuclear Science & Technology)no abstracts in English
JAERI-Research 99-035, 314 Pages, 1999/05
no abstracts in English
; ; ; ; Abe, Kiyoharu
JAERI-Research 96-059, 73 Pages, 1996/11
no abstracts in English
; ; ;
PSA95: Proc. of Probabilistic Safety Assessment Methodology and Applications, 2, p.715 - 720, 1995/00
no abstracts in English
Muramatsu, Ken
Proc. of 10th Sino-Jananese Seminar on Nuclear Safety, 0, p.1.3.1 - 1.3.16, 1995/00
no abstracts in English
Matsumoto, Kiyoshi; Muramatsu, Ken; ;
The 3rd JSME/ASME Joint Int. Conf. on Nuclear Engineering, Vol. 3, 0, p.1385 - 1392, 1995/00
no abstracts in English
Dai-9-Kai Nihon Jishin Kogaku Shimpojiumu (1994) Rombunshu, Dai-1-Bunsatsu, 0, p.1699 - 1704, 1994/00
no abstracts in English
Matsumoto, Kiyoshi; Muramatsu, Ken
Denshi Joho Tsushin Gakkai Gijutsu Kenkyu Hokoku, 92(51), p.33 - 37, 1993/02
no abstracts in English
Kurata, Yuji; Nakajima, Hajime
JAERI-M 90-157, 38 Pages, 1990/09
no abstracts in English
;
Nihon Kenchiku Gakkai Rombun Hokokushu, (70), p.32 - 37, 1962/02
no abstracts in English
Shizukawa, Yuta; Tanno, Takashi; Yano, Yasuhide
no journal, ,
no abstracts in English