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Kobayashi, Jun; Ezure, Toshiki; Kamide, Hideki; Oyama, Kazuhiro*; Watanabe, Osamu*
Proceedings of 23rd International Conference on Nuclear Engineering (ICONE-23) (DVD-ROM), 6 Pages, 2015/05
A column type upper internal structure (UIS) is installed in the upper plenum of reactor vessel in JSFR. High cycle thermal fatigue may occur at the bottom plate (CIP) of the UIS where the hot sodium from the fuel subassembly can mix with the cold sodium from the control rod channel and the blanket fuel subassembly. We have been conducted a water experiment using a reactor upper plenum model to grasp the thermal-hydraulic phenomena around control rod (CR) channels, and to obtain countermeasures for significant temperature fluctuation on the CIP. The experimental apparatus has 1/3 scale and 60
sector model of the reactor upper plenum. By the experiment, characteristics of fluid temperature fluctuation between the handling head of the assemblies and the CIP are measured and countermeasure for the significant temperature fluctuation generation will be discussed on the influence of the distance from the handling head outlet to the lower surface of the CIP.
Kasahara, Junzo; Tsuruga, Kayoko; Hasada, Yoko; Yamaoka, Koshun; Kunitomo, Takahiro; Watanabe, Toshiki; Fujii, Naoyuki
2004 AGU Fall Meeting Program and Abstract, S31C-07, 0 Pages, 2004/00
Recently, a very strong reflected PP phase from the subducting plate boundary was found beneath the aseismic forearc slope of the Japan Trench. Similar strong PP reflection phase was observed near the plate boundary of the subducting Philippine Sea Plate and the Eurasian Plate, in the western part of Shizuoka Prefecture. These strong PP reflections are interpreted as reflections from the non-asperity region along the plate boundary caused by the presence of low-Vp material. Using continuous transmission of seismic waves from the ACROSS source located and /or the new ACROSS source under planning and the high sensitivity seismometers along the NS traverse line, we can delineate the temporal variation of seismic wave properties of the anomalously reflected PP phase along the boundary of subducting Philippine Sea Plate.
*; *; Yabuuchi, Satoshi
JNC TY7400 2000-001, 72 Pages, 2000/03
JNC-TY7400-2000-001.pdf:4.01MB
None
*; *
JNC TJ7400 2000-001, 79 Pages, 2000/02
JNC-TJ7400-2000-001.pdf:3.07MB
no abstracts in English
Watanabe, Katsutoshi; Shindo, Masami; Nakajima, Hajime; Koikegami, Hajime*; Higuchi, Makoto*; Nakanishi, Tsuneo*; Sahira, Kensho*; Marushichi, Koki*; Takeiri, Toshiki*; Saito, Teiichiro*; et al.
JAERI-Research 97-009, 62 Pages, 1997/02
JAERI-Research-97-009.pdf:4.82MB
no abstracts in English
Watanabe, Katsutoshi; Nakajima, Hajime; Saito, Teiichiro*; Takatsu, Tamao*; Koikegami, Hajime*; Higuchi, Makoto*; Nakanishi, Tsuneo*; Sahira, Kensho*; Marushichi, Koki*; Takeiri, Toshiki*
JAERI-Research 94-046, 50 Pages, 1994/12
JAERI-Research-94-046.pdf:2.23MB
no abstracts in English
Watanabe, Katsutoshi; Nakajima, Hajime; Sahira, Kensho*; Marushichi, Koki*; Takeiri, Toshiki*; Saito, Teiichiro*; Takatsu, Tamao*; Nakanishi, Tsuneo*; Koikegami, Hajime*; Higuchi, Makoto*
Proc. of the 2nd JAERI Symp. on HTGR Technologies; Oct. 21
23,1992,Oarai,Japan (JAERI-M 92-215), p.560 - 574, 1993/01
no abstracts in English
Watanabe, Katsutoshi; Nakajima, Hajime; Sahira, Kensho*; Marushichi, Koki*; Takeiri, Toshiki*; Saito, Teiichiro*; Takatsu, Tamao*; Nakanishi, Tsuneo*; Koikegami, Hajime*; Higuchi, Makoto*
Tainetsu Kinzoku Zairyo Dai-123-Iinkai Kenkyu Hokoku, 33(2), p.227 - 242, 1992/00
no abstracts in English
Watanabe, Katsutoshi; Nakajima, Hajime; Sahira, Kensho*; Marushichi, Koki*; Takeiri, Toshiki*; Saito, Teiichiro*; Takatsu, Tamao*; Nakanishi, Tsuneo*; Koikegami, Hajime*; Higuchi, Makoto*
JAERI-M 91-189, 67 Pages, 1991/11
no abstracts in English
Watanabe, Katsutoshi; Nakajima, Hajime; Sahira, Kensho*; Marushichi, Koki*; Takeiri, Toshiki*; Saito, Teiichiro*; Takatsu, Tamao*; Nakanishi, Tsuneo*; Tsuji, Hirokazu; Tsukada, Takashi
JAERI-M 91-181, 81 Pages, 1991/11
no abstracts in English
Watanabe, Katsutoshi; Nakajima, Hajime; Sahira, Kensho*; *; Takeiri, Toshiki*; Saito, Teiichiro*; Takatsu, Tamao*; Nakanishi, Tsuneo*
Journal of Nuclear Materials, 185, p.8 - 18, 1991/00
Times Cited Count：2 Percentile：31.86(Materials Science, Multidisciplinary)no abstracts in English
Watanabe, Katsutoshi; Nakajima, Hajime; Sahira, Kensho*; *; Takeiri, Toshiki*; Saito, Teiichiro*; Takatsu, Tamao*; Nakanishi, Tsuneo*
JAERI-M 89-206, 120 Pages, 1989/12
no abstracts in English
Kumazawa, Mineo; Ogawa, Katsuro*; Fujii, Naoyuki; Yamaoka, Koshun; Kunitomo, Takahiro; Nakajima, Takahiro; Tsuruga, Kayoko; Hasada, Yoko; Kasahara, Junzo; Shigeta, Naotaka; et al.
no journal, ,
no abstracts in English
Asamori, Koichi; Kunitomo, Takahiro; Nakajima, Takahiro; Ohara, Hidefumi*; Shigeta, Naotaka; Watanabe, Toshiki; Kumazawa, Mineo
no journal, ,
The electromagnetic (EM) and seismic ACROSS have been installed around the Horonobe Underground Research Laboratory and experimental monitoring prior to the construction of the underground facilities was started. The EM and seismic ACROSS are consisted a transmitter and 3 receiver stations. These receivers are about 1-2 km away from the transmitter. The observed spectrum by operating ACROSS show that the amplitude of frequency bands correspond to the transmitted signal are higher than that of other frequency bands. It is indicates that the transmitted signal was certainly received.
Watanabe, Yoshiyuki; Morishita, Kazunori*; Nakasuji, Toshiki*; Hamaguchi, Dai; Ando, Masami*; Tanigawa, Hiroyasu
no journal, ,
no abstracts in English
