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Tsunashima, Yasumichi; Shimazaki, Masao; Ohashi, Yusuke; Tanaka, Yoshio; Nomura, Mitsuo
no journal, ,
The operation waste of uranium conversion plant and uranium enrichment plant is called sludge, and contains many fluoride which is deleterious material. For disposal, elution of fluoride is a problem. Moreover, sludge contains many calcium sulfate and we are anxious about expansion of cement solidification object by superfluous generation ofettringite. Therefore, we report solidification and the leaching property of the cement solidification object of the sludge containing many fluoride. Moreover, we report solidification and the leaching property of sludge using magnesium oxide solidification material as a method of controlling elution and expansion of fluoride.
Amano, Yuki; Amamiya, Hiroki; Murakami, Hiroaki; Iwatsuki, Teruki; Terashima, Motoki; Mizuno, Takashi; Kirishima, Akira*; Kuno, Atsushi*; Sasaki, Takayuki*; Kubota, Takumi*; et al.
no journal, ,
no abstracts in English
Hata, Haruhi; Yokoyama, Kaoru; Tanaka, Yoshio; Ohara, Yoshiyuki; Sugitsue, Noritake
no journal, ,
For decommission of uranium handling facilities, it is important to characterize the details of the facilities, which are the distribution of nuclide, the existence of hazardous waste and so on. The report suggests classification method based on the nuclide composition by using principal component analysis.
Ozawa, Kazumi; Nozawa, Takashi; Toyoshima, Kazuoki*; Tanigawa, Hiroyasu; Hinoki, Tatsuya*
no journal, ,
no abstracts in English
CChiba, Noriaki; Maeda, Toshikatsu; Yamaguchi, Tetsuji
no journal, ,
no abstracts in English
Yamamoto, Ryuichi
no journal, ,
The risk communication office of Nuclear fuel Cycle engineering Laboratories in JAEA has experience of the risk communication research more than ten years. Suffering the nuclear hazard which occurred on March 11, 2011, the risk communication office started interactive communication activity aiming at the improvement in literacy about the civic radiation and radioactivity of Ibaraki Prefecture and Fukushima Prefecture by making it into a background. This aimed at the uneasiness of the citizen by the improvement in literacy, and anxious mitigation. In this activity, the questionnaire survey is conducted simultaneously and it has already been going to just introduce analysis of that result by several pieces of verbal reports since the AESJ autumn convention of last year. Here, the meaning and suggestion which can be drawn up from there are discussed, quoting the data of a previous report.
Kato, Atsushi; Kubo, Shigenobu; Chikazawa, Yoshitaka; Nakata, Shuhei*; Yokoi, Shinobu*
no journal, ,
Plant design studies against "Loss of heat removal system" event were carried out based on the safety design criteria for 4th generation sodium-cooled fast reactor discussing in the Generation-IV international forum (GIF-SFR-SDC). This presentation introduces equipment specification study to match the GIF-SFR-SDC.
Ono, Yosuke; Yokoyama, Hitoshi*; Watanabe, Naoki; Miyauchi, Masami; Shuji, Yoshiyuki; Daidai, Misao
no journal, ,
no abstracts in English
Nanri, Tomohiro; Kishimoto, Katsumi; Satoyama, Tomonori; Takaizumi, Hirohide; Kanno, Tomoyuki; Maruyama, Tatsuya; Yoshimori, Michiro
no journal, ,
no abstracts in English
Okuda, Eiji; Fujinaka, Hideaki; Suzuki, Toshiaki; Shimizu, Hisashi*; Kondo, Katsumi*
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no abstracts in English
Nakamura, Shoji; Kitatani, Fumito; Harada, Hideo; Fujii, Toshiyuki*; Uehara, Akihiro*; Yamana, Hajimu*
no journal, ,
The neutron capture cross section of Np-237 was measured by a neutron activation method at the Kyoto University Research Reactor (KUR).
Nishida, Akemi
no journal, ,
This research develops methodology for quantification of uncertainty associated with final results from seismic probabilistic risk assessment (SPRA) in the framework of risk management of NPP facilities. In this research, we take a role of aggregation of expert opinion on structure/equipment fragility estimation and development of implementation guidance on epistemic uncertainty (modeling uncertainty). In this report, A model plant data which will be used for seismic response analysis and sensitivity study is shown.
Tanaka, Kosuke; Suto, Mitsuo; Onishi, Takashi; Akutsu, Yoko; Obayashi, Hiroshi; Koyama, Shinichi; Yoshitake, Tsunemitsu; Yamashita, Shinichiro; Sekioka, Ken*; Ishigamori, Toshio*
no journal, ,
Chemical analysis of artificial seawater after immersion tests of irradiated fuel was carried out.
Nozawa, Takashi; Tanigawa, Hiroyasu
no journal, ,
SiC/SiC composite is one of promising candidates of advanced fusion blanket system. SiC/SiC composites with continuous fiber reinforcement specifically fails in quasi-ductile manner and this becomes a strong merit compared with brittle ceramics. However, this quasi-ductility is totally different from ductility of metals and hence material design standard and codes needs to be established. It is also important to identify the effect of permanent damage accumulation on the failure process and to identify the allowed geometry and size of flaws for the design. This study aims to fully understand the detailed tensile failure process by acoustic emission. Strength anisotropy of composites is specifically summarized by clarifying tensile failure mechanism by various failure modes, which can be achieved by tensile loading with various loading directions.
Yamamoto, Tomohiko; Kato, Atsushi; Kubo, Shigenobu; Chikazawa, Yoshitaka; Sakaba, Hiroshi*; Sakashita, Takeshi*
no journal, ,
JSFR is planning to adopt a steel plate reinforced concrete (SC) structure for containment vessel (CV). This paper describes the analyses of hypothetical sodium combustion and load condition in the CV.
Murakami, Hisatomo; Kitamura, Seiji; Yamazawa, Tomoyuki*; Ikarimoto, Iwao*; Kan, Taro*
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no abstracts in English
Sato, Makoto; Fukaya, Hiroyuki; Umeda, Miki; Suyama, Kenya; Tonoike, Kotaro; Kamohara, Keiko*; Suzuki, Norihisa*
no journal, ,
no abstracts in English
Kashima, Takao; Suyama, Kenya; Uchida, Yuriko; Tonoike, Kotaro; Takada, Tomoyuki*
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no abstracts in English
Miyoshi, Nobuaki; Kadowaki, Haruhiko; Matsuo, Hidehiko; Matsushima, Akira
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no abstracts in English
Yoshida, Hiroyuki; Nagatake, Taku; Takase, Kazuyuki; Kaneko, Akiko*; Monji, Hideaki*; Abe, Yutaka*
no journal, ,
no abstracts in English