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Watanabe, Yusuke; Hayashida, Kazuki; Kato, Toshihiro; Kubota, Mitsuru; Aosai, Daisuke*; Kumamoto, Yoshiharu*; Iwatsuki, Teruki
JAEA-Data/Code 2018-002, 108 Pages, 2018/03
JAEA-Data-Code-2018-002.pdf:6.53MB
Japan Atomic Energy Agency has been investigating groundwater chemistry to understand the effect of excavation and maintenance of underground facilities as part of the Mizunami Underground Research Laboratory (MIU) Project in Mizunami, Gifu, Japan. In this report, we compiled data of groundwater chemistry and microbiology obtained at the MIU in the fiscal year 2016 and 2014 to 2016, respectively. In terms of ensuring traceability of data, basic information (e.g. sampling location, sampling time, sampling method and analytical method) and methodology for quality control are described.
Uchida, Shunsuke; Hanawa, Satoshi; Lister, D. H.*
Power Plant Chemistry, 17(6), p.328 - 339, 2015/12
In nuclear power plants, radiation makes the relationship between structural materials and water chemistry much more complex than that in fossil fueled power plants. It is difficult to maintain safer and more reliable plant operation by controlling water chemistry based on only a restricted number of measured data. It is often required to control water chemistry with suitable assistance from computer models, which can extrapolate measured water chemistry parameters to those at the required locations and predict future trends of the interactions between structural materials and water chemistry. In the paper, water chemistry control based on parameters determined with plant simulation models and major computational models to be applied for water chemistry control are discussed.
Otobe, Haruyoshi; Kitatsuji, Yoshihiro; Kurata, Masaki; Takano, Masahide
Proceedings of 2014 Nuclear Plant Chemistry Conference (NPC 2014) (USB Flash Drive), 11 Pages, 2014/10
The chemical and transport behaviors of Pu and U in the corroded debris must be understood for the criticality safety control of Pu and U in the debris, especially for the removal operations and storage. Therefore, the chemical changes of UO
and PuO powders, disks and U and Pu metal disks in HO aqueous solution have been checked, where HO is formed by the radiolysis of HO. As a result, UO changed to hydrated uranium peroxide, whereas the PuO remained unchanged. U metal was more reactive with HO aqueous solution than Pu metal. The chemical changes of the mixed UO/PuO powders in HO aqueous solution have been investigated. The dried slurry of the middle zone of HO aqueous solution was mainly composed of hydrated uranium peroxide, whereas the dried powder of the bottom zone was mainly composed of PuO.
Yamaguchi, Tetsuji; Minase, Naofumi; Iida, Yoshihisa; Tanaka, Tadao; Nakayama, Shinichi
JAERI-Conf 2005-007, p.150 - 155, 2005/08
no abstracts in English
Kaji, Yoshiyuki; Tsukada, Takashi
Proceedings of 11th German-Japanese Workshop on Chemical Information, p.101 - 103, 2003/06
The JAERI Material Performance Database (JMPD) was developed with a view to utilizing material performance data efficiently. Data from more than 11,600 test pieces are prepared for data evaluation in the JMPD. Some kinds of data analyses for mechanical properties have been performed by utilizing the JMPD. Irradiation Assisted Stress Corrosion Cracking (IASCC) of austenitic stainless steels in high temperature water is considered to be one of the key issues for life assessment of the core internals of nuclear power plants. This paper describes the present status of the JMPD and additional function of JMPD for analysis of IASCC data.
Ota, Kunio; Nakano, Katsushi; Metcalfe, R.; Ikeda, Koki; ; Amano, Kenji; Takeuchi, Shinji; Hama, Katsuhiro; Matsui, Hiroya
JNC TN7410 99-007, 44 Pages, 1999/08
Tsukada, Takashi
Proceedings of Seminar on Water Chemistry of Nuclear Reactor Systems '99, p.26 - 32, 1999/00
no abstracts in English
Onizawa, Kunio; ; ;
JAERI-M 90-202, 33 Pages, 1990/11
no abstracts in English
Iwatsuki, Teruki; Murakami, Hiroaki
no journal, ,
We reproduced the groundwater quality in granite up to a depth of about 1000m using the geochemical simulation code, and devised a method to identify the major minerals involved in the evolution of water quality. We also estimated the long-term water-rock interaction of these minerals based on groundwater ages.
Shimodaira, Masaki; Hata, Kuniki; Iwata, Keiko; Ha, Yoosung; Kasahara, Shigeki; Katsuyama, Jinya
no journal, ,
no abstracts in English
Hata, Kuniki; Hanawa, Satoshi; Chimi, Yasuhiro; Uchida, Shunsuke
no journal, ,
no abstracts in English
Hata, Kuniki; Iwata, Keiko; Shimodaira, Masaki; Ha, Yoosung; Takamizawa, Hisashi; Katsuyama, Jinya
no journal, ,
no abstracts in English
Hanawa, Satoshi; Kawamura, Hirotaka*; Akamine, Hiroshi*; Shoda, Yasuhiko*; Nagase, Makoto*; Umehara, Ryuji*
no journal, ,
no abstracts in English
Hata, Kuniki; Uchida, Shunsuke*; Hanawa, Satoshi; Chimi, Yasuhiro; Sato, Tomonori
no journal, ,
no abstracts in English
