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Osaka, Masahiko; Nakajima, Kunihisa; Miwa, Shuhei; Di Lemma, F. G.*; Miyahara, Naoya; Suzuki, Chikashi; Suzuki, Eriko; Okane, Tetsuo; Kobata, Masaaki
Proceedings of 8th European Review Meeting on Severe Accident Research (ERMSAR 2017) (Internet), 11 Pages, 2017/05
Fundamental research on fission product (FP) chemistry is underway at Japan Atomic Energy Agency. The purpose is to establish a FP chemistry database in each region of a LWR under severe accident conditions. Improvement of FP chemical models based on this database is also an important task of the research. Research outputs are reflected to the research and development of decommissioning of Fukushima Daiichi Nuclear Power Station (1F) and the enhancement of LWR safety. Four research items have thus been established considering the specific issues of 1F and the priority in the source term research area, as follows: - Effects of boron (B) release kinetics and thermal-hydraulic conditions on FP behavior, - Cesium (Cs) chemisorption and reactions with structural materials, - Establishment of a thermodynamic and thermophysical properties database for FP compounds, - Development of experimental and analytical techniques for the reproduction of FP behavior. In this paper, results and progress of the research are presented.
Sato, Isamu; Onishi, Takashi; Tanaka, Kosuke; Iwasaki, Maho; Koyama, Shinichi
Journal of Nuclear Materials, 461, p.22 - 28, 2015/06
Times Cited Count：8 Percentile：55.87(Materials Science, Multidisciplinary)In order to evaluate B influence on the release and transport of Cs and I during severe accidents, basic experiments have been performed on the interaction between deposited Cs/I compounds and vapor/aerosol B compounds. CsI and B
O
were utilized as a Cs/I compound and a B compound, respectively. Deposited CsI on the thermal gradient tube (TGT), which is exposed to temperatures ranging from 423 K to 1023 K was reacted with vapor/aerosol BO, and then observed to determine how it changed Cs/I decomposition profiles. As a result, vapor/aerosol BO stripped a portion of deposited CsI within a temperature range from 830 K to 920 K to make gaseous CsBO and I. In addition, gaseous I was re-deposited at a temperature range from 530 K to 740 K, while CsBO travelled through the sampling tubes and filters without deposition. It is implied that B influences Cs carriers such as CsBO to transport Cs to the colder regions.
Uetsuka, Hiroshi
Saishin Kaku Nenryo Kogaku; Kodoka No Genjo To Tembo, p.156 - 162, 2001/06
no abstracts in English
Hidaka, Akihide; Kudo, Tamotsu; Nakamura, Takehiko; Hayashida, Retsu*; Otomo, Takashi; Nakamura, Jinichi; Uetsuka, Hiroshi
JAERI-Research 99-066, p.38 - 0, 1999/12
JAERI-Research-99-066.pdf:6.68MB
no abstracts in English
Hidaka, Akihide; Nakamura, Takehiko; Nishino, Yasuharu; Kanazawa, Hiroyuki; Hashimoto, Kazuichiro; Harada, Yuhei; Kudo, Tamotsu; Uetsuka, Hiroshi; Sugimoto, Jun
JAERI-Conf 99-005, p.211 - 218, 1999/07
no abstracts in English
Suzuki, Motoe; Saito, Hioraki*
JAERI-Data/Code 94-011, 178 Pages, 1994/09
JAERI-Data-Code-94-011.pdf:3.84MB
no abstracts in English
Nakamura, Takehiko; Hashimoto, Kazuichiro; Uetsuka, Hiroshi; Nishino, Yasuharu; *
JAERI-M 93-222, 64 Pages, 1993/11
no abstracts in English
Fink, J. K.*; Corradini, M.*; Hidaka, Akihide; Honta
n, E.*; Mignanelli, M. A.*; Schr
dl, E.*; Strizhov, V.*
KfK-5108; NEA/CSNI/R(92)10, p.533 - 546, 1992/00
no abstracts in English
coated particle fuelAkabori, Mitsuo; Fukuda, Kosaku
Journal of Nuclear Materials, 183, p.70 - 75, 1991/00
Times Cited Count：5 Percentile：53.87(Materials Science, Multidisciplinary)no abstracts in English
; Tanifuji, Takaaki
Journal of Nuclear Materials, 59(3), p.243 - 256, 1976/03
no abstracts in English
Journal of Nuclear Materials, 57(1), p.56 - 68, 1975/01
no abstracts in English
JAERI-M 5691, 18 Pages, 1974/04
no abstracts in English
During Postirradiation HeatingIwamoto, K.;
JAERI-M 4500, 18 Pages, 1971/07
no abstracts in English
Osaka, Masahiko; Miwa, Shuhei; Nakajima, Kunihisa; Suzuki, Chikashi
no journal, ,
Research outline for fission product chemistry is introduced. Research plan, experiment, analysis and evaluation, together with subject and procedure of the FP-chemistry, are given. The purpose is to construct a database for FP chemistry at each stage of reactor under SA conditions and improvement of FP chemical model. Acquisition of experimental data for FP chemical form are carried out and their chemical kinetic analysis is performed for the database construction.
Osaka, Masahiko; Miwa, Shuhei; Nakajima, Kunihisa; Di Lemma, F. G.; Suzuki, Chikashi; Nagase, Fumihisa
no journal, ,
Chemical behavior of fission product (FP) are of crucial importance for the improvement of FP release and transport behavior under the severe accident. Fundamental research on FP sorption behavior and evaluation of FP chemical composition in the reactor are introduced.
