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JAEA Reports

Research and development of in-situ measurement for radiation distribution of waterbed

Sanada, Yukihisa; Takamura, Yoshihide; Urabe, Yoshimi; Tsuchida, Kiyofumi; Nishizawa, Yukiyasu; Yamada, Tsutomu; Sato, Yoshiharu; Hirayama, Hirokatsu; Nishihara, Katsuya; Imura, Mitsuo; et al.

JAEA-Research 2014-005, 67 Pages, 2014/05

JAEA-Research-2014-005.pdf:52.68MB

Distribution of radiocesium existing on the waterbed such as lake or pond was concerned about at the present that passed for two years by an accident. Here, the direct measurement technique of the radiocesium concentration (in-situ measurement technique) was developed. This method was used an plastic scintillation detector (p-Scanner). This detector carried out quick measurement of a large area. In addition, the count-rate of p-Scanner was converted to the radiocesium concentration (Ba/kg-wet) by comparative measurement of $$gamma$$-ray spectrometer. We applied the technique to the agricultural pond in Fukushima and made a map of distribution of radiocesium concentration.

JAEA Reports

Feasibility Study on Commercialization of Fast Breeder Reactor Cycle Systems, Interim Report of Phase2 -Technical Study Report for Nuclear Fuel Cycle Systems-

Sato, Koji; Koma, Yoshikazu; Inoue, Akira; Yonezawa, Shigeaki; Takata, Takeshi; Nakabayashi, Hiroki; Namekawa, Takashi; Kawaguchi, Koichi

JNC TN9400 2004-036, 1051 Pages, 2004/06

JNC-TN9400-2004-036.pdf:90.95MB

The plant concept concerning the fuel cycle systems (combination of the reprocessing and the fuel fabrication )has been constructed to reduce their total cost by the introduction of various innovative techniques and to apply their utmost superior efficiency from such standpoints of a decrease in the environmental burden, better resource utilization and proliferation resistance improvement by the low decontamination transuranium element (TRU) recycle. For economical efficiency, less than 0.8 yen/kWh which is the demand value (total of the reprocessing expense and the fuel fabrication expense) of the fuel cycle expense satisfied each combination case at 200 tHM/y scale provisionally set for large-scale facilities. On the other hand, the combination case with a low breeder reactor core has satisfied the demand value, with improvement of the average burnup by the radial direction blanket fuel deletion contributing to the decrease of the fuel cycle expense at 50 tHM/y scale provisionally set for small-scale facilities.

Journal Articles

Computer Simulation of Transport and Maintenance Methods in a Pyrochemical Reprocessing Plant Design

Yonezawa, Shigeaki;

Proceedings of 11th International Conference on Nuclear Engineering (ICONE-11) (CD-ROM), P. 36536, 2003/00

None

Journal Articles

Design study an advanced nuclear fuel recycling system; Conceptual design of recycling system using dry reprocessing technology

; ; Moro, Satoshi; Yonezawa, Shigeaki; ; Tozawa, Katsuhiro

Proceedings of International Conference on Future Nuclear Systems (GLOBAL'99), 0 Pages, 1999/00

None

Journal Articles

Design Study of the Advanced Recycle System using Molten Salt

; ; ; ; Yonezawa, Shigeaki; Takahashi, Katsuro

Proceedings of International Conference on Future Nuclear Systems (GLOBAL'97), 0 Pages, 1997/10

None

Oral presentation

Measurement of radiocesium distribution of bottom of water utilizing ROV

Yonezawa, Shigeaki; Sanada, Yukihisa; Yamada, Tsutomu; Urabe, Yoshimi; Hirayama, Hirokatsu; Nishihara, Katsuya; Imura, Mitsuo

no journal, , 

no abstracts in English

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