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Oral presentation

Characterization study of candidate technologies for nuclear material quantification in fuel debris at Fukushima Daiichi Nuclear Power Station, 3; Active neutron technique

Komeda, Masao; Maeda, Makoto; Ozu, Akira; Kureta, Masatoshi; Toh, Yosuke

no journal, , 

no abstracts in English

Oral presentation

Characterization study of candidate technologies for nuclear material quantification in fuel debris at Fukushima Daiichi Nuclear Power Station, 6; Study on inventory evaluation method of nuclear fuel material using detector responses

Okumura, Keisuke; Sato, Wakaei*; Nagatani, Taketeru; Komeda, Masao; Shiba, Tomooki; Nauchi, Yasushi*; Takada, Akira*

no journal, , 

In order to contribute to the development of quantitative technology for the nuclear fuel materials in the fuel debris at the Fukushima Daiichi Nuclear Power Station, we examined the evaluation method and prediction accuracy of the nuclear fuel material quantity in the fuel debris based on the detector responces of the non-destructive assay simulation and on the fuel burnup calculation results.

Oral presentation

Characterization study of candidate technologies for nuclear material quantification in fuel debris at Fukushima Daiichi Nuclear Power Station, 2-2; Passive neutron technique

Nomi, Takayoshi; Nagatani, Taketeru; Kosuge, Yoshihiro*; Shiromo, Hideo; Asano, Takashi

no journal, , 

no abstracts in English

Oral presentation

Characterization study of candidate technologies for nuclear material quantification in fuel debris at Fukushima Daiichi Nuclear Power Station, 2-1; General outline

Nagatani, Taketeru; Komeda, Masao; Shiba, Tomooki; Nauchi, Yasushi*; Sagara, Hiroshi*; Kosuge, Yoshihiro*; Miyaji, Noriko; Okumura, Keisuke

no journal, , 

no abstracts in English

Oral presentation

Study for nuclear material quantification in fuel deblis at Fukushima Daiichi Nuclear Power Station

Nomi, Takayoshi; Nagatani, Taketeru; Shiromo, Hideo; Asano, Takashi

no journal, , 

no abstracts in English

Oral presentation

Measurement test of non-destructive assay for quantification of nuclear materials in fuel debris, 1; Background and purpose

Okumura, Keisuke; Nauchi, Yasushi*; Suzuki, Risa; Nomi, Takayoshi; Shiba, Tomooki; Kaburagi, Masaaki; Takada, Akira*; Kosuge, Yoshihiro*; Nagatani, Taketeru

no journal, , 

no abstracts in English

Oral presentation

Measurement test of non-destructive assay for quantification of nuclear materials in fuel debris, 5; In-situ passive gamma-ray measurement for plutonium item using a CeBr$$_3$$ detector

Kaburagi, Masaaki; Shiba, Tomooki; Okumura, Keisuke; Nauchi, Yasushi*; Suzuki, Risa; Nomi, Takayoshi; Nagatani, Taketeru; Takada, Akira*; Kosuge, Yoshihiro*

no journal, , 

The passive gamma-ray spectroscopy for plutonium nuclear fuels was performed using a small volume CeBr$$_{3}$$ detector specific to high dose-rate measurements. This presentation reports that the wide energy range of gamma-ray spectra was obtained by the spectroscopy, and the energy range covered the principal gamma-decay lines of 59.5 keV emitted from $$^{241}$$Am and 2615 keV emitted from $$^{208}$$Tl, which is a descendant nuclide of $$^{236}$$Pu, comparing the measurements using HPGe.

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