Enhancement of the methodology of repository design and post-closure performance assessment for preliminary investigation stage, 3; Progress report on NUMO-JAEA collaborative research in FY2013 (Joint research)

Shibata, Masahiro; Sawada, Atsushi; Tachi, Yukio; Makino, Hitoshi; Wakasugi, Keiichiro; Mitsui, Seiichiro; Kitamura, Akira; Yoshikawa, Hideki; Oda, Chie; Ishidera, Takamitsu; et al.

JAEA-Research 2014-030, 457 Pages, 2015/03

JAEA-Research-2014-030.pdf:199.23MB

JAEA and NUMO have conducted a collaborative research work which is designed to enhance the methodology of repository design and post-closure performance assessment in preliminary investigation stage. With regard to (1) study on rock suitability in terms of hydrology, based on some examples of developing method of hydro-geological structure model, acquired knowledge are arranged using the tree diagram, and model uncertainty and its influence on the evaluation items were discussed. With regard to (2) study on scenario development, the developed approach for "defining conditions" has been reevaluated and improved from practical viewpoints. In addition, the uncertainty evaluation for the effect of use of cementitious material, as well as glass dissolution model, was conducted with analytical evaluation. With regard to (3) study on setting radionuclide migration parameters, based on survey of precedent procedures, multiple-approach for distribution coefficient of rocks was established, and the adequacy of the approach was confirmed though its application to sedimentary rock and granitic rock. Besides, an approach for solubility setting was developed including the procedure of selection of solubility limiting solid phase. The adequacy of the approach was confirmed though its application to key radionuclides.

Microbeam irradiation facilities for radiobiology in Japan and China

Kobayashi, Yasuhiko; Funayama, Tomoo; Hamada, Nobuyuki*; Sakashita, Tetsuya; Konishi, Teruaki*; Imaseki, Hitoshi*; Yasuda, Keisuke*; Hatashita, Masanori*; Takagi, Keiichi*; Hatori, Satoshi*; et al.

Journal of Radiation Research, 50(Suppl.A), p.A29 - A47, 2009/03

https://doi.org/10.1269/jrr.09009S

Study of epigenetically transgenerational changes induced at large deletion site in genome by ionizing irradiation

Yokoya, Akinari; Suzuki, Keiji*

no journal, , 

no abstracts in English

Radiation effect on mitochondria induced by X-ray microbeam exposures to cell nucleus and cytoplasm

Kanari, Yukiko; Kaminaga, Kiichi; Narita, Ayumi; Usami, Noriko*; Suzuki, Keiji*; Yokoya, Akinari

no journal, , 

no abstracts in English

Autophagy activated by Auger effect induced by soft X-ray microbeam

Noguchi, Miho; Yokoya, Akinari; Kaminaga, Kiichi; Fujii, Kentaro; Suzuki, Keiji*; Usami, Noriko*

no journal, , 

Live cell imaging study on biological effects induced by X-ray microbeam irradiation

Kaminaga, Kiichi; Kanari, Yukiko*; Sakamoto, Yuka*; Noguchi, Miho; Narita, Ayumi*; Fujii, Kentaro; Usami, Noriko*; Kobayashi, Katsumi*; Suzuki, Keiji*; Yokoya, Akinari

no journal, , 

Deployment of sensing technologies to promote human resource development in Naraha Remote Technology Development Center of JAEA

Nishimura, Akihiko; Shibata, Takuya; Yamada, Tomonori; Suzuki, Hiroshi*; Shimada, Kozue; Sato, Yuki; Torii, Tatsuo; Koyama, Shinichi

no journal, , 

In August 2015, we ran an educational program about laser technologies in Tsuruga district of Fukui prefecture and did the other about robot technologies in Tokai of Ibaraki separately. After the establishment of the Naraha remote Technology Development Center, a more advanced educational program was arranged in September 2016. It was a 10 days internship program where we focused the sensing techniques with robotic technologies. We are fighting the problems to break through the present miserable situation of Fukushima Daiichi NPPS. Countermeasure technique against water leakage for the suppression chamber is most needed. As a means of eventually sealing down, UV activating polymerization is under testing. Remote sensing for the pedestal concrete strength is also indispensable. Laser ablation technique for ICP-MS is now under preparation. And the facility has been opened for user's R&D at a low price.