About the Design of the Cover :


The cover is intended to symbolize a hopeful future shining in the sky. The sky is clear blue, similar to the color of the JAEA logo. The white hexagons are arranged in a pattern similar to that in a tortoise shell, which symbolizes the wish of the people for long lives since ancient times in Japan. Coincidentally, this shape is the same as that of core fuel assemblies in both the prototype fast breeder reactor “MONJU” and the high temperature engineering test reactor “HTTR”.

The images on the cover show decontamination of pavement using shot blasting (top left) and decontamination of soil using a poly-ion complex (bottom right).

Shot blasting uses small iron balls (typically, around 1 mm in diameter) to remove a thin layer from a flat surface. We applied this process, which has been used in nuclear facilities, to pavement at Okuma town, and found that it could reduce the surface contaminant density by more than 90% (Topic 1-8, p.19).

Soil decontamination using a poly-ion complex was tested on a 1500 m2 recreation ground at a community center in Oguni, Ryozen, Date-city, Fukushima. The test removed 85∼90% of radioactive cesium by stripping 2 cm of surface soil from the ground (July, 2011) (Topic 1-10, p.21).

JAEA R&D Review 2012

JAEA R&D Review 2012
Editorial Board
Chief editor: Mikazu Yui
Vice editor: Keizo Itabashi

Takumi Nemoto, Akihiro Tagawa, Yoshio Suzuki, Masaru Watahiki, Kunio Onizawa, Naofumi Kozai, Takamasa Mori, Taiju Shibata, Hiroyuki Yamamoto, Shimpei Matsuhashi, Mitsuru Kikuchi, Kazunori Hirao, Yoshikazu Koma, Fumiaki Yamada, Naotaka Shigeta, Hideyuki Funabashi, Tetsuro Ishii, Yoshihisa Murokawa, Hiroshi Takada, Michihiro Naka, Masahiro Ishihara, Junsaku Nakajima, Kazumasa Narumi, Shinichiro Mikake, Hideaki Yoshida


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