Hitachi, Ltd.

Itaru Komori

Takashi Nishi

Masami Matsuda

Tsutomu Baba

Makoto Kikuchi

Katsumi Ohsumi

Kiyomi Funabashi

Koichi Chino

Shunsuke Uchida

Hideo Yusa

Tomohiro Sato

Takashi Ikeda

Tetsuro Adachi

According to the present invention, a fibrous material having a property to adsorb radioactive nuclides in the form of ion or molecule onto its surface is added to a cement type hydraulic solidifying material used for a solidifying material, a waste container, a structure in disposal site and a back-filling material used for production of a waste form of radioactive wastes, whereby improvement of long-term endurance of the waste form, the structure and the like and diminishment of leaching of radioactivity from the waste form and the like can be simultaneously attained.

Solidifying materials for radioactive waste disposal, structures made of

A process and an apparatus for cleaning nuclear reactor cooling water with cation exchange resin whose ion-exchanging groups have a bonding energy of not more than 300 KJ/mole are disclosed, whereby the radiation exposure of operators in an atomic power plant can be considerably reduced, and the waste ion exchange resin can be readily disposed.

Process and apparatus for cleaning nuclear reactor cooling water

Growing community of inventors

Katsuta, Japan

Itaru Komori