Doryokuro Kakunenryo Kaihatsu Jigyodan

Kabushiki Kaisha Kobe Seiko Sho

Eiichi Inada

Katsuyuki Ohtsuka

Fumiaki Komatsu

Yoshihisa Sawada

Kazuo Kitagawa

Hideaki Aikawa

Masao Shiatsuki

Takayoshi Masaki

Makoto Kanai

A process for compacting radioactive waste by precompressing the waste in each of capsules while filling the waste into the capsule to thereby compress the waste to the desired bulk/true density ratio under a small total pressing load and diminish damage to the inner surface of the die used, each of the capsules having a cross sectional form corresponding to a divided segment of the cross section of an HIP treatment container, then placing the capsules into the HIP treatment container, subsequently filling the HIP treatment container with a metal powder as a filler, thereafter degassing and sealing the HIP treatment container and subjecting the container to an HIP treatment in its entirety. The process precludes scattering of the radioactive substance from the waste and release of waste fragments to assure improved safety.

Process for compacting radioactive metal wastes

A process for the treatment of radioactive sodium is provided which comprises the steps of forming radioactive sodium amalgam by mixing radioactive sodium with mercury; reacting the radioactive sodium amalgam with water to form mercury and radioactive sodium hydroxide; recycling the mercury into the step of forming radioactive sodium amalgam to be mixed with the radioactive sodium; and solidifying the radioactive sodium hydroxide in the presence of a solidifying material to be confined in a stable solidified body.

Process for the treatment of radioactive sodium

Growing community of inventors

Ibaraki, Japan

Eiichi Inada