The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 26, 2005
Filed:
Dec. 04, 2001
Makoto Nagase, Mito, JP;
Naohito Uetake, Hitachinaka, JP;
Kazushige Ishida, Hitachi, JP;
Fumito Nakamura, Mito, JP;
Kazumi Anazawa, Hitachi, JP;
Tadashi Tamagawa, Ebina, JP;
Hiroo Yoshikawa, Sakai, JP;
Makoto Nagase, Mito, JP;
Naohito Uetake, Hitachinaka, JP;
Kazushige Ishida, Hitachi, JP;
Fumito Nakamura, Mito, JP;
Kazumi Anazawa, Hitachi, JP;
Tadashi Tamagawa, Ebina, JP;
Hiroo Yoshikawa, Sakai, JP;
Hitachi, Ltd., Tokyo, JP;
Kurita Engineering Co., Ltd., Osaka, JP;
Abstract
In a chemical decontamination apparatus, a catalyst decomposition column in an upstream side of an ion exchange resin column and a hydrogen peroxide injection apparatus in a further upstream side, reduce the amount of waste products caused by a chemical decontaminating agent where a mixed decontaminating agent for a composition trapped in a cation resin column and for a composition trapped in an anion exchange resin are used for the chemical decontaminating agent, selectively decompose the composition trapped in the cation resin column in an inlet side of a cleaning apparatus when radioactive nuclides in the decontaminating agent are cleansed using the cation resin column during decontamination, and decompose both compositions after completion of the decontamination. The chemical decontamination thus selectively decomposes the chemical decontaminating agent, which is a component of the load to the cation resin column.