Induced nuclear reactions: processes – systems – and elements – Fission reactor material treatment – Impurity removal
Reexamination Certificate
2005-12-06
2005-12-06
Silverman, Stanley S. (Department: 1754)
Induced nuclear reactions: processes, systems, and elements
Fission reactor material treatment
Impurity removal
C376S309000, C588S018000, C976SDIG037
Reexamination Certificate
active
06973154
ABSTRACT:
In a chemical decontamination method of chemically decontaminating radioactive nuclides from a metallic material, oxalic acid and hydrazine are injected as a reductive decontaminating agent into water that is in contact with the metallic material. Injection of the hydrazine is stopped after a cation resin arranged in a circulation line connected to the metallic material breaks, and at least the oxalic acid and the hydrazine in the reductive decontaminating agent are decomposed using a decomposing catalyst.
REFERENCES:
patent: 3873362 (1975-03-01), Mihram et al.
patent: 4162230 (1979-07-01), Horwitz et al.
patent: 4508641 (1985-04-01), Hanulik
patent: 4729855 (1988-03-01), Murray et al.
patent: 5434331 (1995-07-01), Barkatt et al.
patent: 5489735 (1996-02-01), D'Muhala et al.
patent: 5523513 (1996-06-01), Milner
patent: 5619545 (1997-04-01), Grummon et al.
patent: 5764717 (1998-06-01), Rootham
patent: 5805654 (1998-09-01), Wood et al.
patent: 6335475 (2002-01-01), Nagase et al.
patent: 6549603 (2003-04-01), Ishida et al.
patent: 57-9885 (1982-10-01), None
patent: 62-250189 (1987-10-01), None
patent: 63-253300 (1988-10-01), None
patent: 1-242792 (1989-09-01), None
patent: 3-10919 (1991-02-01), None
patent: 6-99193 (1994-04-01), None
patent: 9-113690 (1997-05-01), None
patent: 409174066 (1997-07-01), None
patent: 9-510784 (1997-10-01), None
patent: 10-123293 (1998-05-01), None
patent: 2000121791 (2000-04-01), None
“A Full System Decontamination of the Oskarshamn 1 BWR”, Proceedings of the International Conference, Apr. 27, 1994, pp. 203-210.
Anazawa Kazumi
Ishida Kazushige
Nagase Makoto
Nakamura Fumito
Tamagawa Tadashi
Hitachi , Ltd.
Kurita Engineering Co., Ltd.
Lish Peter J.
Mattingly ,Stanger ,Malur & Brundidge, P.C.
Silverman Stanley S.
LandOfFree
Method of chemical decontamination and system therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of chemical decontamination and system therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of chemical decontamination and system therefor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3485561