Compositions – Radioactive compositions
Patent
1991-03-19
1992-06-30
Hunt, Brooks H.
Compositions
Radioactive compositions
423DIG20, 134 12, 134 2219, 134 42, 203 47, 570262, G21F 900
Patent
active
051260778
ABSTRACT:
A radioactive decontamination method for decontaminating a radioactive-contaminated object by using methylene chloride in place of conventionally used hydrocarbon fluoride or perchloroethylene. The radioactive-contaminated object is impacted by methylene chloride solution. Before the impacting, a preparatory step is executed as required in which radioactive contaminant, which is usually radioactive-contaminated epoxy-resin paint layer on a part used in a nuclear facility, is impregnated with methylene chloride solution so as to swell, thus facilitating exfoliation of the contaminant from the object. The methylene chloride solution is filtered and distilled so as to be decontaminated and subjected to a repeated use for impacting the radioactive-contaminated object. Methylene chloride solution exhibits much greater radioactive decontamination effect than solutions of conventional decontamination mediums such as hydrocarbon fluoride and perchloroethylene and is not so polluting as the known decontamination mediums. The decontamination of methylene chloride itself, which is effected through the distillation, can be executed with much smaller electrical power consumption as compared with the case where perchloroethylene is used.
REFERENCES:
patent: 2887393 (1959-05-01), Winkler et al.
patent: 3361649 (1968-01-01), Kouter
patent: 3716616 (1973-02-01), Lin
patent: 4235600 (1980-11-01), Capella et al.
patent: 4424079 (1984-01-01), Barabas
patent: 4521253 (1985-06-01), Barabas
patent: 4537666 (1985-08-01), Murray et al.
patent: 4579627 (1986-04-01), Brailsford
patent: 4592856 (1986-06-01), Kobayashi et al.
patent: 4630625 (1986-12-01), Capella et al.
patent: 4681705 (1987-07-01), Robertson
patent: 4753735 (1988-06-01), Figiel
patent: 4917807 (1990-04-01), Prisco, Jr. et al.
Doi Akira
Morikawa Kenji
Shimizu Yasuo
Tenjin Toshio
Hunt Brooks H.
Klima William L.
Mai Ngoclan T.
Morikawa Sangyo Kabushiki Kaisha
LandOfFree
Radioactive decontamination method using methylene chloride does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Radioactive decontamination method using methylene chloride, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radioactive decontamination method using methylene chloride will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1862053