C - Chemistry – Metallurgy – 23 – G
Patent
C - Chemistry, Metallurgy
23
G
C23G 5/032 (2006.01) G21F 9/28 (2006.01) G21F 9/30 (2006.01) G21F 9/34 (2006.01)
Patent
CA 2207480
An improved process for the chemical decontamination of large volume (small surface to volume ratios) components contaminated with uranium. Chemical cleaning solvent made up from a unique combination of a chelating agent, ammonium carbonate, ammonium hydroxide, and hydrogen peroxide is applied in a foam state. The application temperature ranges up to 150°F, but is particularly effective at room temperatures. A surfactant added to the solution acts as a foaming agent. The prepared solution is foamed and transferred into the component so that foam fills all voids in the component. As the foam condenses, the solvent wets the surfaces and dissolves the uranium. Condensed foam is collected and returned to the foam generator for reuse.
Un procédé amélioré pour la décontamination d'un important volume (petite surface en proportion du volume) d'éléments contaminés à l'uranium. La solution chimique de nettoyage, composée d'une combinaison unique d'agent chélateur, de carbonate d'ammoniaque, d'hydroxide d'ammoniaque et de peroxyde d'hydrogène, est appliquée sous forme de mousse. La température d'application atteint jusqu'à 150 degrés F, mais elle est particulièrement efficace à la température de la pièce. Un surfactant, ajouté à la solution, agit en tant qu'agent mousseux. La solution préparée est tournée en mousse et transférée dans l'élément pour que la mousse remplisse tous les espaces vides de l'élément. mesure que la mousse se condense, le solvant mouille les surfaces et dissout l'uranium. La mousse condensée est recueillie et retournée au générateur de mousse pour utilisation ultérieure.
Jevec John M.
Lenore Carl John
Babcock & Wilcox Company The
Ridout & Maybee Llp
LandOfFree
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