Cleaning and liquid contact with solids – Processes – For metallic – siliceous – or calcareous basework – including...
Patent
1984-09-27
1987-08-11
Corbin, Arthur L.
Cleaning and liquid contact with solids
Processes
For metallic, siliceous, or calcareous basework, including...
134 3, 134 41, 252404, 252626, G23G 100, G21F 900
Patent
active
046859713
ABSTRACT:
Disclosed is an improved process for oxidizing chromium in deposits in the cooling system of a nuclear reactor using a solution of ozone. The improvement consists of adding to the solution about 0.01 to about 0.5% of a water-soluble cerium IV compound, about 0.1 to about 0.5% of a water-soluble aromatic compound having at least one ketone group on an aromatic ring, or adding both. Also disclosed is the composition of water, ozone, the cerium IV compound and the aromatic compound. Also disclosed is a process for decontaminating the cooling system of nuclear reactors by adding a decontamination composition to the coolant, circulating the coolant between the cooling system and a cation exchange resin, removing the decontamination composition by passing it through an anion exchange resin, adjusting the temperature to 40.degree. to about 100.degree. C., adding the ozone oxidation composition, circulating the coolant through the cooling system, raising the temperature to at least about 100.degree. C., passing the coolant through an anion exchange resin or a mixed resin, adjusting the temperature to about 60.degree. to 100.degree. C. and repeating the addition of the decontamination composition and its removal.
REFERENCES:
Leich, "Oxidation of Cerium (III) by Ozone and by Electrolysis", BNWL-805, Battelle Memorial Institute, 1968.
Becker, Jr. Lawrence F.
Murray Alexander P.
Skriba Michael C.
Slater Clifton G.
Corbin Arthur L.
Fuerle R. D.
Westinghouse Electric Corp.
LandOfFree
Ozone oxidation of deposits in cooling systems of nuclear reacto does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ozone oxidation of deposits in cooling systems of nuclear reacto, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ozone oxidation of deposits in cooling systems of nuclear reacto will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-401193