Chemistry: electrical and wave energy – Processes and products
Patent
1990-05-24
1992-04-07
Niebling, John
Chemistry: electrical and wave energy
Processes and products
204104, 204130, 134 1, 134 3, 156627, C25B 100, C23G 108
Patent
active
051025116
ABSTRACT:
This invention relates to a chemical method of effectively decontaminating metallic wastes that have been contaminated by radioactive substances and which have resulted from the demolition of nuclear power plants or reactors in operation. The method is that when the increase in the amount of dissolution of metal ions from the wastes causes the potential of the aqueous sulfuric acid to increase beyond a certain level, the dissolved metal ions are reduced electrolytically to control the potential of said aqueous sulfuric acid to become lower than said certain level.
REFERENCES:
patent: 3873362 (1975-03-01), Mihram et al.
patent: 4410498 (1983-10-01), Hatch et al.
patent: 4670234 (1987-06-01), Holter et al.
T. Suwa, Crud in Nuclear Power Plants, Corrosion Engineering, 37, 405-408 (1988).
R. F. S. Robertson, Chalk River Experience in `Crud` Deposition Problems, Atomic Energy of Canada Limited, Aug. 15, 1961 (Partial), pp. 1 & 2.
Babcook & Wilcox Company, Plant Decontamination Methods Review, Electric Power Research Institute, May 1981, pp. ix, S-1-S-2, 3-1-3-3.
Metal Finishing Handbook, Jan. 1989, p. 159.
Kuribayashi Nobuhide
Suwa Takeshi
Yasumune Taketoshi
Japan Atomic Energy Research Institute
Niebling John
Ryser David G.
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