Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1981-05-28
1983-08-30
Tufariello, T. M.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204225, 204238, C25F 316, C25F 700
Patent
active
044015321
ABSTRACT:
Apparatus for removing radioactive contamination from metal objects is disclosed, consisting of three of three separate pieces. The first is an electro-polishing tank, pump and filter assembly, ventilation duct and filter assembly, and DC power supply. The second is a rinse tank and a pump and filter assembly therefor. The third is a divot crane. The electro-polishing tank assembly and the rinse tank assembly are each separately mounted on pallets to facilitate moving. The filter systems of the electro-polishing tank and the rinse tank are designed to remove the radioactive contamination from the fluids in those tanks. Heavy items or highly contaminated items are handled with the divot crane constructed of stainless steel. The electro-polishing tank and the rinse tank are also made of stainless steel. The ventilation system on the electro-polishing tank exhausts acid fumes resulting from the tank heaters and the electro-polishing process. Inside the electro-polishing tank are two swinging arms that carry two stainless steel probes that hang down in the electrolyte fluid. These are negative DC probes and are electrically isolated from the tank and the rest of the system. Across the top center of the tank is a copper pipe, which is also electrically isolated from the tank. This is the positive side of the DC system. To decontaminate a metal object, it is suspended from the positive copper pipe, with good electrical contact, into the electrolyte fluid. The negative probes are then moved on their swinging arms to a close proximity to the object being decontaminated, without making contact.
REFERENCES:
patent: 2665247 (1954-01-01), Jumer
patent: 3320175 (1967-05-01), Podberesky
patent: 3515655 (1970-06-01), Raviv
patent: 3657012 (1972-04-01), Verot
patent: 3873362 (1975-03-01), Mihram
patent: 4063962 (1977-12-01), Arya
patent: 4193853 (1980-03-01), Childs
patent: 4318786 (1982-03-01), Tahoda
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