Method for local cleaning of surfaces on a nuclear reactor which

Details Method for local cleaning of surfaces on a nuclear reactor which Method for local cleaning of surfaces on a nuclear reactor which

1985-06-19

1987-04-28

Kyle, Deborah L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

134 1, 376310, C25F 100

Patent

active

046612203

ABSTRACT:
During local cleaning of metallic surfaces (15, 24) on parts included in the primary circuit of a nuclear reactor, which surfaces are coated with corrosion products, in connection with inspection of the surfaces, the coated surface, while being located below the surface of the reactor water (13) in the reactor vessel (10) or reactor pool (12) of the nuclear reactor, is arranged in contact with an electrolytically permeable spacer (16) of an electrically insulating material which, at a distance from the coated surface, is arranged in contact with a body (170 of electrically conductive material. An electrolyte (21) is supplied to the spacer and an electrical potential difference is maintained between the coated metallic surface and the body of conductive material by connecting the surface to the positive pole (18) and the body to the negative pole (19) of a voltage source (20).

REFERENCES:
patent: 1369271 (1921-02-01), Edison

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