Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1991-06-04
1995-05-16
Tung, T.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204147, 204197, C23F 1300
Patent
active
054157455
ABSTRACT:
A method of providing cathodic protection to underground metallic structures which comprises creating an excavation spaced from the underground metallic structure and placing in the excavation a hollow casing having a perforate section, the hollow casing being adapted to hold therein a galvanic anode. The method further comprises establishing an electrical connection between the galvanic anode and the underground metallic structure, placing the galvanic anode in the hollow casing and then filling the excavation and the hollow casing with a filler material. The apparatus of the invention comprises a hollow rigid casing adapted to contain at least one galvanic anode, the casing having a perforate section such that electric current from the galvanic anode can flow out of the casing towards the underground metallic structure. A related method of replacing galvanic anodes is also provided.
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Fanciullacci Daniel A.
May Wayne J.
Pultan John M.
Corrotech, Inc.
Radack David V.
Silverman Arnold B.
Tung T.
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