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cathodic protection

   Also found in: Dictionary/thesaurus, Acronyms, Wikipedia 0.01 sec.
cathodic protection [kə′thäd·ik prə′tek·shən]
(metallurgy)
Protecting a metal from electrochemical corrosion by using it as the cathode of a cell with a sacrificial anode. Also known as electrolytic protection.

cathodic protection, electrolytic protection
A method of protecting a ferrous metal structure, which is embedded in water or moist soil, from corrosion due to galvanic action; usually by attaching it to a metal rod which is more electronegative than the structure, or by counteracting the current which is the source of corrosion by another one (in the opposite direction) which just balances it.


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A spokeswoman for the city council's highways department said: "Recent inspections and assessments have identified the need for protection works to the joints and supports of Lancaster flyover, including water-proofing, cathodic protection (corrosion prevention) and replacement of carriageway movement joints.
The facility features tools such as cathodic protection test field with buried, electrified pipelines; a coatings lab with a flash and spray booth; a virtual spray booth for classroom-based applicator training; an equipment preparation area; and the nation's only marine ballast tank immersion tent, which simulates a ship's ballast tank for shipboard corrosion assessment training.
BAC Corrosion Control Ltd (BAC) provides with the insurance against these costs by designing, supplying, installing, setting to work and maintaining cost effective, efficient cathodic protection systems that will mitigate corrosion, says the company.
 
 
 
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