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The Next Generation of Double Bottom Tank Cathodic Protection

Picture for The Next Generation of Double Bottom Tank Cathodic Protection
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A new and innovative method has been developed to allow for cathodic protection of the upper / new tank bottom in a double bottom tank. When two steel tank bottoms are in electrical contact with each other the lower tank bottom acts as an electrical shield to cathodic protection (CP) current external from the tank. By electrically isolating the new / upper tank bottom from the old tank bottom and old dead shell CP current can then flow right through the old tank bottom to cathodically protect the upper / new tank bottom. The old tank bottom and dead shell become essentially transparent. Non-conductive type release prevention membranes were required to be used in the past between the old tank bottom and upper / new tank bottom to prevent the galvanic affects of new steel / old steel corrosion. A conductive type of release prevention barrier can now be utuilized to provide leak prevention without the concern of new steel /old steel galvanic corrosion occuring between the two tank bottoms. Significant advantages occur by electrically isolating the upper / new tank bottom away from the old tank bottom and dead shell of which the most significant is that CP current can always pass through the old tank bottom eliminating the problems and concerns of consumed CP systems between the tank bottoms. Cathodic Protection data from two tanks incorporating this new and innovative method will be discussed.

Product Number: 51319-12924-SG
Author: Lou Koszewski
Publication Date: 2019
$0.00
$20.00
$20.00
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