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08058 Prevention of External (Soil Side) Corrosion on Storage Tank Bottom Plates by Cathodic Protection System

Picture for 08058 Prevention of External (Soil Side) Corrosion on Storage Tank Bottom Plates by Cathodic Protect
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Product Number: 51300-08058-SG
ISBN: 08058 2008 CP
Author: Bipradas Chatterjee
Publication Date: 2008
$0.00
$20.00
$20.00
Innumerable above ground storage tanks in hydrocarbon process plants, which are located in aggressive soil at coastal areas, are at a risk from bottom plate corrosion, due to formation of a galvanic corrosion cell between the tank bottom plate and the soil. This galvanic corrosion cell formation effect is more predominant if the content of the tank is stored at a high temperature. At such situations traditional methods of passive barrier protection systems such as Sand-bitumen tank foundation pad or soil side Paint/coating of the bottom plates cannot prevent corrosion. Tank leakage due to corrosion poses significant threat for the safety of the plant equipments and personnel due to possibility of occurrence of the fire hazards, if the tank content is hazardous material. The replacement of bottom plate due to corrosion damage is also found to be costly. Suitably designed Cathodic Protection system using either close or remote anode ground bed supplemented with soil side Paint/coating of bottom plate is the appropriate protective measure to ensure the integrity of the tank bottom plates against soil side corrosion for a longer period.
Innumerable above ground storage tanks in hydrocarbon process plants, which are located in aggressive soil at coastal areas, are at a risk from bottom plate corrosion, due to formation of a galvanic corrosion cell between the tank bottom plate and the soil. This galvanic corrosion cell formation effect is more predominant if the content of the tank is stored at a high temperature. At such situations traditional methods of passive barrier protection systems such as Sand-bitumen tank foundation pad or soil side Paint/coating of the bottom plates cannot prevent corrosion. Tank leakage due to corrosion poses significant threat for the safety of the plant equipments and personnel due to possibility of occurrence of the fire hazards, if the tank content is hazardous material. The replacement of bottom plate due to corrosion damage is also found to be costly. Suitably designed Cathodic Protection system using either close or remote anode ground bed supplemented with soil side Paint/coating of bottom plate is the appropriate protective measure to ensure the integrity of the tank bottom plates against soil side corrosion for a longer period.
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