Epoxy Tank Coating On Chemical Tankers
NO EPOXY PAINT MANUFACTURER WILL EVER DECLARE IN WRITING HOW A LOT ACID PH VALUE THEIR PAINT CAN ENDURE. Phenolic resins are costly They can load solvents which cant be loaded in epoxy and polyurethane. Has higher resistance to acids than epoxy or polyurethane but has poor resistance to solvents and alkalies. To enhance the natural rubber life where only vapour contacts, they overcoat with chlorobutyl and tank metal coming in contact with daylight is coated silver.
Don't load any cargoes in epoxy tanks which aren't allowed by the paint manufacturer of your tank particular paint. Whereas a stainless steel tank or zinc tank after methanol discharge is prepared for next cargo. Bear in mind long run ventilation of empty tank at 30 deg C is required before DERUSTING water is introduced within the tank. When you ballast epoxy cargo tank the ballast water floor should be chased down using tank cleaning machines throughout the deballasting course of lest you get a stained /discoloured coating.