How to Clean SHIP TANK after discharging of caustic based cargo?
For a cargo tank / ship tank cleaning agent, Metal Rust Cleaner ( RXSOL-16-1011-210 ) can be used at the concentration of 5% to remove the stains after the cargo contains caustic based products.
Dilutions must be made in a plastic container. The acid should always be added to water, never the reverse.
Procedure for Use:-RXSOL-16-1011-210 Metal Rust Cleaner is highly concentrated for OPTIMUM RUST STAIN BRITE result.
Dilute in water (always use plastic jar and RXSOL-16-1011-210 should be added to water never add water to RXSOL-16-1011-210.)
Surface should be sound clean and free from oil, grease, dirt etc. If necessory use RXSOL DEGREASER to clean oil grease from the surface.
Before Application degrease and remove oily painted area, Then apply Metal Rust Cleaner ( RXSOL-16-1011-210 ) on the metal surface to get complete reaction of rust particle with Metal Clean Bright till full dry the surface area. Repeat the Metal Clean Bright 2nd times to get complete reaction of rusted surface. This will also helpfull to get solid chemically treated base for NEW PAINT COATING.
CONCENTRATION of Metal Clean Bright : 10 to 40% for removal of light rust stain, while direct and neat Metals Rust stain Brites Cleaner required to dissolved heavy rusted stains.
Diluted materials apply on rusted area for 15 to 20 minutes then wash off with water repeat if necessary. (For stubborn rusted stains.)
Spraying Direction: – Using an empty / clean 210 liter drum, fill with 190 liter of fresh water and add 20 liters of Metals Rust stain Brites Cleaner This makes a 10% solution, which can be sprayed onto areas in coated tanks where rust stains are showing and over actual rusted areas. Once spraying is completed, wait 20-30 minutes and fresh water rinse with lots of water, if possible use butterworth machines for a more efficient result. This method can be used in stainless tanks to “freshen up” the look of the stainless materials. Make sure to rinse the tank very well, as residual detergent within the Metals Rust stain Brites Cleaner will show up in a Wall Wash.
Injection– Not suitable.
Re-circulation: – When hand spraying is inadequate (too much area to cover), prepare a 2% - 5% solution in the tank using fresh water, heat solution to 50o C, then circulate the solution through butterworth machines for 3 x 45 minutes drops minimum. When using fixed machine recirculate for a minimum of 3 cycles. Rinse out the tank using hot seawater 85o C for 2 hours making sure that there is no form remaining in the water at the pumpstack drain cock. After the hot wash, the tank must be rinsed with fresh water and dried.
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