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Ballast Tank Descaling

Magnesium Anodes for Ballast Tanks

Descaling ballast tanks with wire anodes provides shipowners and managers with a cost-effective solution to what might otherwise be a labor intensive operation.

Ballast Tank Descaling with wire anodes

The procedure of descaling ballast tanks using anodes provides an efficient solution for tackling corrosion scales

Magnesium's specific alloy properties make it the perfect tool for handling corrosion residues in ballast tanks. Instead of spending dozens of hours on blasting and cleaning, magnesium anodes can do the job on their own
Ballast Tank Descaling – Magnesium anode for Descaling

Ballast Tank Descaling - Procedure

Each material has its advantages and disadvantages and must be evaluated on a case-by-case basis. When sacrificial anodes are used to protect ships, barges, or other structures in water, several factors need to be taken into consideration.

This is how it works

  • Connecting the wire anode to the ballast tank walls will create a big potential difference and create a high driving voltage
  • The potential difference that occur, will make the scales and most corrosion products fall off. Any loose paint or soft coatings will also be loosened if not adhered to the steel works.
  • Let the wire anodes be attached to the steel work for at least: 10 days with higher salinity and 14 days if lower. It is very important that you keep your ballast to the highest levels to ensure a proper result.
  • When complete, detach the anodes and keep until next time. Change when there is less than 50 % left.
  • When all the anodes are removed, the descaling operation has been completed. Now, all the loose scale on the bottom of the tank must be removed. After completed process, the tank should be ready for coating and installation of a suitable cathodic protection system.

Benefits when descaling with wire anodes

  • No labour intense process of descaling with staging or shot blasting equipment.
  • Easy material to work with, light in weight.
  • Less hours needed; this means lower costs.

SAFETY NOTE

Please be advised

Special safety percussions need to be taken when descaling with wire anodes, please contact us for more information.
As a rule of thumb, about one metre of wire anode will be required for each three sqm of surface within the tank.
We Offer: Consultation, Projecting, Installation, Maintenance and Worldwide Cathodic Protection Material Shipping.
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We are one of Scandinavia's leading suppliers of cathodic protection since 1989. Our headquarters are located in Ramlösa, Helsingborg, in southern Sweden.

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