Ballast Tank Corrosion Inhibitor
Ballast tank use started in the early 1700′s and the advantages of being able to control the stability of a marine vessel by filling ballast tanks with water over traditional ballast methods meant that the use of ballast tanks was soon adopted by most ship builders, but while some early ballast tanks were made of non corrosive materials which on the face of it seemed a great solution as they were both light and relatively easy to empty, it soon became clear, where these early ballast tanks where continually used they proved to be unreliable. Ballast tanks are usually made of steel today and are proven to be a very reliable form of ballasting but they do have one draw back that plagues all ships and that is corrosion from being filled with seawater, the solution is to treat the ballast tank water with an inhibitor that stops rust, early attempts at producing inhibitors improved the life of ballast tanks but not by much in the grand scheme of things, we have two products that will extend the life of a ballast tank, the first is a highly effective Inhibitor that is added to the ballast water and the other is Aquasteel which is used to protect normally dry area’s of the ballast tank, both have proven to extend the life of ballast tanks by years.
Ballast Tank Corrosion Inhibitor
Ballast Tank Corrosion Inhibitor is a liquid, film-forming inhibitor. Ballast Tank Corrosion Inhibitor is a blend of organic and inorganic inhibitors. It contains no chromates and is completely soluble in seawater. It forms a tightly bonded protective film on metal surfaces, which reduces pitting and general corrosion.The film is easily maintained and can be quickly reinforced by subsequent additions of treatment where a decline in continuing effectiveness is detected. Ballast Tank Corrosion Inhibitor provides economical means of corrosion inhibition in ballast tanks, bilges, voids, cofferdams and barges. It will also provide effective inhibition of sulphate and carbonate scales.Ballast Tank Corrosion Inhibitor can be used where sacrificial anodes are in use.Treatment with Ballast Tank Corrosion Inhibitor can be expected to improve the effectiveness of the cathodic protection by enlarging the area protected and to extend the life of the anodes. The cost of the treatment is offset by the reduced costs of anode replacement.
Effective for use in:
ballast tanks, cofferdams, barges and voids.
Forms tightly bonded protective film:
on all metal surfaces below water level.
Protective film is stable over:
a wide pH and temperature range.
Ideally suited for ballast and other tanks:
protection during ship lay-up periods.
Can be fed neat from the drum. Feeding equipment for the concentrated product should be of stainless steel or plastic. Ideally the product is best fed continuously to the water used to fill the tank or system. Where the system to be treated is already full and draining and refilling is impractical, distribution of the Ballast Tank Corrosion Inhibitor treatment in an open vessel can be achieved by air-agitation or pump circulation. Ballast Tank Corrosion Inhibitor is recommended for systems in which dissolved oxygen is present and the use of air to encourage mixing will not impair corrosion protection.
The recommended initial dosage of Ballast Tank Corrosion Inhibitor is 1% (1 Ltr. per tonne of fresh seawater/ballast water). Where there is large amounts of accumulated microbial growth this should ideally be cleaned out first, or treated using Biological Growth Controller or alternatively the tank can be treated with BallastTank Corrosion Inhibitor @ 6% or 6 litres per tonne of ballast water. Where the ballast tank is uncoated and dry Aquasteel may be used to pre-treat the ballast tank.