 Surface Preparation Results
The Electroline descaling process is specifically designed to
prepare medium-to-heavily scaled tank surfaces for soft coatings,
fluid films, bio-gels, cleaner cargoes and more accurate tank
inspections. Hard, tightly-adhering scale requires slightly more Electroline
material to achieve the same result normally obtained with
loose-to-moderately adhering scale. Electroline does not attain
near-white metal. It is designed to obtain the cleanest condition
possible within reasonable limits. Sandblasting and power washing are
suggested as a complement to Electroline for very heavily-scaled tanks
or tanks in unusually poor condition. All coatings adhere better
when water, salt, oil, dirt, loose rust and rust scale are removed.
The objective of Electroline is to eliminate the primary obstacle
to good adhesion: scale. Once the scale is removed, the tank surfaces
can be more easily and less expensively sandblasted in preparation for
a sophisticated hard coating.
Soft coatings will require high-pressure (100 psi) washing from a
standard 1¾" fire hose to remove calcareous
deposits. The deposits are more easily removed if washed
immediately after de-ballasting. Following the application of a
fresh tank coating, Wilson Walton recommends the installation of
sacrificial cathodic protection using
Aloline high yield aluminum alloy anodes or
Zincoline high purity zinc anodes as a
supplemental barrier to corrosion in the event of coating loss or
breakdown. Next: Calcareous Deposits
Previous: Installation Procedure
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