The protective coatings represent the system of protection against corrosion for metallic structures. The chosen mechanism can aisle the substrate to protect against environment avoiding the contact with oxygen, chemical salts, humidity (or condensation), pollutants and acid gases.
It is estimated that up to 75% of all premature failures in coatings are referable to an incorrect and inadequate surface preparation; therefore, a good surface preparation should be done to ensure coating quality.
A coating system traceability of application is done to determine the causes of failures or it could be determined if the design in the coating formulation is the adequate.