Standardization in the field of external and internal cathodic protection of buried or immersed structures of metallic materials (e.g. pipes for the transport of gas, water and fuels; off-shore constructions; ships; fuel storage tanks; telecommunications and electric cables etc). reinforced concrete buildings, structures, foundations, pipelines ect). The influence of coatings and/or stray currents (AC and DC) on the performance of cathodic protection systems. The anodic protection of internal surfaces of structural components. Standardization of a framework for a system and related procedures for the definition and verification of the competence level of operators in the field of cathodic protection.