Cathodic Protection (CP) is an electrochemical method used to prevent or control corrosion of metal structures buried in soil, immersed in water, and reinforcing steel inside concrete. It is one of the most effective corrosion control methods, and proper application can significantly extend the service life of a structure.
Pahvaz Company combines experienced specialists in corrosion science and cathodic protection with practical field expertise to provide engineering services in the following areas:
Cathodic protection controls corrosion by making the metal structure the cathode of an electrochemical circuit. Supplying the correct protective current reduces corrosion on pipelines, tank bottoms, marine structures, buried equipment, and reinforcing steel, helping extend the structure's service life.
A sacrificial anode system uses magnesium, zinc, or aluminum anodes without an external power source. An impressed current system uses a transformer rectifier and dedicated anodes to supply direct current. The appropriate method depends on structure size, electrolyte, soil or water resistivity, coating condition, current demand, and design life.
A reliable system begins with field data and protective-current calculations, followed by anode selection, equipment layout, installation, commissioning, and potential measurements. Periodic monitoring, clear records, and timely troubleshooting help maintain protection criteria and prevent under-protection or over-protection.
Since reliable CP performance depends on correct installation and commissioning, Pahvaz Company performs CP system installation for its projects with experienced specialists. In addition to installing and implementing CP systems, the execution unit provides:
