McCORR Cathodic Protection Engineering began operating in May 2017. It aims is to provide sound unbiased advice and cost-effective corrosion mitigation using Cathodic Protection.
Its principle has over 25 years’ experience in corrosion control specialising in cathodic protection in the Mining, Oil, Gas, Water and Marine industries.
With qualifications and membership with the Australasian Corrosion Association and NACE, the company and its principle are committed to staying abreast of advances in corrosion control and mitigation.
Cathodic Protection controls corrosion by supplying low voltage DC current from buried or immersed anodes through the ground or water onto the structure to be protected. This allows the structure to be protected to become more electro-negative.
If the potentials of the protected structure meet the requirements set out in the AS2832 suite of standards, then corrosion is neutralised.
Cathodic Protection (CP) systems can cause interference on buried or immersed metallic structures in the vicinity of the CP system. Such “foreign structures” may include metallic pipelines (such as water, gas or other), metal sheathed cables, electricity/communications earths or any other underground metal structure. Interference from a cathodic protection system is caused by the pickup and discharging of DC current on the foreign structure. If the interference is adverse, it can cause corrosion to the foreign structure.
For allowable levels of interference, refer to the regulations applicable to the Australian state where the CP system is installed.