Cathodic protection systems is to protect a wide range of metallic structures in various environments. Common applications or environment to protect is steel, water or fuel pipelines and steel storage tanks such huge oil tanks, chemical storage tanks, steel pier piles, ship and boat hulls, offshore oil platforms and onshore oil well casings and metal reinforcement bars in concrete buildings and structures.
Galvanic or sacrificial anodes are made in various shapes and sizes using alloys of zinc, magnesium and aluminum. In order for galvanic cathodic protection to work, the anode must possess a lower (that is, more negative) electrode potential than that of the cathode (the target structure to be protected).
Some old days or still some of them used galvanic anodes to protect the cathode which will be replaceable in a year.
Nowadays Impressed current cathodic protection (ICCP) systems are used to avoid replacing the cathode in years together. These consist of anodes connected to a DC power source, often a transformer-rectifier connected to AC power. In the absence of an AC supply, alternative power sources may be used, such as solar panels, wind power or gas powered thermoelectric generators in accordance with the CP designer.
Tiaano is the leaders to supply different type of cathodic protection anodes over 63 countries especially for power plants in mass supply and still doing well with increasing year to year.