Impressed Current Cathodic Protection Diagram

It would be 100 years after davy s experiment before cathodic protection was used widely on oil pipelines in the united states 5 cathodic protection was applied to steel gas pipelines beginning in 1928 6 and more.

Impressed current cathodic protection diagram. Impressed current cathodic protection system design impressed current cathodic protection systems iccp are used to provide cathodic protection for pipelines ship hulls offshore production platforms water and wastewater treatment equipment tank farm and of course underground storage tanks. Thomas edison experimented with impressed current cathodic protection on ships in 1890 but was unsuccessful due to the lack of a suitable current source and anode materials. April 21 2015 marine study. Adhere to ufc 1 300 02 unified facilities guide specifications ufgs format standard when editing.

Impressed current cathodic protection. A source of dc current is installed in the system which forces the current flow from an installed anode to the pipe or structural material making it a cathode. Cathodic protection by impressed current 04 06 note. This guide specification covers the requirements for underground piping and buried or submerged structure cathodic protection systems using impressed current systems.

Lets discuss how the operation of impressed current cathodic protection is carried out practically with equipments. The power to the unit is fed from the 440v ac 60 hz 3 phase supply. How does an iccp system work. The external power source often a dc power supply provides the current necessary to drive the electrochemical reaction required for cathodic protection to occur.

However it can be modified to 220 v also as per requirement. This makes it possible to protect virtually any structure regardless of size or current requirements using long life anodes and enough appropriately sized power supplies. Schematic diagram showing the set up of impressed current cathodic protection iccp system steel in concrete is protected against corrosion by a passivating gamma ferric oxide film which forms on the steel surface because of the highly alkaline environment produced by cement hydration. Dc source can be a solar cell rectifier generator battery or some other dc power.

Impressed current cathodic protection system design iccp 1. Impressed current cathodic protection systems have the benefit of using an external power supply to drive current. Impressed current cathodic protection systems are preferred by ship owners because they reduce fuel cost and maintenance. Impressed current cathodic protection iccp system.