Question

What protects the underground pipe or tank from corrosion?

Answer 1

Corrosion:

• Corrosion is the process by which the surface of metal gets deteriorated by the coating of oxides or other salts of the metal.
• Corrosion is harmful to the metal as it leads to its decay.

Protection of underground pipe or tank from corrosion:

• The underground pipe or tank can be protected from corrosion by Cathodic protection.
• In this method, sacrificial anodes are attached to the pipeline's coated steel.
• As the sacrificial anodes are more electrically active than steel, the corrosive currents exit through the anode instead of steel. Thus, the metal is protected from corrosion.