What is the purpose of a cathodic test?

The purpose of a cathodic test is to assess corrosion protection. This test is essential in ensuring that metal structures, particularly those buried or immersed in conductive environments (like pipelines and storage tanks), are effectively protected from corrosion.

Corrosion can significantly compromise the integrity and safety of fuel storage systems, leading to leaks and failures. A cathodic protection system involves using sacrificial anodes or impressed current systems to mitigate corrosion by providing a protective electrical charge to the metal surface.

Conducting a cathodic test helps determine whether the protection measures in place are functioning properly. The results can indicate whether a structure is adequately protected against corrosion or if adjustments are needed to maintain its integrity over time.

Other options, such as measuring pipeline pressure, evaluating tank capacity, or testing for leaks, do not relate to the specific assessment of corrosion protection, which is the focal point of a cathodic test.