Cathodic testing must be performed by ______.

• A. A plumber
• B. A building inspector
• C. A trained cathodic specialist
• D. A chemical handler

Answer: (C)

Cathodic testing verifies that a corrosion protection system is functioning by taking electrical potential readings with a reference electrode and comparing them to accepted protection criteria. This work requires knowledge of electrochemistry, proper test procedures, and the ability to interpret field readings to determine if the structure is adequately protected. Because precise measurements and correct interpretation are crucial for safety and effectiveness, it must be performed by a trained cathodic specialist. Other roles may have related knowledge, but they typically lack the specialized training and qualifications needed to conduct accurate testing and ensure proper protection levels.