California ICC UST Inspector Practice Exam

In what circumstance must a cathodic protection tester be certified?

1. Proven experience with aboveground tanks

2. Certification by local environmental authorities

3. Demonstrating knowledge of cathodic protection principles

4. Training by tank manufacturer

The correct answer is: Demonstrating knowledge of cathodic protection principles

A cathodic protection tester must be certified to demonstrate knowledge of cathodic protection principles because this knowledge is critical to ensuring that the protection system is properly assessed and functioning effectively. Cathodic protection is a method used to control the corrosion of a metal surface by making it the cathode of an electrochemical cell. It is essential for the longevity and integrity of underground storage tanks, as they are often susceptible to corrosion due to environmental factors. Certification typically involves understanding the specific mechanisms of cathodic protection, the correct measurement techniques, and the ability to interpret the data collected to ensure that the system is providing adequate protection. A tester lacking this foundational knowledge may inadvertently overlook critical issues, potentially leading to severe consequences such as tank failure, environmental contamination, or regulatory non-compliance. While the other options mention relevant aspects, such as experience or training, certification focused on knowledge of cathodic protection principles is paramount. This ensures that the tester is qualified to perform necessary evaluations and make informed decisions regarding the corrosion protection systems in place.