California ICC UST Inspector Practice Exam

Which of the following labels is NOT required on the exterior surface of an underground storage tank?

1. Nominal Capacity in gallons

2. Maximum operating temperature in degrees Fahrenheit

3. Usable capacity in gallons

4. City and State of manufacture

The correct answer is: City and State of manufacture

The label that is not required on the exterior surface of an underground storage tank is the one indicating the city and state of manufacture. While it’s vital for tanks to have labels that provide essential information for safe operation and regulatory compliance, such as nominal capacity in gallons, maximum operating temperature, and usable capacity, manufacturers are not mandated to indicate the specific city and state where the tank was manufactured. The inclusion of this information on storage tanks primarily serves practical purposes relating to safety, operational guidelines, and environmental regulation. For instance, knowing the nominal and usable capacities helps in understanding how much product can be stored safely within the tank, while the maximum operating temperature is critical to preventing thermal expansion and ensuring the tank operates within safe limits. Thus, city and state information is not essential for the tanks' operation or safety in the way that the other labels are.