TCFP Plans Examiner Practice Test

What is the minimum distance required between tanks containing liquids classified as Class I, Class II, or Class III A?

1. 1/4 the sum of their diameters

2. 1/8 the sum of their diameters

3. 1/6 the sum of their diameters

4. 1/2 the sum of their diameters

The correct answer is: 1/6 the sum of their diameters

The minimum distance required between tanks containing liquids classified as Class I, Class II, or Class III A is based on safety regulations designed to prevent potential incidents such as leaks or fires. Specifically, the correct answer reflects recognized standards that facilitate adequate spacing to mitigate risks associated with these types of liquids. In this case, the requirement of one-sixth of the sum of their diameters is grounded in fire safety codes that consider factors like vapor pressure, flash points, and the potential for incidents that could lead to dangerous situations. This distancing ensures that if one tank were to experience a failure, the other tanks would have a sufficient buffer zone to reduce the risk of a cascading effect in terms of fire or explosion. The other options fall outside of this established guideline, as they either suggest too little or too much distance compared to best practices that balance safety with practicality in tank placement. Understanding these requirements is crucial for compliance with local codes and standards in hazardous materials management.