What is the minimum height required for a fuel tank vent above ground level?

The minimum height required for a fuel tank vent above ground level is set to ensure safety and proper ventilation while minimizing the risk of accidents. A height of 12 inches is specified to help prevent the accumulation of flammable vapors, which could pose a fire hazard if the vent were lower. This height also reduces the likelihood of debris, snow, or water obstructing the vent, ensuring that it functions effectively in allowing gases to escape and promoting a safe environment around the tank.

In comparison, lower heights like 6 inches, 10 inches, or 18 inches may not provide the necessary separation from ground level to keep the vent functionally safe and free from obstruction. Therefore, 12 inches is the most balanced requirement for maintaining safety standards while still allowing for feasible installation and functionality of fuel tanks.