What is a requirement for vent piping connected to underground tanks?

The requirement for vent piping connected to underground tanks is that the discharge point must be at least 12 feet above adjacent ground. This specification is crucial for ensuring that any vapors released from the vent are safely dispelled into the atmosphere, thereby reducing the risk of flammable vapor accumulation in low-lying areas. By maintaining this height, the design ensures sufficient ventilation and mitigates hazards associated with vapor buildup that could lead to fire or explosion risks.

Aligning with safety regulations, this requirement is part of a larger framework intended to protect both the environment and public health from the potential hazards associated with USTs. The elevation helps prevent vapors from entering buildings or other confined spaces where they could pose health risks or ignite. Therefore, ensuring that the discharge point is sufficiently elevated plays an essential role in the overall safety management of underground storage tanks.