Quick Answer
Vent placement on underground propane tanks typically follows guidelines from UL 58 and NFPA 58, which dictate specific distances from the tank, openings, and other structures to ensure safe combustion and prevent fires.
Underground Vent Placement Considerations
When installing vents on underground propane tanks, it’s essential to consider the depth of burial and the tank’s diameter. According to UL 58, the vent should be located at least 6 inches above the surrounding ground surface and 12 inches away from the tank’s inlet and outlet connections. The vent should also be at least 12 inches away from any combustible materials.
Vent Location Based on Tank Size
For underground propane tanks with capacities between 1,000 and 4,000 gallons, the vent should be located at least 12 inches above the surrounding ground surface and 18 inches away from the tank’s inlet and outlet connections. For larger tanks with capacities between 4,000 and 12,000 gallons, the vent should be at least 18 inches above the ground surface and 24 inches away from the tank’s inlet and outlet connections. These distances help ensure proper combustion and prevent fires.
Additional Safety Considerations
When placing vents on underground propane tanks, it’s also crucial to consider the soil type and moisture levels. For tanks buried in areas with high water tables or unstable soil, additional precautions may be necessary to prevent damage to the tank and its components. Additionally, ensure that the vent is accessible for maintenance and inspections to prevent any potential safety issues.
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