What is the minimum distance that relief vents should typically be from an ignition or heat source?

The minimum distance that relief vents should be located from an ignition or heat source is 36 inches. This standard is based on safety protocols designed to prevent potential hazards associated with gas leaks. Relief vents serve to release excess pressure safely and effectively. If these vents are too close to an ignition source, there is an increased risk of fire or explosion if flammable gases were to escape.

The 36-inch requirement creates a buffer zone, allowing for the dissipation of any potential gas release without it being immediately ignited by nearby flames or heat sources. Such safety measures help to ensure both personnel and property are protected in environments where natural gas is used and vented. This distance is established based on studies and practices in the gas industry to mitigate risks associated with gas leaks.