Quote:
Originally Posted by TNGary
The tanks will be permanent and filled with a tanker truck with a hose. I am truly surprised that they allow as you noted in your reply, but have no reason to disagree. Propane is highly flammable with a boiling point of minus 44 degrees F. Also with a flash point of minus 155 degrees F. Which means any spark plugs at least 2.1% propane in air will ignite. Underground metal tanks eventually will rust which is why the testing is required. I remember the time I submitted a request to my boss to attend a "LUST" conference. Leaking Underground Storage Tanks. If your buying a home and the neighbor has a buried propane tank....suggest to walk. One unknowingly landscaper with a metal shovel and it would be catastrophic. Not to mention the nuisance noise from the programmed test run of the back up generator. Please note many of the middle of the line back up generators have motors with 4 cylinders, the size of a small car engine, including radiators and exhaust pipes....just like a car engine.
It would be very interesting if someone could confirm if there is a public record of buried tanks and their respective testing records.
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The only way you have a problem with a buried LP Tank is if you rupture the tank. The mixture inside the tank is too rich to ignite. The size of the rupture would determine the size of your problem. Also the LP may or may not ignite. Also these tanks that are buried are designed for that type of service. Its like any flammable liquid it must be handled properly. No worse then the 20 plus gallons of gasoline sitting in your garage every night.