Forum Discussion
JJBIRISH
Oct 31, 2013Explorer
Chances are It was improperly filed the first time, if it wasn’t filled by weight… The correct fill is 80% but correctly filled is 80% @ 60* or to be sure it is 4.24 pounds per gallon of propane at any temperature…
So if the tank was filled the first time early in the morning after a cold night of say 48* to 80% in volume the tank is 2% overfilled… if it wasn’t sitting on a true level spot it could be more or less…
Now on the second fill it was 72* ambient temp and a sunny day… the gas in the tank would be 2% more by volume and 4 % more than the first fill… this can be a dangerous situation while transporting the tank, as it was overfilled enough that it could have discharged propane vapor or even liquid through the relief valve into its storage compartment, or worse yet would be to get liquid propane to the appliance designed to work on vapor only… it also explains why it is still too full even after using its propane…
This is the reason you want properly trained people dispensing the product…
49 CFR 170-179) for filling cylinders, storage tanks, tank trucks, and tank cars allow adequate vapor space for liquid expansion as the result of a change in atmospheric temperature.
So if the tank was filled the first time early in the morning after a cold night of say 48* to 80% in volume the tank is 2% overfilled… if it wasn’t sitting on a true level spot it could be more or less…
Now on the second fill it was 72* ambient temp and a sunny day… the gas in the tank would be 2% more by volume and 4 % more than the first fill… this can be a dangerous situation while transporting the tank, as it was overfilled enough that it could have discharged propane vapor or even liquid through the relief valve into its storage compartment, or worse yet would be to get liquid propane to the appliance designed to work on vapor only… it also explains why it is still too full even after using its propane…
This is the reason you want properly trained people dispensing the product…
49 CFR 170-179) for filling cylinders, storage tanks, tank trucks, and tank cars allow adequate vapor space for liquid expansion as the result of a change in atmospheric temperature.
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