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Gas which may be placed in a container for determining the length of a fixed dip tube is determined by multiplying the maximum volume of liquefied petroleum gas obtained by the formula in paragraph (b)(19)(b) of this section by the pounds of liquefied petroleum gas in a gallon at 40 deg. F. for aboveground and at 50 deg. F. for underground containers. For example, typical pounds per gallon are specified below:

Example: Assume a 100-gallon total water capacity tank for aboveground storage of propane having a specific gravity of 0.510 of 60 deg. F.

[(100 (gals.) X 42 (filling density from subparagraph (12) of this paragraph))divided by(0.510 X 1.031 (correction factor from Table H-29) X 100)] = (4200 divided by 52.6)

(4200 divided by 52.6) = 79.8 gallons propane, the maximum amount permitted to be placed in a 100-gallon total water capacity aboveground container equipped with a fixed dip tube.

[(Maximum volume of LP-Gas (from formula in subdivision (b) of this subdivision) X 100) divided by Total water content of container in gallons] = Maximum percent of LP-Gas

Above-ground,
pounds per gallon
Under-ground
pounds per gallon
Propane 4.37 4.31
N Butane 4.97 4.92

Related Code Sections

1910.110(f) Hazardous Materials, Storage of Containers Awaiting Use or Resale
in LP-Gas service when stored inside, shall be considered as full containers for the purpose of determining the maximum quantity of LP-Gas permitted ...