4.12.712    FILLINGS DENSITIES

(1)  Filling density shall be limited to 85 percent capacity by volume at 60 degrees F.

(2)  The filling densities for nonrefrigerated containers by weight shall not exceed the following:

                     Aboveground   Underground

(a)  Uninsulated            56%            58%

(b)  Insulated             57%

(c)  Containers regulated by department of transportation shall be filled in accordance with Hazardous Materials Transportation Regulations (Subch. C, ARM 171.6)  .

(3)  The filling density for refrigerated storage tanks shall be such that the tanks will not be liquid full at a liquid temperature corresponding to the vapor pressure at the start-to-discharge pressure setting of the safety relief valve.

History: Sec. 80-10-503, MCA; IMP, Sec. 80-10-503, MCA; NEW, 1986 MAR p. 1320, Eff. 10/31/86.