Section 355IAC3-2-9. Filling densities

   (a) The filling densities for nonrefrigerated containers shall not exceed the following:

	Aboveground
(1) Uninsulated	56%*
(2) Insulated	57%
(3) DOT containers shall be filled in accordance with DOT regulations.
*This corresponds to 85% by volume at 5°F and to 90.6% by volume at 60°F.

  (b) 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 pressure relief valve.

  (c) If containers are to be filled according to liquid level by any gauging method other than a fixed length dip tube gauge, each container shall have a thermometer well so that the internal liquid temperature can be easily determined and the amount of liquid and vapor in the container corrected to a sixty (60) degrees Fahrenheit basis. (State Chemist of the State of Indiana; Agricultural Ammonia PT A, Sec II, Rule 2.9; filed Dec 30, 1965, 2:15 p.m.: Rules and Regs. 1966, p. 9; filed Jan 19, 2001, 2:04 p.m.: 24 IR 1632; readopted filed Jun 20, 2001, 3:22 p.m.: 24 IR 3822; readopted filed Apr 27, 2007, 2:03 p.m.: 20070509-IR-355070039RFA; readopted filed Nov 25, 2013, 3:27 p.m.: 20131225-IR-355130482RFA)