Statutes, codes, and regulations
Washington Administrative Code
Title 296 - Labor and Industries, Department ofChapter 296-307 - Safety standards for agricultureSPECIALIZED OPERATIONS
Part U-1 - Hazardous Materials - Anhydrous Ammonia
Section 296-307-40029 - Filling densities

Wash. Admin. Code § 296-307-40029

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Current through Register Vol. 24-20, October 15, 2024
Section 296-307-40029 - Filling densities

Filling density means the percent ratio of the weight of the gas in a container to the weight of water at 60°F that the container will hold. One pound of water equals 27.737 cubic inches at 60°F. To determine the weight capacity of the tank in pounds, the weight of a gallon (231 cubic inches) of water at 60°F in air must be 8.32828 pounds.

(1) The filling densities for nonrefrigerated containers must not exceed the following:

Aboveground Underground
(i) Uninsulated 56% 58%
(ii) Insulated 57%

(iii) DOT containers must be filled according to DOT regulations.

This corresponds to 82% by volume at -28°F, 85% by volume at 5°F, 87.5% by volume at 30°F, and 90.6% by volume at 60°F.

(2) When containers are filled according to liquid level by any gauging method other than a fixed length dip tube gauge, each container must 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 60°F basis.

Wash. Admin. Code § 296-307-40029

Amended by WSR 20-21-091, Filed 10/20/2020, effective 11/20/2020

97-09-013, recodified as § 296-307-40029, filed 4/7/97, effective 4/7/97. Statutory Authority: RCW 49.17.040,[49.17.]050 and [49.17.]060. 96-22-048, § 296-306A-40029, filed 10/31/96, effective 12/1/96.