Washington Administrative Code › Title 296 - Labor and Industries, Department of › Chapter 296-826 - Anhydrous ammonia › Section 296-826-099 - Definitions

Current through Register Vol. 24-14, July 15, 2024
Appurtenance.
All devices that are added onto the
				system such as pumps, compressors, safety relief devices, liquid-level gauging
				devices, valves, and pressure gauges.
Capacity.
The total volume of the container
				measured in U.S. gallons, unless otherwise specified.
Container.
All vessels, tanks, cylinders or
				spheres used for transportation, storage or application of anhydrous
				ammonia.
Cylinder.
A container constructed according to the
				United States Department of Transportation specifications with a water capacity
				of one thousand pounds or less.
Design pressure.
The same as the "maximum
				allowable working pressure" as used in the Unfired Pressure Vessel Code.
DOT regulations.
The department of transportation
				(DOT) hazardous materials regulations and specifications for shipping
				containers found in
				Title
				49 -Transportation, Code of
				Federal Regulations, Parts 171 to 190, inclusive.
Filling density.
The ratio of the weight of the
				gas in a container to the weight of water at 60°F that the container will
				hold. One lb. H2O = 27.737 cu. in. at 60°F.
For determining the weight capacity of the tank in pounds, the
				weight of a gallon (231 cubic inches) of water at 60°F in air is 8.32828
				pounds.
Gas.
Anhydrous ammonia in either the gaseous or
				liquefied state.
Hydrostatic relief valve.
An automatic pressure
				activated valve for liquid service.
(a) It is characterized by a throttle or slow weep opening, a
				nonpop-action.
(b) Refer to American National Standards Institute,
Terminology for Pressure Relief Devices
, B95.1, for more
				information.
"psig"
and
"psia."
Abbreviations that
				mean the following:
(a) "psig" refers to pounds per square inch gauge.
(b) "psia" refers to absolute pounds per square inch.
Safety relief valve.
An automatic spring loaded or equivalent type
				pressure activated device for gas or vapor service.
(a) It is characterized by a pop-action upon opening, and is
				sometimes referred to as a pop valve.
(b) Refer to American National Standards Institute, Terminology
				for Pressure Relief Devices, B95.1 for more information.
Semi-trailer.
Every vehicle that meets both of the
				following:
(a) Designed for carrying property and for being drawn by a
				motor vehicle;
(b) Constructed so that some part of its weight and the weight
				of its load rests upon or is carried by another vehicle.
Systems.
An assembly of equipment consisting of
				the container or containers, appurtenances, pumps, compressors, and
				interconnecting piping.
Tank motor vehicle.
Any motor vehicle designed or
				used for the transportation of anhydrous ammonia that has either:
(a) A tank designed to be permanently attached to any motor
				vehicle; or
(b) A container that is not permanently attached but needs to
				be loaded and unloaded without being removed from the motor vehicle due to its
				size, construction, or means of attachment.
Trailer.
Every vehicle meeting all of the
				following:
(a) Designed for carrying property and for being drawn by a
				motor vehicle;
(b) Constructed so that no part of its weight except the towing
				device rests on the towing vehicle.