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Air Exhaust ✔Correct Answers-Air being removed from any space or piece of equipment and
conveyed directly to the atmosphere by means of openings or ducts.
Auto- Ignition ✔Correct Answers-Ignition of a substance, such as oily rags and hay, caused by
a localized heat increasing reaction between the oxidant and the fuel and not involving addition
of heat from an outside source.
Compressed Gas ✔Correct Answers-A material or mixture of material that is a gas at 68
degrees F or less at 14.7psia of pressure, has a boiling point of 68 degrees F or less at 14.7psia
and can be liquefied, non-liquefied or in solution at that temperature and pressure, except that
gases which have no other health or physical hazard properties are not considered to be
compressed until the pressure in the packaging exceeds 41psia at 68 degrees F.
Types of Compressed Gases ✔Correct Answers-1. Non-liquefied compressed gases- Gases
other than those in solution, that are in a packaging under the charged pressure and are entirely
gaseous at a temperature at 68 degrees F.
2. Liquefied compressed gases- Gases that in a packaging under the charged pressure are
partially liquid at a temperature of 68 degrees F.
3. Compressed Gases in Solution- Non-liquefied gases that are dissolved in a solvent.
4. Compressed Gas Mixtures- A mixture of two or more compressed gases contained in a single
packaging, the hazard properties of which are represented by the properties of the mixture as a
whole.
Compressed Gas Container ✔Correct Answers-A pressure container designed to hold
compressed gases at pressures greater than 1 atmosphere at 68 degrees F.
BE CAREFUL!!
Compressed Gas System ✔Correct Answers-An assembly of components, such as containers,
reactors, pumps, compressors, and connecting piping and tubing, designed to contain,
distribute or transport compressed gases.
Permits for a Compressed Gas System ✔Correct Answers-Not transferrable and any change in
occupancy, operation, tenancy, or ownership must require a new permit. A permit is required to
compressed gases in excess of exceeding 6psig.
Exception: Outdoor air compressing at other then than a fair or festival.