WorksheetsEPA Core Quiz
Total questions: 20
Worksheet time: 7mins
Chlorofluorocarbon refrigerants have the highest
ozone depletion potential and are the most
harmful to stratospheric ozone.
True
False
What does ODP stand for?
outdoor pollutants
ozone depletion potential
ozone distillation process
A refrigerant recovery cylinder should be filled to no more than
85%
45%
90%
80%
What is ODP?
The measure of the density of the stratosphere
the measurement of the ozone layer
the measurement of CFC's and HCFC's ability to destroy the ozone
Which refrigerant is the most harmful to the ozone layer
R-12 CFC
R-22 HCFC
R-134A HFC
The clean air act
prohibits venting of CFC,s and HCFS,s as of November 15, 1995
prohibits venting of CFC,s and HCFC,s as of july 1,1994
prohibits venting of CFC's and HCFC's as of November 14,1994
Zeotropic and some near-azeotropic blends use
Bubble and dew points
R-400
R-407c
Bubble points
When disposing of a refrigerant cylinder,
vent the refrigerant to the atmosphere and remove the top.
recover the refrigerant and reader the cylinder useless.
evacuate the cylinder and use as an air tank.
When is it mostly likely that an appliances will need its refrigerant recovered?
before it can be discarded
after purging the system with dry nitrogen
after the system obtained a leak
What is known as de minimis release?
It is a maximum amount of refrigerant that should not be released to atmosphere when servicing equipment
It is a minimum amount of refrigerant that can be released to the atmosphere when servicing equipment
It is a minimum amount of refrigerant that must be recovered when servicing equipment
What does the term temperature glide refer to?
the different refrigerant boiling and condensing points of a blended refrigerant
zeotropic refrigerant as it is charged into a system as a gas
the point at which the refrigerant temperature decreases at it exits an excessive valve
Service technicians who violate the Clean Air Act
may be fined
may lose certification
Both A and B
Azeotropic refrigerant mixtures contain
One refrigerant
No refrigerants
Two or more refrigerants
Three or more refrigerants
How much of a fine can be issued for venting refrigerant
$5,000
$10,000
$27,500
Leak detection methods and devices used must be approved by the
manufacturer
employer
co-worker
manager
An award of _____ is given to the person who supplies information about the venting of refrigerants.
$5,000
$10,000
$27,500
Fractionation is the separation of blended refrigerants caused by different vapor pressures.
True
False
What is the pressure range of the high side gauge that is located on a manifold set?
30" Hg to 300 psig.
0 psig to 300 psig
0 psig to 500 psig
Hydrochlorofluorocarbon (HCFC) refrigerants contain
hydrogen, chlorine, fluorine, and carbon
bromine, zinc, gold, and copper
scandium, calcium, hydrogen, and iron
hydrogen, oxygen, carbon, fluorine
Ozone in the stratosphere consists of
molecules containing 3
oxygen atoms
nitrogen atoms
carbon atoms
hydrogen atoms
