EPA 608 Book Exam CORE SECTION A GENERAL KNOWLEDGE

EPA 608 Book Exam CORE SECTION A
GENERAL KNOWLEDGE

The layer of the Stratosphere that protects us from excessive Ultra Violet radiation is
comprised of - correct Answers-The stratosphere is the Earth's security blanket. It is
located between 10 and 30 miles above sea level and is comprised of, among other
things, Ozone

The molecule found in CFC's and HCFC's that depletes ozone is: - correct Answers-
chlorine

There are four (4) categories of technician certification - correct Answers-TYPE I
Persons who maintain, service or repair small appliances must be certified as Type I
technicians.
TYPE II
Persons, who maintain, service, repair or dispose of high or very high-pressure
appliances, except small appliances and
motor vehicle air conditioning systems, must be certified as Type II technicians.
TYPE III
Persons, who maintain, service, repair, or dispose of low-pressure appliances must be
certified as Type III technicians.
UNIVERSAL
Persons, who maintain, service or repair both low and high-pressure equipment, as well
as small appliances, must be certified as Universal technicians.

The stratosphere is the Earth's security blanket is located - correct Answers-between 10
and 30 miles above sea level and is comprised of, among other things, Ozone

Ozone molecule consists of - correct Answers-three oxygen atoms (03)

Ozone protects us from harmful ultraviolet radiation and helps maintain stable Earth
temperatures. - correct Answers-True

Stratospheric Ozone depletion is a global problem - correct Answers-True

Depletion of Ozone in the stratosphere causes: - correct Answers-♦ CROP LOSS
♦ INCREASE IN EYE DISEASES
♦ SKIN CANCER
♦ REDUCED MARINE LIFE
♦ DEFORESTATION
♦ INCREASED GROUND LEVEL OZONE

, CFC's have been found in air samples taken from the stratosphere - correct Answers-
True

CFC's and HCFC's, when released into the atmosphere
deplete the Ozone layer. - correct Answers-True

In CFC's and HCFC's, chlorine in these compounds is the culprit that damages the
Ozone - correct Answers-True

When a chlorine atom meets with an Ozone
molecule, it takes one Oxygen atom from the Ozone. This forms a compound called
Chlorine Monoxide (CIO) and leaves an O2 molecule. The Chlorine Monoxide will
collide with another Ozone molecule, release its Oxygen atom, forming two O2
molecules, and leave the chlorine free to attack another Ozone molecule. - correct
Answers-True

A single Chlorine atom can destroy 100,000 Ozone molecules. - correct Answers-True

Ozone Depletion Potential (ODP) is a measurement of CFC's and HCFC's ability to
destroy ozone - correct Answers-True

CFC's have the highest ODP - correct Answers-True

HFC's (R-134A) do not contain chlorine and have no Ozone Depletion Potential -
correct Answers-True

Type Example Elements
CFC R-11, 12, 500 Chlorine Fluorine Carbon
HCFC R-22, 123 Hydrogen Chlorine Fluorine Carbon
HFC R-134a Hydrogen Fluorine Carbon - correct Answers-

It is a violation of Section 608 to: - correct Answers-♦ Falsify or fail to keep required
records;
♦ Fail to reach required evacuation rates prior to opening or disposing of appliances;
♦ Knowingly release (vent) CFC's, HCFC's or HFC's while repairing appliances, with the
exception of de-minimus
releases;
♦ Fail to recover CFC's, HCFC's or HFC's before opening or disposing of an appliance;
♦ Fail to have an EPA approved recovery device, equipped with low loss fittings, and
register the device with the EPA;
♦ Add nitrogen to a fully charged system, for the purpose of leak detection, and thereby
cause a release of the mixture;
♦ Dispose of a disposable cylinder without first recovering any remaining refrigerant (to
0 psig.) and then rendering the cylinder useless, then recycling the metal;