EPA 608 UNIVERSAL EXAM REVIEW STUDY
NOTES
◉ Reprocessing (Refrigerant).
Answer: The cleaning and preparation of previously used refrigerant
so it can be reused safely in equipment without releasing it to the
atmosphere. It generally involves removing oil, moisture, acids, and
particles through filtration or drying processes, improving quality
but not necessarily restoring it to new product purity. Unlike full
restoration performed at an approved facility, this level of treatment
is typically suitable for reuse in the same equipment or under the
same ownership rather than for sale back into the marketplace.
◉ Recycling (Refrigerant).
Answer: The cleaning of previously removed working fluid so it can
be reused, typically by passing it through filters or dryers to remove
moisture, oil, acids, and debris. It improves quality enough for reuse
in equipment, often in the same system or with the same owner, but
does not restore it to new product purity levels. It is less thorough
than full restoration performed at an approved facility.
◉ De Minimis Rule.
Answer: A regulatory allowance that recognizes very small,
unavoidable releases of refrigerant that can occur during proper
service, maintenance, recovery, and disposal when using approved
,procedures and equipment. It does not permit intentional release
and does not excuse careless work. Only minimal amounts that
cannot reasonably be prevented are allowed, and technicians must
still follow recovery requirements, use certified tools, repair leaks
when required, and avoid practices that increase emissions.
Violation beyond these limited unintentional amounts can still result
in penalties and enforcement action.
◉ Natural Refrigerant Exemption.
Answer: An allowance in federal refrigerant regulations that
excludes certain naturally occurring alternatives from the
prohibition on releasing to the atmosphere because they do not
damage the protective upper atmospheric layer. Examples include
carbon dioxide, ammonia, and approved hydrocarbons when used as
replacements in cooling systems. This does not remove safety
responsibilities, and users must still follow handling, equipment,
and hazard requirements, but these substances are not treated the
same as traditional ozone depleting or high global warming
refrigerants under release rules.
◉ Natural Refrigerants.
Answer: Naturally occurring substances used as working fluids in
cooling systems rather than man made chemical blends. They are
typically found in nature and include options such as carbon dioxide,
ammonia, water, and certain approved hydrocarbons. They do not
harm the protective upper atmospheric layer and many have lower
climate impact compared to older synthetic products. However, they
,may have other hazards such as flammability, high pressure, or
toxicity, so proper design, training, and safety procedures are still
required when using them.
◉ Montreal Protocol.
Answer: An international environmental agreement adopted on
September 16, 1987 and enforced beginning January 1, 1989 in
which nations committed to eliminating production and use of
substances that damage the protective upper atmospheric layer,
especially chlorine and bromine based chemicals such as CFCs and
halons. It created clear phaseout schedules, supported development
of safer alternatives, and established cooperation, monitoring, and
enforcement among participating countries. It is considered one of
the most successful global environmental agreements ever created,
greatly reducing emissions of harmful compounds, aiding recovery
of the protective layer, and helping limit related climate impacts.
◉ Kigali Amendment.
Answer: A major update to the global ozone protection treaty
adopted on October 15, 2016 in Kigali, Rwanda. While earlier
international action focused on eliminating chlorine based
substances that damage the protective upper atmosphere, this
agreement targets hydrofluorocarbons, which do not destroy that
layer but are powerful climate warming gases. It requires
participating nations to gradually reduce production and use of
these chemicals through phased schedules, encourages development
and adoption of lower impact alternatives, and supports technology
, improvements and financial assistance for developing regions. Its
goal is to significantly reduce greenhouse effects from cooling and
refrigeration while preserving the environmental gains already
achieved under the original treaty.
◉ Phased-out Refrigerant Requirements.
Answer: Rules that apply to substances no longer allowed to be
newly produced or imported because of environmental harm. These
include prohibition of venting, required recovery during service and
disposal, use of certified equipment and certified technicians, record
keeping, proper leak management where required, and restrictions
on sale so only qualified personnel can obtain them. Existing
supplies may still be used for servicing if they are recovered,
recycled, or fully restored to new product purity at approved
facilities, but they cannot be newly manufactured or brought into the
country. The purpose is to prevent further environmental damage
while still supporting maintenance of older equipment until it is
replaced.
◉ Phased-out Appliance Requirements.
Answer: Rules for equipment that still contains substances no longer
allowed to be newly produced or imported require that no
intentional release occur, service must be performed using certified
recovery equipment by certified technicians, and the working fluid
must be removed and properly handled before disposal or
dismantling. Leak repair, documentation, and record keeping may
apply depending on system size and type. When these systems need
NOTES
◉ Reprocessing (Refrigerant).
Answer: The cleaning and preparation of previously used refrigerant
so it can be reused safely in equipment without releasing it to the
atmosphere. It generally involves removing oil, moisture, acids, and
particles through filtration or drying processes, improving quality
but not necessarily restoring it to new product purity. Unlike full
restoration performed at an approved facility, this level of treatment
is typically suitable for reuse in the same equipment or under the
same ownership rather than for sale back into the marketplace.
◉ Recycling (Refrigerant).
Answer: The cleaning of previously removed working fluid so it can
be reused, typically by passing it through filters or dryers to remove
moisture, oil, acids, and debris. It improves quality enough for reuse
in equipment, often in the same system or with the same owner, but
does not restore it to new product purity levels. It is less thorough
than full restoration performed at an approved facility.
◉ De Minimis Rule.
Answer: A regulatory allowance that recognizes very small,
unavoidable releases of refrigerant that can occur during proper
service, maintenance, recovery, and disposal when using approved
,procedures and equipment. It does not permit intentional release
and does not excuse careless work. Only minimal amounts that
cannot reasonably be prevented are allowed, and technicians must
still follow recovery requirements, use certified tools, repair leaks
when required, and avoid practices that increase emissions.
Violation beyond these limited unintentional amounts can still result
in penalties and enforcement action.
◉ Natural Refrigerant Exemption.
Answer: An allowance in federal refrigerant regulations that
excludes certain naturally occurring alternatives from the
prohibition on releasing to the atmosphere because they do not
damage the protective upper atmospheric layer. Examples include
carbon dioxide, ammonia, and approved hydrocarbons when used as
replacements in cooling systems. This does not remove safety
responsibilities, and users must still follow handling, equipment,
and hazard requirements, but these substances are not treated the
same as traditional ozone depleting or high global warming
refrigerants under release rules.
◉ Natural Refrigerants.
Answer: Naturally occurring substances used as working fluids in
cooling systems rather than man made chemical blends. They are
typically found in nature and include options such as carbon dioxide,
ammonia, water, and certain approved hydrocarbons. They do not
harm the protective upper atmospheric layer and many have lower
climate impact compared to older synthetic products. However, they
,may have other hazards such as flammability, high pressure, or
toxicity, so proper design, training, and safety procedures are still
required when using them.
◉ Montreal Protocol.
Answer: An international environmental agreement adopted on
September 16, 1987 and enforced beginning January 1, 1989 in
which nations committed to eliminating production and use of
substances that damage the protective upper atmospheric layer,
especially chlorine and bromine based chemicals such as CFCs and
halons. It created clear phaseout schedules, supported development
of safer alternatives, and established cooperation, monitoring, and
enforcement among participating countries. It is considered one of
the most successful global environmental agreements ever created,
greatly reducing emissions of harmful compounds, aiding recovery
of the protective layer, and helping limit related climate impacts.
◉ Kigali Amendment.
Answer: A major update to the global ozone protection treaty
adopted on October 15, 2016 in Kigali, Rwanda. While earlier
international action focused on eliminating chlorine based
substances that damage the protective upper atmosphere, this
agreement targets hydrofluorocarbons, which do not destroy that
layer but are powerful climate warming gases. It requires
participating nations to gradually reduce production and use of
these chemicals through phased schedules, encourages development
and adoption of lower impact alternatives, and supports technology
, improvements and financial assistance for developing regions. Its
goal is to significantly reduce greenhouse effects from cooling and
refrigeration while preserving the environmental gains already
achieved under the original treaty.
◉ Phased-out Refrigerant Requirements.
Answer: Rules that apply to substances no longer allowed to be
newly produced or imported because of environmental harm. These
include prohibition of venting, required recovery during service and
disposal, use of certified equipment and certified technicians, record
keeping, proper leak management where required, and restrictions
on sale so only qualified personnel can obtain them. Existing
supplies may still be used for servicing if they are recovered,
recycled, or fully restored to new product purity at approved
facilities, but they cannot be newly manufactured or brought into the
country. The purpose is to prevent further environmental damage
while still supporting maintenance of older equipment until it is
replaced.
◉ Phased-out Appliance Requirements.
Answer: Rules for equipment that still contains substances no longer
allowed to be newly produced or imported require that no
intentional release occur, service must be performed using certified
recovery equipment by certified technicians, and the working fluid
must be removed and properly handled before disposal or
dismantling. Leak repair, documentation, and record keeping may
apply depending on system size and type. When these systems need
