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LOW GWP REFRIGERANT PRACTICE EXAM
2026 ALL QUESTIONS AND CORRECT
DETAILED ANSWERS ALREADY A GRADED
|NEW AND REVISED
The minimum concentration of a refrigerant that can propagate a flame
through a consistent mixture of the refrigerant and air is known as the:
Acute toxicity exposure limit (ATELL).
Immediately dangerous to life or health concentration (IDLH).
Lower flmmability limit (LFL).
Upper explosive limit (UEL). - ANSWER- Lower flmmability limit
(LFL).
The first stage of the evacuation process which removes non-
condensables from a system is called:
Degassing.
Dehydration.
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Recovery.
Recycling. - ANSWER- recovery
Once a flammable refrigerant has been recovered and stored in a
cylinder:
It can be taken a safe distance from the jobsite and vented to the
atmosphere.
It must be placed a safe distance away from the work area before a
system repair or installation is started.
It must be placed in ice to ensure it stays below the refrigerant's ignition
temperature.
It should be returned toa reclamation facility prior to beginning the
installation of new equipment. - ANSWER- It must be placed a safe
distance away from the work area before a system repair or installation
is started.
When working with A2L refrigerants, which one of the following is not
an approved leak detection method?
LOW GWP REFRIGERANT PRACTICE EXAM
2026 ALL QUESTIONS AND CORRECT
DETAILED ANSWERS ALREADY A GRADED
|NEW AND REVISED
The minimum concentration of a refrigerant that can propagate a flame
through a consistent mixture of the refrigerant and air is known as the:
Acute toxicity exposure limit (ATELL).
Immediately dangerous to life or health concentration (IDLH).
Lower flmmability limit (LFL).
Upper explosive limit (UEL). - ANSWER- Lower flmmability limit
(LFL).
The first stage of the evacuation process which removes non-
condensables from a system is called:
Degassing.
Dehydration.
, 2|Page
Recovery.
Recycling. - ANSWER- recovery
Once a flammable refrigerant has been recovered and stored in a
cylinder:
It can be taken a safe distance from the jobsite and vented to the
atmosphere.
It must be placed a safe distance away from the work area before a
system repair or installation is started.
It must be placed in ice to ensure it stays below the refrigerant's ignition
temperature.
It should be returned toa reclamation facility prior to beginning the
installation of new equipment. - ANSWER- It must be placed a safe
distance away from the work area before a system repair or installation
is started.
When working with A2L refrigerants, which one of the following is not
an approved leak detection method?
