2021 NFPA99 MEDICAL GAS
QUESTIONS WITH CORRECT
ANSWERS 2025/2026
A manual reset local alarm that indicates when the capacity of the instrument air central supply
A A A A A A A A A A A A A A A
system not in use is less than the equivalent capacity of - correct answersOne compressor
A A A A A A A A A A A A A A A
After a final tie - A A A A
In on an active vacuum system , each vacuum joints shall be tested with a leak detector or other
A A A A A A A A A A A A A A A A A A A
means that will allow detectant on an active vacuum system . - correct answersUltrasonic
A A A A A A A A A A A A A A
After the final tie- A A A
in each joint shall be leak tested by the source gas. New work and the existing system at the nor
A A A A A A A A A A A A A A A A A A A
mal operating pressure shall be leak checked with a leak detectant that is safe for use with oxyg
A A A A A A A A A A A A A A A A A
en and does NOT contain _______________ - correct answersAmmonia
A A A A A A A A
After the piping system, the blow down test shall be done. Then the installer must perform whic
A A A A A A A A A A A A A A A A
h of the following test? - correct answersInitial pressure test
A A A A A A A A A
Alarm panels and shutoff valves labeling shall be ____________ when modifications are made,
A A A A A A A A A A A A A
changing the areas serviced - correct answersUpdated A A A A A A
All gas outlets with gauge pressure of 345 kPa (50 psi), including, but not limited to, oxygen, nitr
A A A A A A A A A A A A A A A A A
ous oxide, medical air, and carbon dioxide, shall deliver 100 SLPM (3.5 SCFM) with a pressure dr
A A A A A A A A A A A A A A A A
op of not more than 35 kPa (______) and static pressure of 345 kPa to 380 kPa (50psi to 55 psi) -
A A A A A A A A A A A A A A A A A A A A A
correct answers5 psi
A A A
Area alarms shall be tested to verify the warning signals for all vital life support and critical care
A A A A A A A A A A A A A A A A A A
areas if the pressure in the piping system increases or decreases by _______ -
A A A A A A A A A A A A A
correct answers20%
A A
At the sample port a demand of approximated 25% load shall be created to cause the compress
A A A A A A A A A A A A A A A A
ors to cycle on and off continuously and the dryers to operate for the ______ period. -
A A A A A A A A A A A A A A A A
correct answers12 hour
A A A
Before the piping system is put into use, who is responsible for the ascertaining that the gas deli
A A A A A A A A A A A A A A A A A
vered to the outlet/inlet has the proper labels and connecting fittings. -
A A A A A A A A A A A
correct answersFacility authority
A A A
Breached portions of the systems subject to inspection and testing shall be confined to only the
A A A A A A A A A A A A A A A A
specific altered zone or area that is downstream for pressure gases at the point of intrusion. Wh
A A A A A A A A A A A A A A A A
ere a system shall be declared breached? -
A A A A A A A
correct answersPhysical separation of pipeline, system component removal, replacement or a
A A A A A A A A A A A
ddition of system components A A A
, Category 2 & 3 medical has and vacuum systems are allowed to be ________ on the amount of
A A A A A A A A A A A A A A A A A A
compressors and vacuum pumps - correct answersSimplex A A A A A A
Category 2 oxygen piping shall be at least 1 size larger than piping for _______? -
A A A A A A A A A A A A A A A
correct answersNitrous oxide
A A A
Category 3 gas- A A
power device supply systems, vacuum systems and scavenging systems. The initial tests shall be
A A A A A A A A A A A A A
performed before the final tests shall be conducted by ______. -
A A A A A A A A A A A
correct answersInstaller, representative of the system manufacturer, medical gas system verifi
A A A A A A A A A A A
er 6030 A
Category 3 piped gas and vacuum systems only ______ shall be permitted. -
A A A A A A A A A A A A
correct answersMinimal or no sedation
A A A A A
Category 3 vacuum source equipment shall be obtained from, and be installed under the super
A A A A A A A A A A A A A A
vision of the __________? - A A A A
correct answersManufacturer, supplier, who is familiar with its installation, operation and use
A A A A A A A A A A A A
Category 2 & 3 medical gas systems are required to have how many alarm panels? -
A A A A A A A A A A A A A A A
correct answers1
A A
Cylinders in service and in storage shall be __________ secured and located to prevent falling o
A A A A A A A A A A A A A A A
r being knocked over. - correct answersIndividually
A A A A A A
Dental air sources for a compressor intake located inside the building shall be located within a s
A A A A A A A A A A A A A A A A
pace where no _______ are stored or used. -
A A A A A A A A
correct answersChemical based materials, patient medical treatment, discharge from category
A A A A A A A A A A
3 vacuum system
A A A
Dental applications that use flexible connectors shall have a gauge pressure rating not less than
A A A A A A A A A A A A A A A
_______ - correct answers1000 psi A A A A
Distribution piping for support gas systems (nitrogen and instrument air) shall be ________ typ
A A A A A A A A A A A A A
e "L" copper tube - correct answersASTM B819
A A A A A A A
During the initial pressure test, the source shutoff valve shall remain closed and the test pressur
A A A A A A A A A A A A A A A
e for pressure gases shall be 1.5 times the system working pressure, but not less than ______ -
A A A A A A A A A A A A A A A A A
correct answers150 psi
A A A
Each health care facility shall designate one or more individuals to be the _______ with respect
A A A A A A A A A A A A A A A A
to the facility's medical gas and vacuum systems. -
A A A A A A A A
correct answersResponsible facility authority
A A A A
Final line filters for instrument air shall be equipped with a continuous visual indicator showing
A A A A A A A A A A A A A A A
the status of the filter ________? - correct answersElement life indicator
A A A A A A A A A A
QUESTIONS WITH CORRECT
ANSWERS 2025/2026
A manual reset local alarm that indicates when the capacity of the instrument air central supply
A A A A A A A A A A A A A A A
system not in use is less than the equivalent capacity of - correct answersOne compressor
A A A A A A A A A A A A A A A
After a final tie - A A A A
In on an active vacuum system , each vacuum joints shall be tested with a leak detector or other
A A A A A A A A A A A A A A A A A A A
means that will allow detectant on an active vacuum system . - correct answersUltrasonic
A A A A A A A A A A A A A A
After the final tie- A A A
in each joint shall be leak tested by the source gas. New work and the existing system at the nor
A A A A A A A A A A A A A A A A A A A
mal operating pressure shall be leak checked with a leak detectant that is safe for use with oxyg
A A A A A A A A A A A A A A A A A
en and does NOT contain _______________ - correct answersAmmonia
A A A A A A A A
After the piping system, the blow down test shall be done. Then the installer must perform whic
A A A A A A A A A A A A A A A A
h of the following test? - correct answersInitial pressure test
A A A A A A A A A
Alarm panels and shutoff valves labeling shall be ____________ when modifications are made,
A A A A A A A A A A A A A
changing the areas serviced - correct answersUpdated A A A A A A
All gas outlets with gauge pressure of 345 kPa (50 psi), including, but not limited to, oxygen, nitr
A A A A A A A A A A A A A A A A A
ous oxide, medical air, and carbon dioxide, shall deliver 100 SLPM (3.5 SCFM) with a pressure dr
A A A A A A A A A A A A A A A A
op of not more than 35 kPa (______) and static pressure of 345 kPa to 380 kPa (50psi to 55 psi) -
A A A A A A A A A A A A A A A A A A A A A
correct answers5 psi
A A A
Area alarms shall be tested to verify the warning signals for all vital life support and critical care
A A A A A A A A A A A A A A A A A A
areas if the pressure in the piping system increases or decreases by _______ -
A A A A A A A A A A A A A
correct answers20%
A A
At the sample port a demand of approximated 25% load shall be created to cause the compress
A A A A A A A A A A A A A A A A
ors to cycle on and off continuously and the dryers to operate for the ______ period. -
A A A A A A A A A A A A A A A A
correct answers12 hour
A A A
Before the piping system is put into use, who is responsible for the ascertaining that the gas deli
A A A A A A A A A A A A A A A A A
vered to the outlet/inlet has the proper labels and connecting fittings. -
A A A A A A A A A A A
correct answersFacility authority
A A A
Breached portions of the systems subject to inspection and testing shall be confined to only the
A A A A A A A A A A A A A A A A
specific altered zone or area that is downstream for pressure gases at the point of intrusion. Wh
A A A A A A A A A A A A A A A A
ere a system shall be declared breached? -
A A A A A A A
correct answersPhysical separation of pipeline, system component removal, replacement or a
A A A A A A A A A A A
ddition of system components A A A
, Category 2 & 3 medical has and vacuum systems are allowed to be ________ on the amount of
A A A A A A A A A A A A A A A A A A
compressors and vacuum pumps - correct answersSimplex A A A A A A
Category 2 oxygen piping shall be at least 1 size larger than piping for _______? -
A A A A A A A A A A A A A A A
correct answersNitrous oxide
A A A
Category 3 gas- A A
power device supply systems, vacuum systems and scavenging systems. The initial tests shall be
A A A A A A A A A A A A A
performed before the final tests shall be conducted by ______. -
A A A A A A A A A A A
correct answersInstaller, representative of the system manufacturer, medical gas system verifi
A A A A A A A A A A A
er 6030 A
Category 3 piped gas and vacuum systems only ______ shall be permitted. -
A A A A A A A A A A A A
correct answersMinimal or no sedation
A A A A A
Category 3 vacuum source equipment shall be obtained from, and be installed under the super
A A A A A A A A A A A A A A
vision of the __________? - A A A A
correct answersManufacturer, supplier, who is familiar with its installation, operation and use
A A A A A A A A A A A A
Category 2 & 3 medical gas systems are required to have how many alarm panels? -
A A A A A A A A A A A A A A A
correct answers1
A A
Cylinders in service and in storage shall be __________ secured and located to prevent falling o
A A A A A A A A A A A A A A A
r being knocked over. - correct answersIndividually
A A A A A A
Dental air sources for a compressor intake located inside the building shall be located within a s
A A A A A A A A A A A A A A A A
pace where no _______ are stored or used. -
A A A A A A A A
correct answersChemical based materials, patient medical treatment, discharge from category
A A A A A A A A A A
3 vacuum system
A A A
Dental applications that use flexible connectors shall have a gauge pressure rating not less than
A A A A A A A A A A A A A A A
_______ - correct answers1000 psi A A A A
Distribution piping for support gas systems (nitrogen and instrument air) shall be ________ typ
A A A A A A A A A A A A A
e "L" copper tube - correct answersASTM B819
A A A A A A A
During the initial pressure test, the source shutoff valve shall remain closed and the test pressur
A A A A A A A A A A A A A A A
e for pressure gases shall be 1.5 times the system working pressure, but not less than ______ -
A A A A A A A A A A A A A A A A A
correct answers150 psi
A A A
Each health care facility shall designate one or more individuals to be the _______ with respect
A A A A A A A A A A A A A A A A
to the facility's medical gas and vacuum systems. -
A A A A A A A A
correct answersResponsible facility authority
A A A A
Final line filters for instrument air shall be equipped with a continuous visual indicator showing
A A A A A A A A A A A A A A A
the status of the filter ________? - correct answersElement life indicator
A A A A A A A A A A
