MED GAS ACTUAL EXAM PAPER 2026
QUESTIONS WITH ANSWERS GRADED
A+
◍ When is the initial pressure test conducted, by a medical gas installer, on a
nitrous oxide system?.
Answer: After blowdown of a distribution piping
◍ In those portions of systems intended to handle oxygen at pressures greater
than 350 psi the interconnecting hose shall NOT contain ________
materials?.
Answer: Polymeric
◍ Medical air compressor systems shall have a pressure relief valve set at what
percent above line pressure? A) 20, B) 40, C) 30, D) 50.
Answer: D) 50 percent
◍ In a Category 1 Dental and Gas Vacuum Piping system, which of the
following is an NFPA 99 requirement for the labeling of pipes?.
Answer: Color coding & non-standard pressure
◍ Which of the following treatments shall be performed before brazing cut
ends of a tube to be installed in a medical gas piping system?.
Answer: Cut ends shall be rolled smooth or deburred
◍ Medical air supply systems shall require to? A) meet the requirements of
medical air
U. S.
P. B) have no detectable liquid hydrocarbons, C) Have less than 25 ppm
gaseous hydrocarbon ,.... D) all of the above.
Answer: D), all of the above
,◍ Medical air sources shall be used only for? A) human respiratory
applications B) or operating devices C), instrument air or D) all of the
above.
Answer: A) human respiratory applications
◍ Manifolds for gas cylinders shall actuate a(an) _______ signal and shall
activate an indicator at all _______ alarm panels to indicate when or just
before changeover from one header to the other..
Answer: Local, master
◍ In a non-anesthetizing area, on which side of a zone valve shall the
pressure/vacuum sensor be located?.
Answer: Station outlet/inlet
◍ Liquid ring and permanently sealed bearing compressors shall separate the
oil containing section from the compression chamber by at least two seals?
true or false.
Answer: False
◍ After coolers, where required, shall be provided with individual? A) shutoff
valve B) flexible connectors C) condensate trap or D) pressure indicator.
Answer: C) condensate trap
◍ What is the purpose of using an oxygen analyzer during the piping purge
prior to brazing?.
Answer: Assure that all ambient air has been removed from the pipeline
◍ A medical gas master or area alarm panel shall be set to actuate a(an) _____
indicator when the communication with an alarm-initiating device is
disconnected..
Answer: Audible and visual
◍ When an EOSC becomes the temporary supply source, a facility will
monitor the system by use of which of the following?.
Answer: Providing four connection points to both master alarms
◍ Receivers for medical air shall be equipped with. A) relief valve B)
, automatic and manual drains C) sight glass or D) all of the above.
Answer: D) all of the above
◍ Which of the following conditions must be met where medical gas and
vacuum systems are installed by non-certified personnel?.
Answer: installation by anyone other than 6010 certified personnel is NOT
permitted
◍ Medical air filters shall be located immediately upstream of the? A) after
coolers B) receiver C) pressure indicator or D) final line regulator.
Answer: D) final line regulator
◍ Which of the following systems shall NOT be permitted to be located in an
outdoor enclosure?.
Answer: Medical air compressor supply sources
◍ Metallic flexible joints are being used in the pipeline for vibration control.
Which of the following is NOT required of such joints?.
Answer: suitable for service at 150 psig or above
◍ who shall witness the installer-performed standing vacuum test?.
Answer: the authority having jurisdiction, or its designee
◍ Medical air filter she'll be sized for 100% of this system peak calculated
demand and be rated for a minimum of what efficiency at what micron or
greater? A) 95% @ .5, B) 98%@1, C) 100% @.1, or D) none of the above.
Answer: B) 98% @ 1
◍ Medical air compressors that are designed to separate the oil containing
section from the compression chamber shall be provided with a containing
filter with a what? A) shut off valve B) pressure indicator C) element change
indicator, or D) all of the above.
Answer: C) element change indicator
◍ the medical air compressor intake shall be located a minimum of how many
feet from any exhaust or plumbing vents?.
Answer: 25 feet
, ◍ med air receivers shall be provided with the proper valve that allow the
receiver to be what during service? A) painter B) pressurized C) on line or
D) bypassed.
Answer: D) bypassed
◍ the gas produced by evaporation from the secondary header in a cryogenic
liquid cylinder system shall enter the supply system ________ of the final
line regulator..
Answer: upstream
◍ with the approval of the Authority Having Jurisdiction, in which areas shall
the zone valves be permitted to be secured to prevent inappropriate access?.
Answer: pediatric
◍ factory installed inlet tubes on station outlets shall be NOT less than
__________with 0.3 inch minimum inside diameter..
Answer: NPS 1/4, 3/8 in. O.D.
◍ which of these operations would not breach the vacuum system?.
Answer: testing a system component with a leak detector solution
◍ Dryers, filters and regulators shall be at least duplexed. under normal
operation, airflow shall be divided equally through out each device ? True or
False.
Answer: False
◍ except for valves in zone valve boxes, all valves shall be located in secured
areas such as locked pipe chases, or be __________..
Answer: latched or locked in operation position
◍ med air shall be sampled at a what
N. P.
S. valved sample port downstream of the final line regulator ? A) 3/4, B)
1/2, C) 1/4, or D) 1/8.
Answer: C) 1/4
◍ medical gas Central Supply systems are NOT permitted to be located
QUESTIONS WITH ANSWERS GRADED
A+
◍ When is the initial pressure test conducted, by a medical gas installer, on a
nitrous oxide system?.
Answer: After blowdown of a distribution piping
◍ In those portions of systems intended to handle oxygen at pressures greater
than 350 psi the interconnecting hose shall NOT contain ________
materials?.
Answer: Polymeric
◍ Medical air compressor systems shall have a pressure relief valve set at what
percent above line pressure? A) 20, B) 40, C) 30, D) 50.
Answer: D) 50 percent
◍ In a Category 1 Dental and Gas Vacuum Piping system, which of the
following is an NFPA 99 requirement for the labeling of pipes?.
Answer: Color coding & non-standard pressure
◍ Which of the following treatments shall be performed before brazing cut
ends of a tube to be installed in a medical gas piping system?.
Answer: Cut ends shall be rolled smooth or deburred
◍ Medical air supply systems shall require to? A) meet the requirements of
medical air
U. S.
P. B) have no detectable liquid hydrocarbons, C) Have less than 25 ppm
gaseous hydrocarbon ,.... D) all of the above.
Answer: D), all of the above
,◍ Medical air sources shall be used only for? A) human respiratory
applications B) or operating devices C), instrument air or D) all of the
above.
Answer: A) human respiratory applications
◍ Manifolds for gas cylinders shall actuate a(an) _______ signal and shall
activate an indicator at all _______ alarm panels to indicate when or just
before changeover from one header to the other..
Answer: Local, master
◍ In a non-anesthetizing area, on which side of a zone valve shall the
pressure/vacuum sensor be located?.
Answer: Station outlet/inlet
◍ Liquid ring and permanently sealed bearing compressors shall separate the
oil containing section from the compression chamber by at least two seals?
true or false.
Answer: False
◍ After coolers, where required, shall be provided with individual? A) shutoff
valve B) flexible connectors C) condensate trap or D) pressure indicator.
Answer: C) condensate trap
◍ What is the purpose of using an oxygen analyzer during the piping purge
prior to brazing?.
Answer: Assure that all ambient air has been removed from the pipeline
◍ A medical gas master or area alarm panel shall be set to actuate a(an) _____
indicator when the communication with an alarm-initiating device is
disconnected..
Answer: Audible and visual
◍ When an EOSC becomes the temporary supply source, a facility will
monitor the system by use of which of the following?.
Answer: Providing four connection points to both master alarms
◍ Receivers for medical air shall be equipped with. A) relief valve B)
, automatic and manual drains C) sight glass or D) all of the above.
Answer: D) all of the above
◍ Which of the following conditions must be met where medical gas and
vacuum systems are installed by non-certified personnel?.
Answer: installation by anyone other than 6010 certified personnel is NOT
permitted
◍ Medical air filters shall be located immediately upstream of the? A) after
coolers B) receiver C) pressure indicator or D) final line regulator.
Answer: D) final line regulator
◍ Which of the following systems shall NOT be permitted to be located in an
outdoor enclosure?.
Answer: Medical air compressor supply sources
◍ Metallic flexible joints are being used in the pipeline for vibration control.
Which of the following is NOT required of such joints?.
Answer: suitable for service at 150 psig or above
◍ who shall witness the installer-performed standing vacuum test?.
Answer: the authority having jurisdiction, or its designee
◍ Medical air filter she'll be sized for 100% of this system peak calculated
demand and be rated for a minimum of what efficiency at what micron or
greater? A) 95% @ .5, B) 98%@1, C) 100% @.1, or D) none of the above.
Answer: B) 98% @ 1
◍ Medical air compressors that are designed to separate the oil containing
section from the compression chamber shall be provided with a containing
filter with a what? A) shut off valve B) pressure indicator C) element change
indicator, or D) all of the above.
Answer: C) element change indicator
◍ the medical air compressor intake shall be located a minimum of how many
feet from any exhaust or plumbing vents?.
Answer: 25 feet
, ◍ med air receivers shall be provided with the proper valve that allow the
receiver to be what during service? A) painter B) pressurized C) on line or
D) bypassed.
Answer: D) bypassed
◍ the gas produced by evaporation from the secondary header in a cryogenic
liquid cylinder system shall enter the supply system ________ of the final
line regulator..
Answer: upstream
◍ with the approval of the Authority Having Jurisdiction, in which areas shall
the zone valves be permitted to be secured to prevent inappropriate access?.
Answer: pediatric
◍ factory installed inlet tubes on station outlets shall be NOT less than
__________with 0.3 inch minimum inside diameter..
Answer: NPS 1/4, 3/8 in. O.D.
◍ which of these operations would not breach the vacuum system?.
Answer: testing a system component with a leak detector solution
◍ Dryers, filters and regulators shall be at least duplexed. under normal
operation, airflow shall be divided equally through out each device ? True or
False.
Answer: False
◍ except for valves in zone valve boxes, all valves shall be located in secured
areas such as locked pipe chases, or be __________..
Answer: latched or locked in operation position
◍ med air shall be sampled at a what
N. P.
S. valved sample port downstream of the final line regulator ? A) 3/4, B)
1/2, C) 1/4, or D) 1/8.
Answer: C) 1/4
◍ medical gas Central Supply systems are NOT permitted to be located
