MEDICAL GAS 6010 INSTALLERS PRACTICE TEST
Question and Answer 2026 | Comprehensive
Study Pack with Detailed Rationales | A+
Verified
• Cylinder and cryogenic liquid container outlet connections shall be designed as to
render the attachment point _ when removal of the outlet connection is attempted. A)
reusable B) unusable C) unsuitable D) universal -✓✓B) unusable
• Cylinders in use and in storage shall be prevented from reaching temperatures in
excess of _ *F. A) 120 B) 125 C) 130 D) 135 -✓✓B) 125
• Nitrous oxide and carbon dioxide using cylinders or portable containers shall be
prevented from reaching temperatures lower than _ *F A) 130 B)125 C) 20 D) -20 -
✓✓C)20
• Which of the following systems shall not be permitted to be located in an outdoor
enclosure? A) bulk cryogenic liquid cylinders B) manifolds for gas cylinders C) manifolds
for cryogenic liquid containers D) medical air sources -✓✓D) medical air sources
• Indoor locations for oxygen, nitrous oxide, and mixtures of these gases shall not
communicate with any of the following except _? A) area with open flames B)
designated storage area C) engines D) kitchens -✓✓B) designated storage area
• Locations for central supply systems shall have _ devices protected from physical
damage? A) electrical B) pressure indicating C) regulating D) relief -✓✓A) electrical
• Outdoor locations surrounded by impermeable walls, except fire barrier walls, shall
have protected ventilation openings at the _ of each wall to allow free circulation of air
within the enclosure? A) base B) corner) C) middle D) top -✓✓A) base
• All positive pressure supply systems shall be provided with duplex line pressure
regulators piped in _? A) circuit B) loop C) parallel D) series -✓✓C) parallel
• All pressure relief valves shall be made of brass, bronze, or _? A) carbon steel B) cast
iron C) copper D) stainless steel -✓✓D) stainless steel
• Central supply systems for positive pressure gases shall have one or more relief
valves, the valves shall have a relief setting that is _% above normal working operating
pressure? A) 30 B) 40 C) 50 D) 60 -✓✓C) 50
,• When vented to the outside, relief valve vent lines shall be labeled in which way? A)
adhesive markers B) any manner that will distinguish them from the medical gas
pipeline C) stenciling D) stickers -✓✓B) any manner that will distinguish them from the
medical gas pipeline
• An auxiliary source connection shall consist of all of the following except? A)
removable plug or cap B) tee C) valve D) visual pressure indicator -✓✓D) visual
pressure indicator
• In central supply systems using gas or liquid cylinders, each header shall have a _ to
prevent debris from entering the manifold controls? A) check valve B) filter C) monitor
D) relief valve -✓✓B) filter
• Manifolds for gas cylinders shall consist of two equal headers, each with enough
cylinders for an average day's supply, but not fewer than _ connections? A) 5 B) 4 C) 3
D) 2 -✓✓D) 2
• Manifolds for gas cylinders shall have a(n) _ signal that visibly indicates the operating
status of the equipment and shall activate an indicator at all master alarm panels when
or just before changeover from one header to the other takes place? A) area B) master
C) local D) zone -✓✓C) local
• When multiple buildings are served from a single cryogenic liquid oxygen source, it is
required to place the emergency oxygen supply connection in _ ? A) each building
served B) the building closest to the source C) the largest building served D) the main
building only -✓✓A) each building served
• The minimum clearance around EOSC for a temporary source of supply is _ ft? A) 2
B) 3 C) 5 D) 6 -✓✓B) 3
• A(n) _ emergency reserve system can be substituted for the EOSC? A) auxiliary B)
backup C) in-building D) micro-bulk -✓✓C) in-building
• The quality medical air shall comply with all of the following standards except? A) be
filtered to .01 microns B) have less than 25 ppm gaseous hydrocarbons C) have no
detectable hydrocarbons D) meet the requirements of medical air USP -✓✓A) be
filtered to .01 microns
• Medical air sources shall only be used for _ ? A) air-operating devices B) human
respiratory applications C) instrument air D) WAGD -✓✓B) human respiratory
applications
• Medical air compressor systems shall have a pressure relief valve set at _ percent
above line pressure? A) 20 B) 30 C) 40 D) 50 -✓✓D) 50
, • Medical air compressor systems shall have an automatic means to prevent _ from all
on-cycle compressors through all off-cycle compressors? A) backfire B) backflow C)
back pressure D) backup -✓✓B) backflow
• Reciprocating compressors that employ the use of oil can be used for medical air as
long as the oil-containing section is separated from the compression chamber by at
least _ seals creating an area open to the atmosphere? A) 2 B) 3 C) 4 D) 5 -✓✓A) 2
• When liquid ring compressors are being used to service water and seal water shall be
treated to control waterborne pathogens and chlorine (from _) from entering the medical
air? A) deionization B) hyperchlorination C) hypochlorination D) ionization -✓✓C)
hypochlorination
• Aftercoolers shall be provided with individual _ ? A) condensate traps B) flexible
connectors C) pressure indicators D) temperature indicators -✓✓A) condensate traps
• Recievers for medical air shall not be equipped with _ ? A) a sight glass B) a
temperature indicator C) automatic and manual drains D) relief valves -✓✓B) a
temperature indicator
• Medical air filters shall be located immediately upstream (source side) of the _ ? A)
aftercoolers B) final line regulator C) pressure indicator D) reciever -✓✓B) final line
regulator
• Medical air filters shall be sized for 100% of the system peak calculated demand and
be rates for a minimum of 98% efficiency at _ micron or greater? A) .01 B) 1 C) 5 D) 10
-✓✓B) 1
• Medical air recievers shall be provided with proper valves that allow the receiver to be
_ during service without shutting down the supply of medical air? A) bypassed B) filled
C) online D) pressurized -✓✓A) bypassed
• In a medical air supply system dryers, filters, and regulators shall be _ ? A) at least
duplexed B) at least simplexed C) downstream of the source valve D) upstream of the
aftercoolers -✓✓A) at least duplexed
• Medical air shall be sampled at 1/4" NPS valved sample port upstream of the _ ? A)
dew point monitor B) carbon monoxide monitor C) final line regulator D) source valve -
✓✓D) source valve
• Where medical air piping systems at different operating pressures are required, the
piping shall separate after the _ ? A) filters B) final line regulators C) relief valve D)
source valve -✓✓A) filters
Question and Answer 2026 | Comprehensive
Study Pack with Detailed Rationales | A+
Verified
• Cylinder and cryogenic liquid container outlet connections shall be designed as to
render the attachment point _ when removal of the outlet connection is attempted. A)
reusable B) unusable C) unsuitable D) universal -✓✓B) unusable
• Cylinders in use and in storage shall be prevented from reaching temperatures in
excess of _ *F. A) 120 B) 125 C) 130 D) 135 -✓✓B) 125
• Nitrous oxide and carbon dioxide using cylinders or portable containers shall be
prevented from reaching temperatures lower than _ *F A) 130 B)125 C) 20 D) -20 -
✓✓C)20
• Which of the following systems shall not be permitted to be located in an outdoor
enclosure? A) bulk cryogenic liquid cylinders B) manifolds for gas cylinders C) manifolds
for cryogenic liquid containers D) medical air sources -✓✓D) medical air sources
• Indoor locations for oxygen, nitrous oxide, and mixtures of these gases shall not
communicate with any of the following except _? A) area with open flames B)
designated storage area C) engines D) kitchens -✓✓B) designated storage area
• Locations for central supply systems shall have _ devices protected from physical
damage? A) electrical B) pressure indicating C) regulating D) relief -✓✓A) electrical
• Outdoor locations surrounded by impermeable walls, except fire barrier walls, shall
have protected ventilation openings at the _ of each wall to allow free circulation of air
within the enclosure? A) base B) corner) C) middle D) top -✓✓A) base
• All positive pressure supply systems shall be provided with duplex line pressure
regulators piped in _? A) circuit B) loop C) parallel D) series -✓✓C) parallel
• All pressure relief valves shall be made of brass, bronze, or _? A) carbon steel B) cast
iron C) copper D) stainless steel -✓✓D) stainless steel
• Central supply systems for positive pressure gases shall have one or more relief
valves, the valves shall have a relief setting that is _% above normal working operating
pressure? A) 30 B) 40 C) 50 D) 60 -✓✓C) 50
,• When vented to the outside, relief valve vent lines shall be labeled in which way? A)
adhesive markers B) any manner that will distinguish them from the medical gas
pipeline C) stenciling D) stickers -✓✓B) any manner that will distinguish them from the
medical gas pipeline
• An auxiliary source connection shall consist of all of the following except? A)
removable plug or cap B) tee C) valve D) visual pressure indicator -✓✓D) visual
pressure indicator
• In central supply systems using gas or liquid cylinders, each header shall have a _ to
prevent debris from entering the manifold controls? A) check valve B) filter C) monitor
D) relief valve -✓✓B) filter
• Manifolds for gas cylinders shall consist of two equal headers, each with enough
cylinders for an average day's supply, but not fewer than _ connections? A) 5 B) 4 C) 3
D) 2 -✓✓D) 2
• Manifolds for gas cylinders shall have a(n) _ signal that visibly indicates the operating
status of the equipment and shall activate an indicator at all master alarm panels when
or just before changeover from one header to the other takes place? A) area B) master
C) local D) zone -✓✓C) local
• When multiple buildings are served from a single cryogenic liquid oxygen source, it is
required to place the emergency oxygen supply connection in _ ? A) each building
served B) the building closest to the source C) the largest building served D) the main
building only -✓✓A) each building served
• The minimum clearance around EOSC for a temporary source of supply is _ ft? A) 2
B) 3 C) 5 D) 6 -✓✓B) 3
• A(n) _ emergency reserve system can be substituted for the EOSC? A) auxiliary B)
backup C) in-building D) micro-bulk -✓✓C) in-building
• The quality medical air shall comply with all of the following standards except? A) be
filtered to .01 microns B) have less than 25 ppm gaseous hydrocarbons C) have no
detectable hydrocarbons D) meet the requirements of medical air USP -✓✓A) be
filtered to .01 microns
• Medical air sources shall only be used for _ ? A) air-operating devices B) human
respiratory applications C) instrument air D) WAGD -✓✓B) human respiratory
applications
• Medical air compressor systems shall have a pressure relief valve set at _ percent
above line pressure? A) 20 B) 30 C) 40 D) 50 -✓✓D) 50
, • Medical air compressor systems shall have an automatic means to prevent _ from all
on-cycle compressors through all off-cycle compressors? A) backfire B) backflow C)
back pressure D) backup -✓✓B) backflow
• Reciprocating compressors that employ the use of oil can be used for medical air as
long as the oil-containing section is separated from the compression chamber by at
least _ seals creating an area open to the atmosphere? A) 2 B) 3 C) 4 D) 5 -✓✓A) 2
• When liquid ring compressors are being used to service water and seal water shall be
treated to control waterborne pathogens and chlorine (from _) from entering the medical
air? A) deionization B) hyperchlorination C) hypochlorination D) ionization -✓✓C)
hypochlorination
• Aftercoolers shall be provided with individual _ ? A) condensate traps B) flexible
connectors C) pressure indicators D) temperature indicators -✓✓A) condensate traps
• Recievers for medical air shall not be equipped with _ ? A) a sight glass B) a
temperature indicator C) automatic and manual drains D) relief valves -✓✓B) a
temperature indicator
• Medical air filters shall be located immediately upstream (source side) of the _ ? A)
aftercoolers B) final line regulator C) pressure indicator D) reciever -✓✓B) final line
regulator
• Medical air filters shall be sized for 100% of the system peak calculated demand and
be rates for a minimum of 98% efficiency at _ micron or greater? A) .01 B) 1 C) 5 D) 10
-✓✓B) 1
• Medical air recievers shall be provided with proper valves that allow the receiver to be
_ during service without shutting down the supply of medical air? A) bypassed B) filled
C) online D) pressurized -✓✓A) bypassed
• In a medical air supply system dryers, filters, and regulators shall be _ ? A) at least
duplexed B) at least simplexed C) downstream of the source valve D) upstream of the
aftercoolers -✓✓A) at least duplexed
• Medical air shall be sampled at 1/4" NPS valved sample port upstream of the _ ? A)
dew point monitor B) carbon monoxide monitor C) final line regulator D) source valve -
✓✓D) source valve
• Where medical air piping systems at different operating pressures are required, the
piping shall separate after the _ ? A) filters B) final line regulators C) relief valve D)
source valve -✓✓A) filters
