1|Page
MEDICAL GAS INSTALLERS FINAL EXAM AND
PRACTICE EXAM QUESTIONS 2025 NEWEST ACTUAL
EXAM COMPLETE 400 QUESTIONS WITH DETAILED
VERIFIED ANSWERS (100% CORRECT ANSWERS)
/ALREADY GRADED A+/ BRAND NEW!!!
An existing system that is not in strict compliance with the
provisions of this code shall be permitted to be continued
in use as long as the _ has determined that such use does
not constitute a distinct hazard to life. A) architect B)
authority having jurisdiction C) engineer D) nursing staff -
Answer-B) authority having jurisdiction
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 - Answer-
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 - Answer-B) 125
,2|Page
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 -
Answer-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 -
Answer-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 - Answer-
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 - Answer-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
,3|Page
air within the enclosure? A) base B) corner) C) middle D)
top - Answer-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 - Answer-C) parallel
All pressure relief valves shall be made of brass, bronze,
or _? A) carbon steel B) cast iron C) copper D) stainless
steel - Answer-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 - Answer-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 - Answer-B) any manner that will
distinguish them from the medical gas pipeline
, 4|Page
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 - Answer-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 - Answer-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 - Answer-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 - Answer-
C) local
When multiple buildings are served from a single
cryogenic liquid oxygen source, it is required to place the
MEDICAL GAS INSTALLERS FINAL EXAM AND
PRACTICE EXAM QUESTIONS 2025 NEWEST ACTUAL
EXAM COMPLETE 400 QUESTIONS WITH DETAILED
VERIFIED ANSWERS (100% CORRECT ANSWERS)
/ALREADY GRADED A+/ BRAND NEW!!!
An existing system that is not in strict compliance with the
provisions of this code shall be permitted to be continued
in use as long as the _ has determined that such use does
not constitute a distinct hazard to life. A) architect B)
authority having jurisdiction C) engineer D) nursing staff -
Answer-B) authority having jurisdiction
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 - Answer-
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 - Answer-B) 125
,2|Page
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 -
Answer-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 -
Answer-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 - Answer-
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 - Answer-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
,3|Page
air within the enclosure? A) base B) corner) C) middle D)
top - Answer-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 - Answer-C) parallel
All pressure relief valves shall be made of brass, bronze,
or _? A) carbon steel B) cast iron C) copper D) stainless
steel - Answer-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 - Answer-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 - Answer-B) any manner that will
distinguish them from the medical gas pipeline
, 4|Page
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 - Answer-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 - Answer-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 - Answer-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 - Answer-
C) local
When multiple buildings are served from a single
cryogenic liquid oxygen source, it is required to place the
