Medical Gas 6010 Installers Test
Questions and Answers 2026
1. 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 --*correct answer*--B)
authority having jurisdiction
2. 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 --*correct answer*--B) unusable
3. Cylinders in use and in storage shall be prevented from reaching
temperatures in excess of _ *F. A) 120 B) 125 C) 130 D) 135 --
*correct answer*--B) 125
4. 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 --*correct answer*--C)20
P a g e 1 | 65
,5. 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 --*correct
answer*--D) medical air sources
6. 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 --*correct answer*--B) designated storage area
7. Locations for central supply systems shall have _ devices
protected from physical damage? A) electrical B) pressure
indicating C) regulating D) relief --*correct answer*--A)
electrical
8. 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 --*correct answer*--A) base
9. All positive pressure supply systems shall be provided with
duplex line pressure regulators piped in _? A) circuit B) loop C)
parallel D) series --*correct answer*--C) parallel
P a g e 2 | 65
,10. All pressure relief valves shall be made of brass, bronze, or
_? A) carbon steel B) cast iron C) copper D) stainless steel --
*correct answer*--D) stainless steel
11. 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 --*correct answer*--C) 50
12. 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 --*correct answer*--B) any manner that will
distinguish them from the medical gas pipeline
13.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 --*correct answer*--D) visual pressure
indicator
14. 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 --*correct answer*--B) filter
P a g e 3 | 65
, 15.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 --*correct
answer*--D) 2
16. 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 --*correct answer*--C) local
17.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 --*correct answer*--A) each building
served
18. The minimum clearance around EOSC for a temporary
source of supply is _ ft? A) 2 B) 3 C) 5 D) 6 --*correct answer*--
B) 3
P a g e 4 | 65
Questions and Answers 2026
1. 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 --*correct answer*--B)
authority having jurisdiction
2. 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 --*correct answer*--B) unusable
3. Cylinders in use and in storage shall be prevented from reaching
temperatures in excess of _ *F. A) 120 B) 125 C) 130 D) 135 --
*correct answer*--B) 125
4. 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 --*correct answer*--C)20
P a g e 1 | 65
,5. 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 --*correct
answer*--D) medical air sources
6. 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 --*correct answer*--B) designated storage area
7. Locations for central supply systems shall have _ devices
protected from physical damage? A) electrical B) pressure
indicating C) regulating D) relief --*correct answer*--A)
electrical
8. 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 --*correct answer*--A) base
9. All positive pressure supply systems shall be provided with
duplex line pressure regulators piped in _? A) circuit B) loop C)
parallel D) series --*correct answer*--C) parallel
P a g e 2 | 65
,10. All pressure relief valves shall be made of brass, bronze, or
_? A) carbon steel B) cast iron C) copper D) stainless steel --
*correct answer*--D) stainless steel
11. 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 --*correct answer*--C) 50
12. 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 --*correct answer*--B) any manner that will
distinguish them from the medical gas pipeline
13.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 --*correct answer*--D) visual pressure
indicator
14. 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 --*correct answer*--B) filter
P a g e 3 | 65
, 15.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 --*correct
answer*--D) 2
16. 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 --*correct answer*--C) local
17.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 --*correct answer*--A) each building
served
18. The minimum clearance around EOSC for a temporary
source of supply is _ ft? A) 2 B) 3 C) 5 D) 6 --*correct answer*--
B) 3
P a g e 4 | 65
