MED GAS REFRESHER EXAM QUESTIONS AND VERIFIED
ANSWERS GRADED A+ LATEST UPDATE 2026/2027
Cylinders in use and in storage shall be prevented from
reaching temperatures in excess of ____________.
A.120ºf
B.125ºf
C.130ºf
D.150ºf
B. 125ºf
Which of these is a requirement for each station inlet?
A.A main vacuum line
B.A primary valve
C.A secondary demand valve
D.A primary optional in-line
B. A primary valve
Which of these operations would NOT breach the vacuum
system?
A.Addition of a system component
B.Removal of system component
C.Replacement of system component with an identical one
D.Testing a system component with a leak detecting solution
,D. Testing a system component with a leak detecting solution
Mock Exam Diagram 1.pdf Refer to Drawing #1. Items 2 and 12
would be best described as ________.
A.zone valve sensors
B.pressure indicators
C.area alarm sensors
D.master alarm sensors
C. Area alarm sensors
After completion of all installer-performed tests which of the
following methods shall be used to determine that no cross-
connection exists?
A.Individual pressurization
B.Pressure differential
C.Both A and B
D.Either A or B
A. Individual pressurization
The medical-surgical vacuum exhaust shall be turned down
and screened. The screening shall be fabricated using what
type of material?
A.steel mesh
B.steel wire
,C.any non-corroding material
D.all of the above
C. Any non-corroding material
A medical gas master or area alarm panel should be set to
actuate a(an) __________ indicator when the communication
with an alarm-initiating device is disconnected.
A.Audible
B.Audible and visual
C.High and low
D.Visual
B. Audible and visual
Liquid ring compressors, service water and seal water shall
be treated to control_________.
A.waterborne pathogens
B.chlorine
C.hyper chlorination
D.all of the above
D. All of the above
All valves except zone valve box assemblies shall be
__________.
, A.located in a secure area
B.locked or latched in the operating position
C.labeled indicating contents and location served
D.all of the above
D. All of the above
For medical-surgical vacuum systems, piping shall be hard-
drawn, seamless copper tube type _________.
A.ASTM B88
B.ASTM B819
C.ASTM B 280
D.any of the above
D. Any of the above
NFPA 99 specifies that the medical gas piping system shall be
protected against all EXCEPT which of the following?
A.Physical damage
B.Corrosion
C.Freezing
D.Combustible liquids
D. Combustible liquids
ANSWERS GRADED A+ LATEST UPDATE 2026/2027
Cylinders in use and in storage shall be prevented from
reaching temperatures in excess of ____________.
A.120ºf
B.125ºf
C.130ºf
D.150ºf
B. 125ºf
Which of these is a requirement for each station inlet?
A.A main vacuum line
B.A primary valve
C.A secondary demand valve
D.A primary optional in-line
B. A primary valve
Which of these operations would NOT breach the vacuum
system?
A.Addition of a system component
B.Removal of system component
C.Replacement of system component with an identical one
D.Testing a system component with a leak detecting solution
,D. Testing a system component with a leak detecting solution
Mock Exam Diagram 1.pdf Refer to Drawing #1. Items 2 and 12
would be best described as ________.
A.zone valve sensors
B.pressure indicators
C.area alarm sensors
D.master alarm sensors
C. Area alarm sensors
After completion of all installer-performed tests which of the
following methods shall be used to determine that no cross-
connection exists?
A.Individual pressurization
B.Pressure differential
C.Both A and B
D.Either A or B
A. Individual pressurization
The medical-surgical vacuum exhaust shall be turned down
and screened. The screening shall be fabricated using what
type of material?
A.steel mesh
B.steel wire
,C.any non-corroding material
D.all of the above
C. Any non-corroding material
A medical gas master or area alarm panel should be set to
actuate a(an) __________ indicator when the communication
with an alarm-initiating device is disconnected.
A.Audible
B.Audible and visual
C.High and low
D.Visual
B. Audible and visual
Liquid ring compressors, service water and seal water shall
be treated to control_________.
A.waterborne pathogens
B.chlorine
C.hyper chlorination
D.all of the above
D. All of the above
All valves except zone valve box assemblies shall be
__________.
, A.located in a secure area
B.locked or latched in the operating position
C.labeled indicating contents and location served
D.all of the above
D. All of the above
For medical-surgical vacuum systems, piping shall be hard-
drawn, seamless copper tube type _________.
A.ASTM B88
B.ASTM B819
C.ASTM B 280
D.any of the above
D. Any of the above
NFPA 99 specifies that the medical gas piping system shall be
protected against all EXCEPT which of the following?
A.Physical damage
B.Corrosion
C.Freezing
D.Combustible liquids
D. Combustible liquids
