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MED GAS TEST EXAM WITH CORRECT ACTUAL
QUESTIONS AND CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+ 2026
When is the initial pressure test conducted, by a Medical Gas installer,
on a nitrous oxide system?
A. after blowdown of a distribution piping
B. After installation of alarm sensors
C. Before blow down of distribution piping
D. Before installation of station rough-in-assemblies ......ANSWER......A.
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.
A. Brass
B. Copper
C. Polymeric
D. Stainless Steel ......ANSWER......C. Polymeric
In a Category 1 Dental and Gas Vacuum Piping system, which of the
following is an NFPA 99 requirement for the labeling of pipes?
A. Color coding
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B. Fixed label width
C. Label shall wrap completely around the pipe
D. Reflective labe ......ANSWER......A. Color coding
Which of the following treatments shall be performed before brazing
cut ends of a tube to be installed in a medical gas piping system?
A. An argon gas purge shall be performed
B. Cut ends shall be rolled smooth or deburred.
C. Extensions shall be added for brazing.
D. Treatment is NOT required, they may be brazed "as is"
......ANSWER......B. Cut ends shall be rolled smooth or deburred.
Manifolds for gas cylinders shall actuate a(n)_______signal and shall
activate an indicator at all_______alarm panels to indicate when or just
before changeover from one header to the other.
A. Area, master
B. Local, master
C. Master, area
D. Master, local ......ANSWER......B. Local, master
In a non-anesthetizing area, on which side of a zone valve shall the
pressure/vacuum sensor be located?
A. Station outlet/inlet
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B. Source side
C. Upstream side
D. NFPA 99 does not specify a requirement ......ANSWER......A. Station
outlet/inlet
What is the purpose of using an oxygen analyzer during the piping
purge prior to brazing?
A. Assure that all ambient air has been removed from the pipeline.
B. Maintain a nitrogen atmosphere of at least 95% within the piping
system.
C. Provide continuous monitoring during the verification test.
D. Reduce the oxygen concentration below 5% before brazing
......ANSWER......A. 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(n)_________indicator when the communication with an alarm-
initiation device is disconnected.
A. Audible
B. Audible and visual
C. Service
D. Visual ......ANSWER......B. Audible and visual
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The tool shown below allows the installer to mechanically limit the
makeup depth of the fitting to be brazed. Under what conditions is this
method permitted for the installation of medical gas piping?
A. Only on final line connections
B. Only on vacuum systems
C. Where a BCuP 5 brazing rod is used
D. Where socket depths confirm top ANSI/ASME ......ANSWER......D.
Where socket depths confirm top ANSI/ASME
Refer to Diagram II, Medical Air Intake Location. Choose the minimum
height (feet) required from ground level to the location at the capital
letter "A" (Diagram is not to scale)
A. 10 feet
B. 20 feet
C. 25 feet
D. There is not a stated requirement in NFPA 95 ......ANSWER......B. 20
feet
When an EOSC becomes the temporary supply source, a facility will
monitor the system by use of which of the following?
A. Having personnel on standby during that time period
B. Installing additional local alarms
C. Providing four connection points to both master alarms
MED GAS TEST EXAM WITH CORRECT ACTUAL
QUESTIONS AND CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+ 2026
When is the initial pressure test conducted, by a Medical Gas installer,
on a nitrous oxide system?
A. after blowdown of a distribution piping
B. After installation of alarm sensors
C. Before blow down of distribution piping
D. Before installation of station rough-in-assemblies ......ANSWER......A.
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.
A. Brass
B. Copper
C. Polymeric
D. Stainless Steel ......ANSWER......C. Polymeric
In a Category 1 Dental and Gas Vacuum Piping system, which of the
following is an NFPA 99 requirement for the labeling of pipes?
A. Color coding
,2|Page
B. Fixed label width
C. Label shall wrap completely around the pipe
D. Reflective labe ......ANSWER......A. Color coding
Which of the following treatments shall be performed before brazing
cut ends of a tube to be installed in a medical gas piping system?
A. An argon gas purge shall be performed
B. Cut ends shall be rolled smooth or deburred.
C. Extensions shall be added for brazing.
D. Treatment is NOT required, they may be brazed "as is"
......ANSWER......B. Cut ends shall be rolled smooth or deburred.
Manifolds for gas cylinders shall actuate a(n)_______signal and shall
activate an indicator at all_______alarm panels to indicate when or just
before changeover from one header to the other.
A. Area, master
B. Local, master
C. Master, area
D. Master, local ......ANSWER......B. Local, master
In a non-anesthetizing area, on which side of a zone valve shall the
pressure/vacuum sensor be located?
A. Station outlet/inlet
,3|Page
B. Source side
C. Upstream side
D. NFPA 99 does not specify a requirement ......ANSWER......A. Station
outlet/inlet
What is the purpose of using an oxygen analyzer during the piping
purge prior to brazing?
A. Assure that all ambient air has been removed from the pipeline.
B. Maintain a nitrogen atmosphere of at least 95% within the piping
system.
C. Provide continuous monitoring during the verification test.
D. Reduce the oxygen concentration below 5% before brazing
......ANSWER......A. 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(n)_________indicator when the communication with an alarm-
initiation device is disconnected.
A. Audible
B. Audible and visual
C. Service
D. Visual ......ANSWER......B. Audible and visual
, 4|Page
The tool shown below allows the installer to mechanically limit the
makeup depth of the fitting to be brazed. Under what conditions is this
method permitted for the installation of medical gas piping?
A. Only on final line connections
B. Only on vacuum systems
C. Where a BCuP 5 brazing rod is used
D. Where socket depths confirm top ANSI/ASME ......ANSWER......D.
Where socket depths confirm top ANSI/ASME
Refer to Diagram II, Medical Air Intake Location. Choose the minimum
height (feet) required from ground level to the location at the capital
letter "A" (Diagram is not to scale)
A. 10 feet
B. 20 feet
C. 25 feet
D. There is not a stated requirement in NFPA 95 ......ANSWER......B. 20
feet
When an EOSC becomes the temporary supply source, a facility will
monitor the system by use of which of the following?
A. Having personnel on standby during that time period
B. Installing additional local alarms
C. Providing four connection points to both master alarms
