MEDICAL GAS TEST EXAM
2026/2027 QUESTIONS AND 100%
CORRECT
When is the initial pressure test conducted, by a medical gas installer, on a nitrous
oxide system? - ANSWER-After blow down of a distribution pipeline
In those portions of systems intended to handle oxygen at pressures greater than
350 PSI, the interconnecting hose shall not contain _____ materials? - ANSWER-
Polymeric
In category one dental and gas vacuum piping systems, what is the NFPA 99
requirement for the labeling of pipes? - ANSWER-Color coding
What treatments shall be performed before brazing cut ends of a tube to be installed
in a medical gas piping system? - ANSWER-Cut ends may be be rolled smooth or
deburred
Manifolds for gas cylinders shall actuate a ____ signal and shall activate an indicator
at all ____ alarm panels to indicate when or just before change over from one
header to the other - ANSWER-local, master
In a non-anesthetizing area, on which side of a zoned valve shall the
pressure/vacuum sensor be located? - ANSWER-Station outlet/inlet
What is the purpose of using an oxygen analyzer during the piping purge prior to
brazing? - ANSWER-To assure that all ambient air has been removed from the
pipeline
A medical gas master or area alarm panel should be set to actuate an ____ indicator
when the communication with an alarm initiating device is disconnected. - ANSWER-
Audible and visual
When an EOSC becomes the temporary supply source, a facility will monitor the
system by use of? - ANSWER-Providing four connection points through two master
alarms
What condition must be met where medical gas and vacuum systems are installed
by non certified personnel? - ANSWER-Installation by anyone other than 6010
certified personnel is not permitted
Which of the following systems shall not permitted to be located in an outdoor
inclosure?
A. Bulk cryogenic liquid system
B. Manifolds for cryogenic liquid cylinders
, C. Manifolds for gas cylinders with or without reserve
D. Medical air compressors supply sources - ANSWER-medical air compressors
supply sources
Metallic flexible joints are being used in the pipeline for vibration control. What is
NOT, required for such a joints?
A) able tho withstand 1000 degrees
B) provide brazing extensions to allow brazing in to the pipe line.
C) received on the job site with certification of cleanliness
D) Suitable for service at 150, p.s.i. or above - ANSWER-Suitable for service at 150,
p.s.i. or above
Who shall witness the installer perform both standing pressure test and standing
vacuum test?
A) installation contractor superintendent.
B) Medical Gas verifier
C) The authority having jurisdiction or its designee
D) a witness is not required - ANSWER-The authority having jurisdiction or its
designee
The medical air compressor intakes shall be located a minimum of how many feet
from any exhaust or plumbing vents?
A)10 feet
B) 12 feet
C) 15 feet
D) 25 feet - ANSWER-25 feet
The gas produced by evaporation from the secondary header in a cryogenic liquid
cylinder system shall enter the supply system ____ of the final line regulator. -
ANSWER-Upstream
With the approval of the authority having jurisdiction, a zone valve shall be permitted
to be secured to prevent inappropriate access in ____ areas?
A) anesthetizing
B) critical care
C) maternity
D) psychiatric or pediatric - ANSWER-psychiatric or pediatric
Factory installed inlet tubes on station outlets shall be not less than ____ with 0.3
inch inside diameter. - ANSWER-NPS 1/4 in, 3/8 in. O.D.
Which of these operations would not reach the vacuum system?
A. Addition of a system component
B. Removal of a system component
C. Replacement of system component with identical one
D. Testing a system component with a leak detector solution - ANSWER-Testing a
system component with a leak detector solution
2026/2027 QUESTIONS AND 100%
CORRECT
When is the initial pressure test conducted, by a medical gas installer, on a nitrous
oxide system? - ANSWER-After blow down of a distribution pipeline
In those portions of systems intended to handle oxygen at pressures greater than
350 PSI, the interconnecting hose shall not contain _____ materials? - ANSWER-
Polymeric
In category one dental and gas vacuum piping systems, what is the NFPA 99
requirement for the labeling of pipes? - ANSWER-Color coding
What treatments shall be performed before brazing cut ends of a tube to be installed
in a medical gas piping system? - ANSWER-Cut ends may be be rolled smooth or
deburred
Manifolds for gas cylinders shall actuate a ____ signal and shall activate an indicator
at all ____ alarm panels to indicate when or just before change over from one
header to the other - ANSWER-local, master
In a non-anesthetizing area, on which side of a zoned valve shall the
pressure/vacuum sensor be located? - ANSWER-Station outlet/inlet
What is the purpose of using an oxygen analyzer during the piping purge prior to
brazing? - ANSWER-To assure that all ambient air has been removed from the
pipeline
A medical gas master or area alarm panel should be set to actuate an ____ indicator
when the communication with an alarm initiating device is disconnected. - ANSWER-
Audible and visual
When an EOSC becomes the temporary supply source, a facility will monitor the
system by use of? - ANSWER-Providing four connection points through two master
alarms
What condition must be met where medical gas and vacuum systems are installed
by non certified personnel? - ANSWER-Installation by anyone other than 6010
certified personnel is not permitted
Which of the following systems shall not permitted to be located in an outdoor
inclosure?
A. Bulk cryogenic liquid system
B. Manifolds for cryogenic liquid cylinders
, C. Manifolds for gas cylinders with or without reserve
D. Medical air compressors supply sources - ANSWER-medical air compressors
supply sources
Metallic flexible joints are being used in the pipeline for vibration control. What is
NOT, required for such a joints?
A) able tho withstand 1000 degrees
B) provide brazing extensions to allow brazing in to the pipe line.
C) received on the job site with certification of cleanliness
D) Suitable for service at 150, p.s.i. or above - ANSWER-Suitable for service at 150,
p.s.i. or above
Who shall witness the installer perform both standing pressure test and standing
vacuum test?
A) installation contractor superintendent.
B) Medical Gas verifier
C) The authority having jurisdiction or its designee
D) a witness is not required - ANSWER-The authority having jurisdiction or its
designee
The medical air compressor intakes shall be located a minimum of how many feet
from any exhaust or plumbing vents?
A)10 feet
B) 12 feet
C) 15 feet
D) 25 feet - ANSWER-25 feet
The gas produced by evaporation from the secondary header in a cryogenic liquid
cylinder system shall enter the supply system ____ of the final line regulator. -
ANSWER-Upstream
With the approval of the authority having jurisdiction, a zone valve shall be permitted
to be secured to prevent inappropriate access in ____ areas?
A) anesthetizing
B) critical care
C) maternity
D) psychiatric or pediatric - ANSWER-psychiatric or pediatric
Factory installed inlet tubes on station outlets shall be not less than ____ with 0.3
inch inside diameter. - ANSWER-NPS 1/4 in, 3/8 in. O.D.
Which of these operations would not reach the vacuum system?
A. Addition of a system component
B. Removal of a system component
C. Replacement of system component with identical one
D. Testing a system component with a leak detector solution - ANSWER-Testing a
system component with a leak detector solution
