MED GAS STUDY GUIDE EXAM,250
QUESTIONS AND ALL ACTUAL ANSWERS
2026 | VERIFIED & UPDATE
1. In those portions of systems intended to handle oxygen at pressures
greater than 350 psi the interconnecting hose shall NOT contain ________
materials? - ANS.... –Polymeric
2. When is the initial pressure test conducted, by a medical gas installer, on a
nitrous oxide system? - ANS.... -After blowdown of a distribution piping
3. In a Category 1 Dental and Gas Vacuum Piping system, which of the
following is an NFPA 99 requirement for the labeling of pipes? - ANS.... -
Color coding & non-standard pressure
4. Which of the following treatments shall be performed before brazing cut
ends of a tube to be installed in a medical gas piping system? - ANS.... -Cut
ends shall be rolled smooth or deburred
5. Manifolds for gas cylinders shall actuate a(an) _______ signal and shall
activate an indicator at all _______ alarm panels to indicate when or just
before changeover from one header to the other. - ANS.... -Local, master
6. In a non-anesthetizing area, on which side of a zone valve shall the
pressure/vacuum sensor be located? - ANS.... -Station outlet/inlet
,7. What is the purpose of using an oxygen analyzer during the piping purge
prior to brazing? - ANS.... -Assure that all ambient air has been removed
from the pipeline
8. A medical gas master or area alarm panel shall be set to actuate a(an)
_____ indicator when the communication with an alarm-initiating device is
disconnected. - ANS.... -Audible and visual
9. When an EOSC becomes the temporary supply source, a facility will
monitor the system by use of which of the following? - ANS.... -Providing
four connection points to both master alarms
10.Which of the following conditions must be met where medical gas and
vacuum systems are installed by non-certified personnel? - ANS.... -
installation by anyone other than 6010 certified personnel is NOT permitted
11.Which of the following systems shall NOT be permitted to be located in an
outdoor enclosure? - ANS.... -Medical air compressor supply sources
12.Metallic flexible joints are being used in the pipeline for vibration control.
Which of the following is NOT required of such joints? - ANS.... -suitable for
service at 150 psig or above
13.Who shall witness the installer-performed standing vacuum test? - ANS.... -
the authority having jurisdiction, or its designee
14.The medical air compressor intake shall be located a minimum of how
many feet from any exhaust or plumbing vents? - ANS.... -25 feet
,15.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. - ANS.... -upstream
16.With the approval of the Authority Having Jurisdiction, in which areas shall
the zone valves be permitted to be secured to prevent inappropriate
access? - ANS.... -pediatric
17.Factory installed inlet tubes on station outlets shall be NOT less than
__________with 0.3 inch minimum inside diameter. - ANS.... -NPS 1/4, 3/8
in. O.D.
18.Which of these operations would not breach the vacuum system? - ANS.... -
testing a system component with a leak detector solution
19.Except for valves in zone valve boxes, all valves shall be located in secured
areas such as locked pipe chases, or be __________. - ANS.... -latched or
locked in operation position
20.Medical gas Central Supply systems are NOT permitted to be located
where? - ANS.... -in an unlocked location
21.Fittings, valves, and other components for field-installed positive pressure
distribution systems shall be ________ until prepared for installation. -
ANS.... -delivered sealed, labeled, and kept sealed
, 22.vacuum piping for __________ shall be connected separately from the
medical surgical system directly to the receiver tank through its own
isolation valve and fluid trap located at the receiver. - ANS.... -a teaching
laboratory
23.NFPA 99 specifies that the medical gas piping system shall be protected
against all EXCEPT which of the following? - ANS.... -exposure to liquids
24.Category 1 support gasses carry which of these additional hazards? - ANS....
-higher pressures
25.Manufactured assemblies for medical gas systems employing flexible hose
shall use flexible connectors with a minimum burst gauge pressure of how
many psi? - ANS.... -1000
26.An assembly of equipment that holds a capacity of oxygen greater than
____________ is defined as a Bulk Oxygen System - ANS.... -20,000 ft^3
27.What does it mean when equipment, material or services are shows as
"listed"? - ANS.... -they are identified and published by an organization that
is acceptable to the authority having jurisdiction
28.under which of these conditions shall instrument air reserve header
cylinders be permitted to be stored with the instrument air compressor? -
ANS.... -the only motor-driven machinery in the rooms is for the instrument
air equipment.
29.Which type of copper tube hangers shall be used in a potentially damp
location? - ANS.... -plastic coated
QUESTIONS AND ALL ACTUAL ANSWERS
2026 | VERIFIED & UPDATE
1. In those portions of systems intended to handle oxygen at pressures
greater than 350 psi the interconnecting hose shall NOT contain ________
materials? - ANS.... –Polymeric
2. When is the initial pressure test conducted, by a medical gas installer, on a
nitrous oxide system? - ANS.... -After blowdown of a distribution piping
3. In a Category 1 Dental and Gas Vacuum Piping system, which of the
following is an NFPA 99 requirement for the labeling of pipes? - ANS.... -
Color coding & non-standard pressure
4. Which of the following treatments shall be performed before brazing cut
ends of a tube to be installed in a medical gas piping system? - ANS.... -Cut
ends shall be rolled smooth or deburred
5. Manifolds for gas cylinders shall actuate a(an) _______ signal and shall
activate an indicator at all _______ alarm panels to indicate when or just
before changeover from one header to the other. - ANS.... -Local, master
6. In a non-anesthetizing area, on which side of a zone valve shall the
pressure/vacuum sensor be located? - ANS.... -Station outlet/inlet
,7. What is the purpose of using an oxygen analyzer during the piping purge
prior to brazing? - ANS.... -Assure that all ambient air has been removed
from the pipeline
8. A medical gas master or area alarm panel shall be set to actuate a(an)
_____ indicator when the communication with an alarm-initiating device is
disconnected. - ANS.... -Audible and visual
9. When an EOSC becomes the temporary supply source, a facility will
monitor the system by use of which of the following? - ANS.... -Providing
four connection points to both master alarms
10.Which of the following conditions must be met where medical gas and
vacuum systems are installed by non-certified personnel? - ANS.... -
installation by anyone other than 6010 certified personnel is NOT permitted
11.Which of the following systems shall NOT be permitted to be located in an
outdoor enclosure? - ANS.... -Medical air compressor supply sources
12.Metallic flexible joints are being used in the pipeline for vibration control.
Which of the following is NOT required of such joints? - ANS.... -suitable for
service at 150 psig or above
13.Who shall witness the installer-performed standing vacuum test? - ANS.... -
the authority having jurisdiction, or its designee
14.The medical air compressor intake shall be located a minimum of how
many feet from any exhaust or plumbing vents? - ANS.... -25 feet
,15.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. - ANS.... -upstream
16.With the approval of the Authority Having Jurisdiction, in which areas shall
the zone valves be permitted to be secured to prevent inappropriate
access? - ANS.... -pediatric
17.Factory installed inlet tubes on station outlets shall be NOT less than
__________with 0.3 inch minimum inside diameter. - ANS.... -NPS 1/4, 3/8
in. O.D.
18.Which of these operations would not breach the vacuum system? - ANS.... -
testing a system component with a leak detector solution
19.Except for valves in zone valve boxes, all valves shall be located in secured
areas such as locked pipe chases, or be __________. - ANS.... -latched or
locked in operation position
20.Medical gas Central Supply systems are NOT permitted to be located
where? - ANS.... -in an unlocked location
21.Fittings, valves, and other components for field-installed positive pressure
distribution systems shall be ________ until prepared for installation. -
ANS.... -delivered sealed, labeled, and kept sealed
, 22.vacuum piping for __________ shall be connected separately from the
medical surgical system directly to the receiver tank through its own
isolation valve and fluid trap located at the receiver. - ANS.... -a teaching
laboratory
23.NFPA 99 specifies that the medical gas piping system shall be protected
against all EXCEPT which of the following? - ANS.... -exposure to liquids
24.Category 1 support gasses carry which of these additional hazards? - ANS....
-higher pressures
25.Manufactured assemblies for medical gas systems employing flexible hose
shall use flexible connectors with a minimum burst gauge pressure of how
many psi? - ANS.... -1000
26.An assembly of equipment that holds a capacity of oxygen greater than
____________ is defined as a Bulk Oxygen System - ANS.... -20,000 ft^3
27.What does it mean when equipment, material or services are shows as
"listed"? - ANS.... -they are identified and published by an organization that
is acceptable to the authority having jurisdiction
28.under which of these conditions shall instrument air reserve header
cylinders be permitted to be stored with the instrument air compressor? -
ANS.... -the only motor-driven machinery in the rooms is for the instrument
air equipment.
29.Which type of copper tube hangers shall be used in a potentially damp
location? - ANS.... -plastic coated
