Medical Gas Refresher – EXAM STUDY
GUIDE 2026/2027 COMPLETE QUESTIONS
WITH VERIFIED CORRECT ANSWERS ||
100% GUARANTEED PASS
Category 1 medical -surgical vacuum sources shall, at minimum, consist of ______ or more
vacuum pumps - ANSWER Two
Category 1 medical surgical vacuum sources shall consist of an automatic means too prevent
_____ through any off -cycle vacuum pump - ANSWER Backflow
Piping between the vacuum pump and the source shutoff valve shall be permitted to be
stainless, galvanized, or black steel pipe - ANSWER True
Vacuum receiver shall be capable of withstanding a gauge vacuum of ______ of mercury -
ANSWER 30"
The medical surgical vacuum receiver shall be made serviceable without shutting down the
system by _______ - ANSWER Any method to ensure continuation service
When the medical surgical I'm an operation is incapable of adequately maintaining a required
vacuum, additional pump shall be _______ activated - ANSWER Automatically
The medical surgical vacuum exhaust shall be turned down and screened. The screened shall be
fabricated using what type of material? - ANSWER Any non-corroding material
,Multiple vacuum pumps shall be permitted to be join together to come one common exhaust
provided the common exhaust is size to ______. - ANSWER Minimize back pressure
Vacuum exhaust from multiple pumps join together to one common exhaust shall be permitted
provided each pump can be isolated by a _____. - ANSWER Blind flange, manual valve, check
valve
Category 1 medical-surgical vacuum systems shall activate which alarm when the backup or lag
pump is running? - ANSWER Local
A level 1 dedicated WAGD source shall consist of ______ or more producers, each shall be
sufficient to serve the peak calculated demand. - ANSWER Two
What source shall not be used to power the venturi of a WAGD system? - ANSWER Medical
air
WAGD vacuum producers designed for operation at vacuums below ____ Hg/V shall be used
only for WAGD service and not employed for other services. - ANSWER 5"
A WAGD source system shall activate the ____ alarm when the backup or lag producer is
running. - ANSWER Local
Additional WAGD producers shall be ________ activated when the producer(s) in operation is
incapable of maintaining required vacuum. - ANSWER Automatically
Medical air supply systems shall be required to _____. - ANSWER Meet the requirements of
medical air USP, have no detectable liquid hydrocarbons, have less than 25 ppm gaseous
hydrocarbons
,Medical air sources shall be used only for _____. - ANSWER Human respiratory applications
Medical air compressor systems shall have a(n) ______ means to prevent back flow through all
off-cycle compressors - ANSWER Automatic
True - ANSWER An existing system that is not in strict compliance with the provisions of this
standard shall be permitted to be continued in use as long as the authority having jurisdiction
has determined that such use does not constitute a distinct hazard to life
True - ANSWER Cylinder and cryogenic liquid container outlet connections shall be designed
as to render the attachment point unusable when removal of the outlet connection is
attempted
Medical air sources - ANSWER Which of the following systems shall not be permitted to be
located in an indoor enclosure
Engines, kitchens, and anesthizing locations - ANSWER Indoor locations for oxygen, nitrous
oxide and mixtures of these gases shall not communicate with ______ locations.
130 degree F - ANSWER Cylinders in use and in storage shall be prevented from reaching
temperatures in excess of ______.
True - ANSWER Locations for central supply systems shall have electrical devices protected
from physical damage.
True - ANSWER Ventilation requirements shall not be less than 50 cfm for mechanical
ventilation.
, 72 sq. in. - ANSWER Louvered openings for natural ventilation shall have a minimum free
area of _____.
Balanced - ANSWER Final line pressure regulators, when used for bulk cryogenic liquid
systems shall be of a _______ design.
Stainless steel - ANSWER All pressure relief valves shall be made of brass, bronze or
_______.
True - ANSWER When vented to the outside, relief valve vent lines shall be labeled in any
manner that will distinguish them from the medical gas pipeline.
Filter - ANSWER In central supply systems using gas or liquid cylinders, each header shall
have a ______ to prevent debris from entering the manifold controls.
Two- two - ANSWER Manifolds for gas cylinders without reserve shall consist of _____ equal
headers; each with an average day's supply, but not fewer than _____ connections.
Local-master - ANSWER 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 another.
3 - ANSWER The reserve header in a cryogenic liquid cylinder system shall have sufficient
gas cylinder connections for an average day's supply, but not fewer than ______ connections.
Upstream - ANSWER 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.
GUIDE 2026/2027 COMPLETE QUESTIONS
WITH VERIFIED CORRECT ANSWERS ||
100% GUARANTEED PASS
Category 1 medical -surgical vacuum sources shall, at minimum, consist of ______ or more
vacuum pumps - ANSWER Two
Category 1 medical surgical vacuum sources shall consist of an automatic means too prevent
_____ through any off -cycle vacuum pump - ANSWER Backflow
Piping between the vacuum pump and the source shutoff valve shall be permitted to be
stainless, galvanized, or black steel pipe - ANSWER True
Vacuum receiver shall be capable of withstanding a gauge vacuum of ______ of mercury -
ANSWER 30"
The medical surgical vacuum receiver shall be made serviceable without shutting down the
system by _______ - ANSWER Any method to ensure continuation service
When the medical surgical I'm an operation is incapable of adequately maintaining a required
vacuum, additional pump shall be _______ activated - ANSWER Automatically
The medical surgical vacuum exhaust shall be turned down and screened. The screened shall be
fabricated using what type of material? - ANSWER Any non-corroding material
,Multiple vacuum pumps shall be permitted to be join together to come one common exhaust
provided the common exhaust is size to ______. - ANSWER Minimize back pressure
Vacuum exhaust from multiple pumps join together to one common exhaust shall be permitted
provided each pump can be isolated by a _____. - ANSWER Blind flange, manual valve, check
valve
Category 1 medical-surgical vacuum systems shall activate which alarm when the backup or lag
pump is running? - ANSWER Local
A level 1 dedicated WAGD source shall consist of ______ or more producers, each shall be
sufficient to serve the peak calculated demand. - ANSWER Two
What source shall not be used to power the venturi of a WAGD system? - ANSWER Medical
air
WAGD vacuum producers designed for operation at vacuums below ____ Hg/V shall be used
only for WAGD service and not employed for other services. - ANSWER 5"
A WAGD source system shall activate the ____ alarm when the backup or lag producer is
running. - ANSWER Local
Additional WAGD producers shall be ________ activated when the producer(s) in operation is
incapable of maintaining required vacuum. - ANSWER Automatically
Medical air supply systems shall be required to _____. - ANSWER Meet the requirements of
medical air USP, have no detectable liquid hydrocarbons, have less than 25 ppm gaseous
hydrocarbons
,Medical air sources shall be used only for _____. - ANSWER Human respiratory applications
Medical air compressor systems shall have a(n) ______ means to prevent back flow through all
off-cycle compressors - ANSWER Automatic
True - ANSWER An existing system that is not in strict compliance with the provisions of this
standard shall be permitted to be continued in use as long as the authority having jurisdiction
has determined that such use does not constitute a distinct hazard to life
True - ANSWER Cylinder and cryogenic liquid container outlet connections shall be designed
as to render the attachment point unusable when removal of the outlet connection is
attempted
Medical air sources - ANSWER Which of the following systems shall not be permitted to be
located in an indoor enclosure
Engines, kitchens, and anesthizing locations - ANSWER Indoor locations for oxygen, nitrous
oxide and mixtures of these gases shall not communicate with ______ locations.
130 degree F - ANSWER Cylinders in use and in storage shall be prevented from reaching
temperatures in excess of ______.
True - ANSWER Locations for central supply systems shall have electrical devices protected
from physical damage.
True - ANSWER Ventilation requirements shall not be less than 50 cfm for mechanical
ventilation.
, 72 sq. in. - ANSWER Louvered openings for natural ventilation shall have a minimum free
area of _____.
Balanced - ANSWER Final line pressure regulators, when used for bulk cryogenic liquid
systems shall be of a _______ design.
Stainless steel - ANSWER All pressure relief valves shall be made of brass, bronze or
_______.
True - ANSWER When vented to the outside, relief valve vent lines shall be labeled in any
manner that will distinguish them from the medical gas pipeline.
Filter - ANSWER In central supply systems using gas or liquid cylinders, each header shall
have a ______ to prevent debris from entering the manifold controls.
Two- two - ANSWER Manifolds for gas cylinders without reserve shall consist of _____ equal
headers; each with an average day's supply, but not fewer than _____ connections.
Local-master - ANSWER 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 another.
3 - ANSWER The reserve header in a cryogenic liquid cylinder system shall have sufficient
gas cylinder connections for an average day's supply, but not fewer than ______ connections.
Upstream - ANSWER 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.
