Medical Gas Class UPDATED ACTUAL
Exam Questions and CORRECT Answers
Category 1 medical -surgical vacuum sources shall, at minimum, consist of ______ or more
vacuum pumps - CORRECT ANSWER - Two
Category 1 medical surgical vacuum sources shall consist of an automatic means too prevent
_____ through any off -cycle vacuum pump - CORRECT ANSWER - Backflow
Piping between the vacuum pump and the source shutoff valve shall be permitted to be stainless,
galvanized, or black steel pipe - CORRECT ANSWER - True
Vacuum receiver shall be capable of withstanding a gauge vacuum of ______ of mercury -
CORRECT ANSWER - 30"
The medical surgical vacuum receiver shall be made serviceable without shutting down the
system by _______ - CORRECT 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 - CORRECT ANSWER -
Automatically
The medical surgical vacuum exhaust shall be turned down and screened. The screened shall be
fabricated using what type of material? - CORRECT 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 ______. - CORRECT 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 _____. - CORRECT 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? - CORRECT ANSWER - Local
A level 1 dedicated WAGD source shall consist of ______ or more producers, each shall be
sufficient to serve the peak calculated demand. - CORRECT ANSWER - Two
What source shall not be used to power the venturi of a WAGD system? - CORRECT
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. - CORRECT ANSWER - 5"
A WAGD source system shall activate the ____ alarm when the backup or lag producer is
running. - CORRECT ANSWER - Local
Additional WAGD producers shall be ________ activated when the producer(s) in operation is
incapable of maintaining required vacuum. - CORRECT ANSWER - Automatically
Medical air supply systems shall be required to _____. - CORRECT 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 _____. - CORRECT ANSWER - Human
respiratory applications
Medical air compressor systems shall have a(n) ______ means to prevent back flow through all
off-cycle compressors - CORRECT ANSWER - Automatic
, True - CORRECT 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 - CORRECT 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 - CORRECT ANSWER - Which of the following systems shall not be
permitted to be located in an indoor enclosure
Engines, kitchens, and anesthizing locations - CORRECT ANSWER - Indoor locations for
oxygen, nitrous oxide and mixtures of these gases shall not communicate with ______ locations.
130 degree F - CORRECT ANSWER - Cylinders in use and in storage shall be prevented
from reaching temperatures in excess of ______.
True - CORRECT ANSWER - Locations for central supply systems shall have electrical
devices protected from physical damage.
True - CORRECT ANSWER - Ventilation requirements shall not be less than 50 cfm for
mechanical ventilation.
72 sq. in. - CORRECT ANSWER - Louvered openings for natural ventilation shall have a
minimum free area of _____.
Balanced - CORRECT ANSWER - Final line pressure regulators, when used for bulk
cryogenic liquid systems shall be of a _______ design.
Exam Questions and CORRECT Answers
Category 1 medical -surgical vacuum sources shall, at minimum, consist of ______ or more
vacuum pumps - CORRECT ANSWER - Two
Category 1 medical surgical vacuum sources shall consist of an automatic means too prevent
_____ through any off -cycle vacuum pump - CORRECT ANSWER - Backflow
Piping between the vacuum pump and the source shutoff valve shall be permitted to be stainless,
galvanized, or black steel pipe - CORRECT ANSWER - True
Vacuum receiver shall be capable of withstanding a gauge vacuum of ______ of mercury -
CORRECT ANSWER - 30"
The medical surgical vacuum receiver shall be made serviceable without shutting down the
system by _______ - CORRECT 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 - CORRECT ANSWER -
Automatically
The medical surgical vacuum exhaust shall be turned down and screened. The screened shall be
fabricated using what type of material? - CORRECT 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 ______. - CORRECT 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 _____. - CORRECT 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? - CORRECT ANSWER - Local
A level 1 dedicated WAGD source shall consist of ______ or more producers, each shall be
sufficient to serve the peak calculated demand. - CORRECT ANSWER - Two
What source shall not be used to power the venturi of a WAGD system? - CORRECT
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. - CORRECT ANSWER - 5"
A WAGD source system shall activate the ____ alarm when the backup or lag producer is
running. - CORRECT ANSWER - Local
Additional WAGD producers shall be ________ activated when the producer(s) in operation is
incapable of maintaining required vacuum. - CORRECT ANSWER - Automatically
Medical air supply systems shall be required to _____. - CORRECT 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 _____. - CORRECT ANSWER - Human
respiratory applications
Medical air compressor systems shall have a(n) ______ means to prevent back flow through all
off-cycle compressors - CORRECT ANSWER - Automatic
, True - CORRECT 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 - CORRECT 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 - CORRECT ANSWER - Which of the following systems shall not be
permitted to be located in an indoor enclosure
Engines, kitchens, and anesthizing locations - CORRECT ANSWER - Indoor locations for
oxygen, nitrous oxide and mixtures of these gases shall not communicate with ______ locations.
130 degree F - CORRECT ANSWER - Cylinders in use and in storage shall be prevented
from reaching temperatures in excess of ______.
True - CORRECT ANSWER - Locations for central supply systems shall have electrical
devices protected from physical damage.
True - CORRECT ANSWER - Ventilation requirements shall not be less than 50 cfm for
mechanical ventilation.
72 sq. in. - CORRECT ANSWER - Louvered openings for natural ventilation shall have a
minimum free area of _____.
Balanced - CORRECT ANSWER - Final line pressure regulators, when used for bulk
cryogenic liquid systems shall be of a _______ design.
