MED GAS STUDY GUIDE
QUESTIONS & ANSWERS(RATED
A+)
When is the initial pressure test conducted, by a medical gas installer, on a nitrous
oxide system? - ANSWERAfter 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? -
ANSWERPolymeric
In a Category 1 Dental and Gas Vacuum Piping system, which of the following is an
NFPA 99 requirement for the labeling of pipes? - ANSWERColor coding & non-
standard pressure
Which of the following treatments shall be performed before brazing cut ends of a
tube to be installed in a medical gas piping system? - ANSWERCut ends shall be
rolled smooth or deburred
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. - ANSWERLocal, master
all fittings for medical gas work shall be kept separate from other tools and kept free
of grease or oil. If cleaned, only a degreaser such as __________ is permitted. -
ANSWERtrisodium phosphate or sodium carbonate with potable water
station outlets/inlets shall be identified as to the ________ for the specific gas or
vacuum provided. - ANSWERname or chemical symbol
when brazing, joints shall be continuously purges with oil-free, dry nitrogen NF to
prevent the formation of __________ on the inside surfaces of the joint. -
ANSWERcopper oxide
In a non-anesthetizing area, on which side of a zone valve shall the
pressure/vacuum sensor be located? - ANSWERStation outlet/inlet
What is the purpose of using an oxygen analyzer during the piping purge prior to
brazing? - ANSWERAssure that all ambient air has been removed from the pipeline
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. -
ANSWERAudible and visual
,When an EOSC becomes the temporary supply source, a facility will monitor the
system by use of which of the following? - ANSWERProviding four connection points
to both master alarms
Which of the following conditions must be met where medical gas and vacuum
systems are installed by non-certified personnel? - ANSWERinstallation by anyone
other than 6010 certified personnel is NOT permitted
Which of the following systems shall NOT be permitted to be located in an outdoor
enclosure? - ANSWERMedical air compressor supply sources
Metallic flexible joints are being used in the pipeline for vibration control. Which of
the following is NOT required of such joints? - ANSWERsuitable for service at 150
psig or above
who shall witness the installer-performed standing vacuum test? - ANSWERthe
authority having jurisdiction, or its designee
the medical air compressor intake shall be located a minimum of how many feet from
any exhaust or plumbing vents? - ANSWER25 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. -
ANSWERupstream
with the approval of the Authority Having Jurisdiction, in which areas shall the zone
valves be permitted to be secured to prevent inappropriate access? -
ANSWERpediatric
factory installed inlet tubes on station outlets shall be NOT less than
__________with 0.3 inch minimum inside diameter. - ANSWERNPS 1/4, 3/8 in. O.D.
which of these operations would not breach the vacuum system? - ANSWERtesting
a system component with a leak detector solution
except for valves in zone valve boxes, all valves shall be located in secured areas
such as locked pipe chases, or be __________. - ANSWERlatched or locked in
operation position
medical gas Central Supply systems are NOT permitted to be located where? -
ANSWERin an unlocked location
fittings, valves, and other components for field-installed positive pressure distribution
systems shall be ________ until prepared for installation. - ANSWERdelivered
sealed, labeled, and kept sealed
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. - ANSWERa teaching laboratory
, NFPA 99 specifies that the medical gas piping system shall be protected against all
EXCEPT which of the following? - ANSWERexposure to liquids
category 1 support gasses carry which of these additional hazards? -
ANSWERhigher pressures
manufactured assemblies for medical gas systems employing flexible hose shall use
flexible connectors with a minimum burst gauge pressure of how many psi? -
ANSWER1000
an assembly of equipment that holds a capacity of oxygen greater than
____________ is defined as a Bulk Oxygen System - ANSWER20,000 ft^3
what does it mean when equipment, material or services are shows as "listed"? -
ANSWERthey are identified and published by an organization that is acceptable to
the authority having jurisdiction
under which of these conditions shall instrument air reserve header cylinders be
permitted to be stored with the instrument air compressor? - ANSWERthe only
motor-driven machinery in the rooms is for the instrument air equipment.
which type of copper tube hangers shall be used in a potentially damp location? -
ANSWERplastic coated
stainless tubes may be joined by any methods EXCEPT which of the following? -
ANSWERBraze
gas storage for Central Supply Systems required specialized knowledge and
consideration of information in the NFPA 55 for locating, installing and inspection of
which of the following? - ANSWERBulk Gas
all pressure relief valves shall be made of ______ brass, or bronze. -
ANSWERstainless steel
the reserve header in a cryogenic liquid cylinder manifold system shall have
sufficient cylinder connections for one average day's supply, but NOT fewer than
how many connections? - ANSWER3
a bulk cryogenic supply contains parallel-piped duplex line regulators. Which of the
following is a requirement for controls for line pressure? - ANSWERa balanced
design
in an Emergency Oxygen Supply connection, the check valves are required to be
constructed of which of the following materials? - ANSWERBrass or Bronze
which of the following is a requirement for the configuration of a zone valve? -
ANSWERplaced such that a wall intervenes between the valves and the
inlets/outlets they control
QUESTIONS & ANSWERS(RATED
A+)
When is the initial pressure test conducted, by a medical gas installer, on a nitrous
oxide system? - ANSWERAfter 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? -
ANSWERPolymeric
In a Category 1 Dental and Gas Vacuum Piping system, which of the following is an
NFPA 99 requirement for the labeling of pipes? - ANSWERColor coding & non-
standard pressure
Which of the following treatments shall be performed before brazing cut ends of a
tube to be installed in a medical gas piping system? - ANSWERCut ends shall be
rolled smooth or deburred
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. - ANSWERLocal, master
all fittings for medical gas work shall be kept separate from other tools and kept free
of grease or oil. If cleaned, only a degreaser such as __________ is permitted. -
ANSWERtrisodium phosphate or sodium carbonate with potable water
station outlets/inlets shall be identified as to the ________ for the specific gas or
vacuum provided. - ANSWERname or chemical symbol
when brazing, joints shall be continuously purges with oil-free, dry nitrogen NF to
prevent the formation of __________ on the inside surfaces of the joint. -
ANSWERcopper oxide
In a non-anesthetizing area, on which side of a zone valve shall the
pressure/vacuum sensor be located? - ANSWERStation outlet/inlet
What is the purpose of using an oxygen analyzer during the piping purge prior to
brazing? - ANSWERAssure that all ambient air has been removed from the pipeline
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. -
ANSWERAudible and visual
,When an EOSC becomes the temporary supply source, a facility will monitor the
system by use of which of the following? - ANSWERProviding four connection points
to both master alarms
Which of the following conditions must be met where medical gas and vacuum
systems are installed by non-certified personnel? - ANSWERinstallation by anyone
other than 6010 certified personnel is NOT permitted
Which of the following systems shall NOT be permitted to be located in an outdoor
enclosure? - ANSWERMedical air compressor supply sources
Metallic flexible joints are being used in the pipeline for vibration control. Which of
the following is NOT required of such joints? - ANSWERsuitable for service at 150
psig or above
who shall witness the installer-performed standing vacuum test? - ANSWERthe
authority having jurisdiction, or its designee
the medical air compressor intake shall be located a minimum of how many feet from
any exhaust or plumbing vents? - ANSWER25 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. -
ANSWERupstream
with the approval of the Authority Having Jurisdiction, in which areas shall the zone
valves be permitted to be secured to prevent inappropriate access? -
ANSWERpediatric
factory installed inlet tubes on station outlets shall be NOT less than
__________with 0.3 inch minimum inside diameter. - ANSWERNPS 1/4, 3/8 in. O.D.
which of these operations would not breach the vacuum system? - ANSWERtesting
a system component with a leak detector solution
except for valves in zone valve boxes, all valves shall be located in secured areas
such as locked pipe chases, or be __________. - ANSWERlatched or locked in
operation position
medical gas Central Supply systems are NOT permitted to be located where? -
ANSWERin an unlocked location
fittings, valves, and other components for field-installed positive pressure distribution
systems shall be ________ until prepared for installation. - ANSWERdelivered
sealed, labeled, and kept sealed
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. - ANSWERa teaching laboratory
, NFPA 99 specifies that the medical gas piping system shall be protected against all
EXCEPT which of the following? - ANSWERexposure to liquids
category 1 support gasses carry which of these additional hazards? -
ANSWERhigher pressures
manufactured assemblies for medical gas systems employing flexible hose shall use
flexible connectors with a minimum burst gauge pressure of how many psi? -
ANSWER1000
an assembly of equipment that holds a capacity of oxygen greater than
____________ is defined as a Bulk Oxygen System - ANSWER20,000 ft^3
what does it mean when equipment, material or services are shows as "listed"? -
ANSWERthey are identified and published by an organization that is acceptable to
the authority having jurisdiction
under which of these conditions shall instrument air reserve header cylinders be
permitted to be stored with the instrument air compressor? - ANSWERthe only
motor-driven machinery in the rooms is for the instrument air equipment.
which type of copper tube hangers shall be used in a potentially damp location? -
ANSWERplastic coated
stainless tubes may be joined by any methods EXCEPT which of the following? -
ANSWERBraze
gas storage for Central Supply Systems required specialized knowledge and
consideration of information in the NFPA 55 for locating, installing and inspection of
which of the following? - ANSWERBulk Gas
all pressure relief valves shall be made of ______ brass, or bronze. -
ANSWERstainless steel
the reserve header in a cryogenic liquid cylinder manifold system shall have
sufficient cylinder connections for one average day's supply, but NOT fewer than
how many connections? - ANSWER3
a bulk cryogenic supply contains parallel-piped duplex line regulators. Which of the
following is a requirement for controls for line pressure? - ANSWERa balanced
design
in an Emergency Oxygen Supply connection, the check valves are required to be
constructed of which of the following materials? - ANSWERBrass or Bronze
which of the following is a requirement for the configuration of a zone valve? -
ANSWERplaced such that a wall intervenes between the valves and the
inlets/outlets they control
