MED GAS STUDY GUIDE CORRECT
100%
When is the initial pressure test conducted, by a medical gas installer, on a nitrous
oxide system? - ANSWERSAfter 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? -
ANSWERSPolymeric
In a Category 1 Dental and Gas Vacuum Piping system, which of the following is an
NFPA 99 requirement for the labeling of pipes? - ANSWERSColor 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? - ANSWERSCut 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. - ANSWERSLocal, master
In a non-anesthetizing area, on which side of a zone valve shall the pressure/vacuum
sensor be located? - ANSWERSStation outlet/inlet
What is the purpose of using an oxygen analyzer during the piping purge prior to
brazing? - ANSWERSAssure that all ambient air has been removed from the pipeline
what does it mean when equipment, material or services are shows as "listed"? -
ANSWERSthey 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? - ANSWERSthe 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? -
ANSWERSplastic coated
stainless tubes may be joined by any methods EXCEPT which of the following? -
ANSWERSBraze
,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? - ANSWERSBulk Gas
all pressure relief valves shall be made of ______ brass, or bronze. -
ANSWERSstainless 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? - ANSWERS3
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. -
ANSWERStrisodium phosphate or sodium carbonate with potable water
station outlets/inlets shall be identified as to the ________ for the specific gas or
vacuum provided. - ANSWERSname 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. -
ANSWERScopper oxide
a bulk cryogenic supply contains parallel-piped duplex line regulators. Which of the
following is a requirement for controls for line pressure? - ANSWERSa balanced design
in an Emergency Oxygen Supply connection, the check valves are required to be
constructed of which of the following materials? - ANSWERSBrass or Bronze
which of the following is a requirement for the configuration of a zone valve? -
ANSWERSplaced such that a wall intervenes between the valves and the inlets/outlets
they control
which source shall NOT be used to power the venturi of a WAGD system? -
ANSWERSmedical air
which of these is a requirement for each station inlet? - ANSWERSa primary valve
which type of medical gas has an oxygen concentration > or = to 90% and < or = 96%?
- ANSWERSoxygen 93 USP
a document in which the main text contains only mandatory provisions. Non-mandatory
provisions are located in the appendix or annex. This is the NFPA 99 definition for which
of the following? - ANSWERSStandard
A ______________ system is an assembly of equipment such as storage containers,
pressure regulators, pressure relief devices, vaporizers, manifolds, and interconnecting
, piping that has a storage capacity of more than 20,000 cubic feet (at normal
temperature and pressure), including unconnected reserves on hand at the site. -
ANSWERSbulk oxygen
the vertical pipes connecting the system main line(s) with the branch lines on the
various levels of the facility. This is the definition of which of the following? -
ANSWERSrisers
which category 1 medical gas system includes medical support gas and vacuum
systems, which consist of two sources, including controls, monitors and components? -
ANSWERScentral supply
dental air, used to operate dental devices, consists of which of the following gases? -
ANSWERScompressed air and nitrogen
dental vacuum and scavenging components of a medical gas system are used for which
of the following purposes? - ANSWERSexpel nitrous oxide and oxygen
who is the individual responsible for reviewing all inspection and testing reports prior to
the use of new, additional, renovated, or temporary medical gas and vacuum
installations? - ANSWERSresponsible facility authority
when storing positive pressure cylinders in an outdoor enclosure, the enclosure shall
meet which of the following requirements? - ANSWERSbe (covered in picture) cylinders
from the soil
a Central supply system with a storage capacity of more than 3200 pounds at normal
temperature and pressure best describes which system? - ANSWERSbulk nitrous oxide
central supply
where liquid ring compressors are used, air receivers shall be equipped with a high
water level sensor that activates a(n) ____________ alarm indicator. - ANSWERSlocal
instrument air systems shall activate the alarm systems when the dew point of system
pressure exceeds how many degrees Fahrenheit? - ANSWERS-22^o degrees
performance qualifications of brazers shall remain in effect indefinitely unless the brazer
does NOT braze with the qualified procedure for longer than what period of time? -
ANSWERS6 months
pipe labels shall be located at a maximum interval of how many feet? - ANSWERS20
the installation of medical gas and vacuum systems shall be made by experienced,
qualified and competent installers. Installers shall be certified to the requirements of
which Code/Standard? - ANSWERSASSE Standard 6010
100%
When is the initial pressure test conducted, by a medical gas installer, on a nitrous
oxide system? - ANSWERSAfter 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? -
ANSWERSPolymeric
In a Category 1 Dental and Gas Vacuum Piping system, which of the following is an
NFPA 99 requirement for the labeling of pipes? - ANSWERSColor 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? - ANSWERSCut 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. - ANSWERSLocal, master
In a non-anesthetizing area, on which side of a zone valve shall the pressure/vacuum
sensor be located? - ANSWERSStation outlet/inlet
What is the purpose of using an oxygen analyzer during the piping purge prior to
brazing? - ANSWERSAssure that all ambient air has been removed from the pipeline
what does it mean when equipment, material or services are shows as "listed"? -
ANSWERSthey 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? - ANSWERSthe 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? -
ANSWERSplastic coated
stainless tubes may be joined by any methods EXCEPT which of the following? -
ANSWERSBraze
,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? - ANSWERSBulk Gas
all pressure relief valves shall be made of ______ brass, or bronze. -
ANSWERSstainless 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? - ANSWERS3
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. -
ANSWERStrisodium phosphate or sodium carbonate with potable water
station outlets/inlets shall be identified as to the ________ for the specific gas or
vacuum provided. - ANSWERSname 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. -
ANSWERScopper oxide
a bulk cryogenic supply contains parallel-piped duplex line regulators. Which of the
following is a requirement for controls for line pressure? - ANSWERSa balanced design
in an Emergency Oxygen Supply connection, the check valves are required to be
constructed of which of the following materials? - ANSWERSBrass or Bronze
which of the following is a requirement for the configuration of a zone valve? -
ANSWERSplaced such that a wall intervenes between the valves and the inlets/outlets
they control
which source shall NOT be used to power the venturi of a WAGD system? -
ANSWERSmedical air
which of these is a requirement for each station inlet? - ANSWERSa primary valve
which type of medical gas has an oxygen concentration > or = to 90% and < or = 96%?
- ANSWERSoxygen 93 USP
a document in which the main text contains only mandatory provisions. Non-mandatory
provisions are located in the appendix or annex. This is the NFPA 99 definition for which
of the following? - ANSWERSStandard
A ______________ system is an assembly of equipment such as storage containers,
pressure regulators, pressure relief devices, vaporizers, manifolds, and interconnecting
, piping that has a storage capacity of more than 20,000 cubic feet (at normal
temperature and pressure), including unconnected reserves on hand at the site. -
ANSWERSbulk oxygen
the vertical pipes connecting the system main line(s) with the branch lines on the
various levels of the facility. This is the definition of which of the following? -
ANSWERSrisers
which category 1 medical gas system includes medical support gas and vacuum
systems, which consist of two sources, including controls, monitors and components? -
ANSWERScentral supply
dental air, used to operate dental devices, consists of which of the following gases? -
ANSWERScompressed air and nitrogen
dental vacuum and scavenging components of a medical gas system are used for which
of the following purposes? - ANSWERSexpel nitrous oxide and oxygen
who is the individual responsible for reviewing all inspection and testing reports prior to
the use of new, additional, renovated, or temporary medical gas and vacuum
installations? - ANSWERSresponsible facility authority
when storing positive pressure cylinders in an outdoor enclosure, the enclosure shall
meet which of the following requirements? - ANSWERSbe (covered in picture) cylinders
from the soil
a Central supply system with a storage capacity of more than 3200 pounds at normal
temperature and pressure best describes which system? - ANSWERSbulk nitrous oxide
central supply
where liquid ring compressors are used, air receivers shall be equipped with a high
water level sensor that activates a(n) ____________ alarm indicator. - ANSWERSlocal
instrument air systems shall activate the alarm systems when the dew point of system
pressure exceeds how many degrees Fahrenheit? - ANSWERS-22^o degrees
performance qualifications of brazers shall remain in effect indefinitely unless the brazer
does NOT braze with the qualified procedure for longer than what period of time? -
ANSWERS6 months
pipe labels shall be located at a maximum interval of how many feet? - ANSWERS20
the installation of medical gas and vacuum systems shall be made by experienced,
qualified and competent installers. Installers shall be certified to the requirements of
which Code/Standard? - ANSWERSASSE Standard 6010
