MEDGAS TEST QUESTIONS &
ANSWERS(RATED A+)
Metallic and non metallic flexible connectors shall have a minimum burst of pressure
- ANSWER1000 psi
The reserve supply of manifold high pressure cylinders shall consist of -
ANSWERthree or more
a building or part thereof used for the medical, psychiatric, obstetrical or surgical
care on a 24 hr basis of four or more patients is a - ANSWERhospital facility
to ensure continous observation the master alarm signal panels shall be located -
ANSWERin two separate warning locations
Piping shall be protect against frost, corrosion and - ANSWERphysical damage
A unit of pressure measurement with zero pressure as the base or reference
pressue - ANSWERPSIA
A presssure relief valve shall be set at - ANSWER50 percent above normal line
pressure
Where dissimilar metals, such as copper and bronze or brass are being brazed, the
flux shall be worked over teh surfaces to be brazed using a - ANSWERstiff bristle
brush
Building or portions of buildings in which medical, dental, psychiatric, nursing,
obstetrical or surgical care is provided is a - ANSWERhealth care facility
Central supply systems for Nitrous Oxide and Carbon Dioxide using cylinders or
portable containers shall be prevented from reaching lower than recommendations of
the central supply system's manufactuerer, but shall never be lower than or greater
than - ANSWER(c) -30, 125 F
Clean _______ shall be used to clean the exterior surfaces of tube ends -
ANSWERnon shedding abrasive pads
prior to closing of walls a cross connection test shall be made. All medical gas
systems shall be reduced to atmospheric pressure and ____ - ANSWEReach
system pressurized separately with 50 psig of oil free nitrogen
New or replacement valves shall be - ANSWERquarter turn shut off type with an
indicating handle
, zone valve boxes shall be installed where they are - ANSWERvisible and accessible
at all times
If the interior surfaces of fitting sockets become contaminated prior to brazing, they
shall be recleaned for brazing with a clean, oil-free wire brush and - ANSWERshall
not result in grooving or surfaces to be joined
use of steel wool in the cleaning of medical gas piping is - ANSWERprohibited due to
the possible presence of oil
In order to remove particulate matter in a pipeline, a high volume intermittent purge
shall be put on each outlet and allowed to flow until the purge - ANSWERproduces
no discoloration on a white cloth
If sealing compound is used on threaded fittings, it should be applied - ANSWERto
male threads online
all piping systems shall be sujected to a 24 hr standing test at 20 percent above the
normal line pressure. The test gas shall be - ANSWERoil free dry nitrogen
cylinders in use and in storage shall be prevented from reaching temperatures in
excess of - ANSWER125 F
the three general classes of medical gas piping are - ANSWERmain lines, risers, and
branch (lateral) lines
nitrogen is an element that at atmospheric tempratures and pressures exist as a
clear colorless and tasteless gas. It comprises how much of earths atmosphere -
ANSWERfour-fifths
Buried piping under roadways, parking areas or other locations subject to surface
loads shall be - ANSWERburied a minnimum of 36 inches below grade
Brazed joins shall be continously purged with oil free dry nitrogen - ANSWERuntil the
joint is cool to the touch
Medical air compressors shall be sufficient to serve the peak calculated demand with
the ______ single compressor out of service. But in no case shall there be fewer
than _______ compressors. - ANSWERlargest, 2
Maximum support spacing for 1 inch medical gas piping shall be - ANSWER8 ft.
During and after installation, openings in the piping system shall be kept -
ANSWERplugged or capped
Where operating pressure are above 185 psi - ANSWERtype K ASTM B819 shall be
used
ANSWERS(RATED A+)
Metallic and non metallic flexible connectors shall have a minimum burst of pressure
- ANSWER1000 psi
The reserve supply of manifold high pressure cylinders shall consist of -
ANSWERthree or more
a building or part thereof used for the medical, psychiatric, obstetrical or surgical
care on a 24 hr basis of four or more patients is a - ANSWERhospital facility
to ensure continous observation the master alarm signal panels shall be located -
ANSWERin two separate warning locations
Piping shall be protect against frost, corrosion and - ANSWERphysical damage
A unit of pressure measurement with zero pressure as the base or reference
pressue - ANSWERPSIA
A presssure relief valve shall be set at - ANSWER50 percent above normal line
pressure
Where dissimilar metals, such as copper and bronze or brass are being brazed, the
flux shall be worked over teh surfaces to be brazed using a - ANSWERstiff bristle
brush
Building or portions of buildings in which medical, dental, psychiatric, nursing,
obstetrical or surgical care is provided is a - ANSWERhealth care facility
Central supply systems for Nitrous Oxide and Carbon Dioxide using cylinders or
portable containers shall be prevented from reaching lower than recommendations of
the central supply system's manufactuerer, but shall never be lower than or greater
than - ANSWER(c) -30, 125 F
Clean _______ shall be used to clean the exterior surfaces of tube ends -
ANSWERnon shedding abrasive pads
prior to closing of walls a cross connection test shall be made. All medical gas
systems shall be reduced to atmospheric pressure and ____ - ANSWEReach
system pressurized separately with 50 psig of oil free nitrogen
New or replacement valves shall be - ANSWERquarter turn shut off type with an
indicating handle
, zone valve boxes shall be installed where they are - ANSWERvisible and accessible
at all times
If the interior surfaces of fitting sockets become contaminated prior to brazing, they
shall be recleaned for brazing with a clean, oil-free wire brush and - ANSWERshall
not result in grooving or surfaces to be joined
use of steel wool in the cleaning of medical gas piping is - ANSWERprohibited due to
the possible presence of oil
In order to remove particulate matter in a pipeline, a high volume intermittent purge
shall be put on each outlet and allowed to flow until the purge - ANSWERproduces
no discoloration on a white cloth
If sealing compound is used on threaded fittings, it should be applied - ANSWERto
male threads online
all piping systems shall be sujected to a 24 hr standing test at 20 percent above the
normal line pressure. The test gas shall be - ANSWERoil free dry nitrogen
cylinders in use and in storage shall be prevented from reaching temperatures in
excess of - ANSWER125 F
the three general classes of medical gas piping are - ANSWERmain lines, risers, and
branch (lateral) lines
nitrogen is an element that at atmospheric tempratures and pressures exist as a
clear colorless and tasteless gas. It comprises how much of earths atmosphere -
ANSWERfour-fifths
Buried piping under roadways, parking areas or other locations subject to surface
loads shall be - ANSWERburied a minnimum of 36 inches below grade
Brazed joins shall be continously purged with oil free dry nitrogen - ANSWERuntil the
joint is cool to the touch
Medical air compressors shall be sufficient to serve the peak calculated demand with
the ______ single compressor out of service. But in no case shall there be fewer
than _______ compressors. - ANSWERlargest, 2
Maximum support spacing for 1 inch medical gas piping shall be - ANSWER8 ft.
During and after installation, openings in the piping system shall be kept -
ANSWERplugged or capped
Where operating pressure are above 185 psi - ANSWERtype K ASTM B819 shall be
used
