MED GAS EXAM REVIEW QUESTIONS
WITH 100% CORRECT ANSWERS
A master alarm system shall consist of two or mare alarm panels, one of which can be
substituted by a ______. - Answer-centralized computer system
where an initiating device is remote from the building a _____ set of wires shall be
permitted to connect the initiating device to a junction box where the wiring first enters
the building - Answer-single
the two master alarm panels shall be wired independently to the initiating device for
each signal, and a single initiating device shall be permitted to actuate____. - Answer-
multiple master alarm panels
when medical gas system is supplied by a manifold or other alternating type bulk
system, the ____ alarm system shall activate indicating when, or just before, change
over occurs - Answer-Master
the master alarm systems shall activate when the pressure in the main supply lines
increase or decrease ___% from normal operating pressure - Answer-20
The master alarm system shall activate when the main line of the medical-surgical
vacuum system drops to or below____ in. gauge HgV. - Answer-12
a signal from each local alarm system shall be connected to the ___ alarm panels to
indicate that a problem is present with the source equipment. - Answer-master
the medical air dew point high alarm from each compressor site will indicate at the
master alarm panels when the line pressure dew point is greater than ___ F - Answer-
+35
the instrument air dew point high alarm from each compressor site will indicate at the
master alarm panels when the line pressure dew point is greater than ___ F - Answer--
22
area alarm panels for medical gas systems shall indicate when line pressure in the area
being monitored increases or decrease _____ % from normal operating pressure. -
Answer-20
In postive pressure systems , area alarm sensors for vital life support and critical care
areas shall be located on which side of the zone valve box assemblies? - Answer-
patient or use side
,areas for anesthetizing gas delivery shall have area alarm pressure sensors installed on
the ___ side of the individual room zone valve box assembly - Answer-source or patient
if there is more than one source equipment location in a facility, it shall be necessary for
each location to have seperate alarms at the ___ panels - Answer-master
high carbon monoxide levels in a medical air system shall be indicated at each local
alarm site. The alarm shall activate at ____ ppm or higher - Answer-10
factory installed tubing on station outlets shall be not less than___ in NPS with a 0.3mm
diameter - Answer-1/4
which of the following statements is true for each station outlet?
each is required to have a primary _____? - Answer-and secondary valve
supply lines servicing standard and nonstandard oxygen are piped underground from
the remote bulk supply. The standard pressure line requires 50psi and the non-standard
requires 80psi. is it permissible for both services to be supplied by a sing underground
supply line? - Answer-Yes, Provided a operate final line regulator assembly is installed
to set each pressure
excluding outdoor locations, which of these is an NFPA requirement for the wiring of
each of the two master alarm panels - Answer-wired independently to the initiating
devices for each signal
A medical gas master alarm or area alarm panel should be set to acute an____
indicator when the communication with the alarm initiating device is disconnected -
Answer-audible/visual
Category 1 spaces shall have the area alarm sensors installed on _____ of each
individual zone valve box assembly. - Answer-Patient/use side
a new bulk system is being installed outdoors at a new hospital. New wiring in
compliance with NFPA 70, will be run underground from the sensor to the entry point of
the building. an exception in the NFPA 99 permits that the wiring underground from the
alarm initiating device to the junction box inside the building be how many sets of wires
at a minimum. - Answer-1 or 2
which of these is a requirement for area alarm panels? - Answer-Provided visual and
audible indicators
in a bulk supply system, when the cryogenic liquid reserves contents fall to an average
days supply, which alarm system shall be activated? - Answer-master
Master alarm panels shall have a cancelable 80dBa audible indication that can be heard
at what distance - Answer-3ft
, fittings for positive pressure medical gas systems must be cleaned for oxygen service
by the _____, supplier, or other agency prior to installation - Answer-manufacturer
it is the responsibility of the ____ to furnish documentation certifying that all installed
piping and materials are cleaned for oxygen service - Answer-installer
medical-surgical vacuum sytstem piping, when hard drawn seamless copper tube, shall
be in accordance with any of the following standard except - Answer-ASTM B597
which of the following piping materials shall be permitted for field installed medical-
surgical vacuum distribution piping systems. - Answer-stainless steel pipe
brazed joints shall be made using a brazing alloy that exhibits a melting tempature in
excess of ___F to retain the integrity of the piping system in the event of a fire - Answer-
1000
which filler metals shall be used to braze copper to copper joints in medical gas and
vacuum distribution piping? - Answer-BCuP Series
NFPA 99 requires tubing to be cut square using a sharp tubing cutter that shall be free
from grease, oil, or other lubricants not suitable for oxygen service. after cutting tube
ends shall be permitted to be _____. - Answer-rolled smooth or deburred
Joints shall be brazed within ____ hours after surfaces are cleaned for brazing -
Answer-8
while brazing medical gas copper joints, a purge gas shall flow continuously to prevent
the formation of copper oxide on the inside surface of the joint. ___ shall be used as a
purge gas - Answer-Nitrogen NF
to assure that all ambient air has been removed from the pipe line prior to brazing, an
____ shall be used to verify the effectiveness of the purge - Answer-oxygen analyzer
when using the autogenous orbital welding process, joints shall be continuously _____
inside and outside with an inert gas as qualified with the procedure. - Answer-purged
which joining method is acceptable on category 1 medical gas and medical surgical
vacuum distribution pipeline systems? - Answer-axially swaged fittings
Axially swaged fittings that provide a metal to metal seal having pressure and
temperature ratings of a brazed joint when complete they are _____ shall permitted to
be used in medical gas piping systems - Answer-permanent
threaded joints in medical gas and medical surgical vacuum systems shall be permitted
for all the following except - Answer-alarm pressure switches
WITH 100% CORRECT ANSWERS
A master alarm system shall consist of two or mare alarm panels, one of which can be
substituted by a ______. - Answer-centralized computer system
where an initiating device is remote from the building a _____ set of wires shall be
permitted to connect the initiating device to a junction box where the wiring first enters
the building - Answer-single
the two master alarm panels shall be wired independently to the initiating device for
each signal, and a single initiating device shall be permitted to actuate____. - Answer-
multiple master alarm panels
when medical gas system is supplied by a manifold or other alternating type bulk
system, the ____ alarm system shall activate indicating when, or just before, change
over occurs - Answer-Master
the master alarm systems shall activate when the pressure in the main supply lines
increase or decrease ___% from normal operating pressure - Answer-20
The master alarm system shall activate when the main line of the medical-surgical
vacuum system drops to or below____ in. gauge HgV. - Answer-12
a signal from each local alarm system shall be connected to the ___ alarm panels to
indicate that a problem is present with the source equipment. - Answer-master
the medical air dew point high alarm from each compressor site will indicate at the
master alarm panels when the line pressure dew point is greater than ___ F - Answer-
+35
the instrument air dew point high alarm from each compressor site will indicate at the
master alarm panels when the line pressure dew point is greater than ___ F - Answer--
22
area alarm panels for medical gas systems shall indicate when line pressure in the area
being monitored increases or decrease _____ % from normal operating pressure. -
Answer-20
In postive pressure systems , area alarm sensors for vital life support and critical care
areas shall be located on which side of the zone valve box assemblies? - Answer-
patient or use side
,areas for anesthetizing gas delivery shall have area alarm pressure sensors installed on
the ___ side of the individual room zone valve box assembly - Answer-source or patient
if there is more than one source equipment location in a facility, it shall be necessary for
each location to have seperate alarms at the ___ panels - Answer-master
high carbon monoxide levels in a medical air system shall be indicated at each local
alarm site. The alarm shall activate at ____ ppm or higher - Answer-10
factory installed tubing on station outlets shall be not less than___ in NPS with a 0.3mm
diameter - Answer-1/4
which of the following statements is true for each station outlet?
each is required to have a primary _____? - Answer-and secondary valve
supply lines servicing standard and nonstandard oxygen are piped underground from
the remote bulk supply. The standard pressure line requires 50psi and the non-standard
requires 80psi. is it permissible for both services to be supplied by a sing underground
supply line? - Answer-Yes, Provided a operate final line regulator assembly is installed
to set each pressure
excluding outdoor locations, which of these is an NFPA requirement for the wiring of
each of the two master alarm panels - Answer-wired independently to the initiating
devices for each signal
A medical gas master alarm or area alarm panel should be set to acute an____
indicator when the communication with the alarm initiating device is disconnected -
Answer-audible/visual
Category 1 spaces shall have the area alarm sensors installed on _____ of each
individual zone valve box assembly. - Answer-Patient/use side
a new bulk system is being installed outdoors at a new hospital. New wiring in
compliance with NFPA 70, will be run underground from the sensor to the entry point of
the building. an exception in the NFPA 99 permits that the wiring underground from the
alarm initiating device to the junction box inside the building be how many sets of wires
at a minimum. - Answer-1 or 2
which of these is a requirement for area alarm panels? - Answer-Provided visual and
audible indicators
in a bulk supply system, when the cryogenic liquid reserves contents fall to an average
days supply, which alarm system shall be activated? - Answer-master
Master alarm panels shall have a cancelable 80dBa audible indication that can be heard
at what distance - Answer-3ft
, fittings for positive pressure medical gas systems must be cleaned for oxygen service
by the _____, supplier, or other agency prior to installation - Answer-manufacturer
it is the responsibility of the ____ to furnish documentation certifying that all installed
piping and materials are cleaned for oxygen service - Answer-installer
medical-surgical vacuum sytstem piping, when hard drawn seamless copper tube, shall
be in accordance with any of the following standard except - Answer-ASTM B597
which of the following piping materials shall be permitted for field installed medical-
surgical vacuum distribution piping systems. - Answer-stainless steel pipe
brazed joints shall be made using a brazing alloy that exhibits a melting tempature in
excess of ___F to retain the integrity of the piping system in the event of a fire - Answer-
1000
which filler metals shall be used to braze copper to copper joints in medical gas and
vacuum distribution piping? - Answer-BCuP Series
NFPA 99 requires tubing to be cut square using a sharp tubing cutter that shall be free
from grease, oil, or other lubricants not suitable for oxygen service. after cutting tube
ends shall be permitted to be _____. - Answer-rolled smooth or deburred
Joints shall be brazed within ____ hours after surfaces are cleaned for brazing -
Answer-8
while brazing medical gas copper joints, a purge gas shall flow continuously to prevent
the formation of copper oxide on the inside surface of the joint. ___ shall be used as a
purge gas - Answer-Nitrogen NF
to assure that all ambient air has been removed from the pipe line prior to brazing, an
____ shall be used to verify the effectiveness of the purge - Answer-oxygen analyzer
when using the autogenous orbital welding process, joints shall be continuously _____
inside and outside with an inert gas as qualified with the procedure. - Answer-purged
which joining method is acceptable on category 1 medical gas and medical surgical
vacuum distribution pipeline systems? - Answer-axially swaged fittings
Axially swaged fittings that provide a metal to metal seal having pressure and
temperature ratings of a brazed joint when complete they are _____ shall permitted to
be used in medical gas piping systems - Answer-permanent
threaded joints in medical gas and medical surgical vacuum systems shall be permitted
for all the following except - Answer-alarm pressure switches
