2025 NFPA99 Medical Gas Exam
Questions and Answers
A manual reset local alarm that indicates when the capacity of the
instrument air central supply system not in use is less than the equivalent
capacity of - -One compressor
- After a final tie - In on an active vacuum system , each vacuum joints shall
be tested with a leak detector or other means that will allow detectant on an
active vacuum system . - -Ultrasonic
- After the final tie-in each joint shall be leak tested by the source gas. New
work and the existing system at the normal operating pressure shall be leak
checked with a leak detectant that is safe for use with oxygen and does NOT
contain _______________ - -Ammonia
- After the piping system, the blow down test shall be done. Then the
installer must perform which of the following test? - -Initial pressure test
- Alarm panels and shutoff valves labeling shall be ____________ when
modifications are made, changing the areas serviced - -Updated
- All gas outlets with gauge pressure of 345 kPa (50 psi), including, but not
limited to, oxygen, nitrous oxide, medical air, and carbon dioxide, shall
deliver 100 SLPM (3.5 SCFM) with a pressure drop of not more than 35 kPa
(______) and static pressure of 345 kPa to 380 kPa (50psi to 55 psi) - -5 psi
- Area alarms shall be tested to verify the warning signals for all vital life
support and critical care areas if the pressure in the piping system increases
or decreases by _______ - -20%
- At the sample port a demand of approximated 25% load shall be created to
cause the compressors to cycle on and off continuously and the dryers to
operate for the ______ period. - -12 hour
- Before the piping system is put into use, who is responsible for the
ascertaining that the gas delivered to the outlet/inlet has the proper labels
and connecting fittings. - -Facility authority
- Breached portions of the systems subject to inspection and testing shall be
confined to only the specific altered zone or area that is downstream for
pressure gases at the point of intrusion. Where a system shall be declared
breached? - -Physical separation of pipeline, system component removal,
replacement or addition of system components
, - Category 2 & 3 medical has and vacuum systems are allowed to be
________ on the amount of compressors and vacuum pumps - -Simplex
- Category 2 oxygen piping shall be at least 1 size larger than piping for
_______? - -Nitrous oxide
- Category 3 gas-power device supply systems, vacuum systems and
scavenging systems. The initial tests shall be performed before the final
tests shall be conducted by ______. - -Installer, representative of the system
manufacturer, medical gas system verifier 6030
- Category 3 piped gas and vacuum systems only ______ shall be permitted. -
-Minimal or no sedation
- Category 3 vacuum source equipment shall be obtained from, and be
installed under the supervision of the __________? - -Manufacturer, supplier,
who is familiar with its installation, operation and use
- Category 2 & 3 medical gas systems are required to have how many alarm
panels? - -1
- Cylinders in service and in storage shall be __________ secured and located
to prevent falling or being knocked over. - -Individually
- Dental air sources for a compressor intake located inside the building shall
be located within a space where no _______ are stored or used. - -Chemical
based materials, patient medical treatment, discharge from category 3
vacuum system
- Dental applications that use flexible connectors shall have a gauge
pressure rating not less than _______ - -1000 psi
- Distribution piping for support gas systems (nitrogen and instrument air)
shall be ________ type "L" copper tube - -ASTM B819
- During the initial pressure test, the source shutoff valve shall remain
closed and the test pressure for pressure gases shall be 1.5 times the system
working pressure, but not less than ______ - -150 psi
- Each health care facility shall designate one or more individuals to be the
_______ with respect to the facility's medical gas and vacuum systems. - -
Responsible facility authority
Questions and Answers
A manual reset local alarm that indicates when the capacity of the
instrument air central supply system not in use is less than the equivalent
capacity of - -One compressor
- After a final tie - In on an active vacuum system , each vacuum joints shall
be tested with a leak detector or other means that will allow detectant on an
active vacuum system . - -Ultrasonic
- After the final tie-in each joint shall be leak tested by the source gas. New
work and the existing system at the normal operating pressure shall be leak
checked with a leak detectant that is safe for use with oxygen and does NOT
contain _______________ - -Ammonia
- After the piping system, the blow down test shall be done. Then the
installer must perform which of the following test? - -Initial pressure test
- Alarm panels and shutoff valves labeling shall be ____________ when
modifications are made, changing the areas serviced - -Updated
- All gas outlets with gauge pressure of 345 kPa (50 psi), including, but not
limited to, oxygen, nitrous oxide, medical air, and carbon dioxide, shall
deliver 100 SLPM (3.5 SCFM) with a pressure drop of not more than 35 kPa
(______) and static pressure of 345 kPa to 380 kPa (50psi to 55 psi) - -5 psi
- Area alarms shall be tested to verify the warning signals for all vital life
support and critical care areas if the pressure in the piping system increases
or decreases by _______ - -20%
- At the sample port a demand of approximated 25% load shall be created to
cause the compressors to cycle on and off continuously and the dryers to
operate for the ______ period. - -12 hour
- Before the piping system is put into use, who is responsible for the
ascertaining that the gas delivered to the outlet/inlet has the proper labels
and connecting fittings. - -Facility authority
- Breached portions of the systems subject to inspection and testing shall be
confined to only the specific altered zone or area that is downstream for
pressure gases at the point of intrusion. Where a system shall be declared
breached? - -Physical separation of pipeline, system component removal,
replacement or addition of system components
, - Category 2 & 3 medical has and vacuum systems are allowed to be
________ on the amount of compressors and vacuum pumps - -Simplex
- Category 2 oxygen piping shall be at least 1 size larger than piping for
_______? - -Nitrous oxide
- Category 3 gas-power device supply systems, vacuum systems and
scavenging systems. The initial tests shall be performed before the final
tests shall be conducted by ______. - -Installer, representative of the system
manufacturer, medical gas system verifier 6030
- Category 3 piped gas and vacuum systems only ______ shall be permitted. -
-Minimal or no sedation
- Category 3 vacuum source equipment shall be obtained from, and be
installed under the supervision of the __________? - -Manufacturer, supplier,
who is familiar with its installation, operation and use
- Category 2 & 3 medical gas systems are required to have how many alarm
panels? - -1
- Cylinders in service and in storage shall be __________ secured and located
to prevent falling or being knocked over. - -Individually
- Dental air sources for a compressor intake located inside the building shall
be located within a space where no _______ are stored or used. - -Chemical
based materials, patient medical treatment, discharge from category 3
vacuum system
- Dental applications that use flexible connectors shall have a gauge
pressure rating not less than _______ - -1000 psi
- Distribution piping for support gas systems (nitrogen and instrument air)
shall be ________ type "L" copper tube - -ASTM B819
- During the initial pressure test, the source shutoff valve shall remain
closed and the test pressure for pressure gases shall be 1.5 times the system
working pressure, but not less than ______ - -150 psi
- Each health care facility shall designate one or more individuals to be the
_______ with respect to the facility's medical gas and vacuum systems. - -
Responsible facility authority
