NFPA99 Medical Gas
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 ANS: 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 . ANS: 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 _______________ ANS: Ammonia
After the piping system, the blow down test shall be done. Then the installer must perform which of the
following test? ANS: Initial pressure test
Alarm panels and shutoff valves labeling shall be ____________ when modifications are made, changing
the areas serviced ANS: 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) ANS: 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 _______ ANS: 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. ANS: 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. ANS: 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? ANS: 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 ANS: Simplex
Category 2 oxygen piping shall be at least 1 size larger than piping for _______? ANS: 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 ______. ANS: Installer, representative of
the system manufacturer, medical gas system verifier 6030
Category 3 piped gas and vacuum systems only ______ shall be permitted. ANS: Minimal or no sedation
Category 3 vacuum source equipment shall be obtained from, and be installed under the supervision of
the __________? ANS: 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? ANS: 1
Cylinders in service and in storage shall be __________ secured and located to prevent falling or being
knocked over. ANS: Individually
Dental air sources for a compressor intake located inside the building shall be located within a space
where no _______ are stored or used. ANS: 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 _______
ANS: 1000 psi
Distribution piping for support gas systems (nitrogen and instrument air) shall be ________ type "L"
copper tube ANS: 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 ______ ANS: 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. ANS: Responsible facility authority
Final line filters for instrument air shall be equipped with a continuous visual indicator showing the
status of the filter ________? ANS: Element life indicator
Final line filters for instrument air shall be rated for a minimum of ______ efficiency at _____ micron.
ANS: 98% at .01
In category 2 piped gas or piped vacuum systems shall be permitted to administrate moderate sedation,
minimal sedation. If a patient is put into a deep sedation or general anesthesia then the risk assessment
is pile most likely place the user in what category? ANS: Category 1
In a dental vacuum system, the dental vacuum tubing shall be permitted to be polyvinyl chloride (pvc)
plastic with a minimum wall thickness of _______ ANS: Schedule 40
In a dental, connecting a manifold to the gas distribution piping the flexible connectors shall not exceed
_____ in length. ANS: 5 feet
In a single treatment facility the central supply systems shall contain a minimum of _____ equal headers,
of one or more cylinders with each header containing a minimum of an average days supply. ANS: 2
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 ANS: 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 . ANS: 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 _______________ ANS: Ammonia
After the piping system, the blow down test shall be done. Then the installer must perform which of the
following test? ANS: Initial pressure test
Alarm panels and shutoff valves labeling shall be ____________ when modifications are made, changing
the areas serviced ANS: 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) ANS: 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 _______ ANS: 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. ANS: 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. ANS: 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? ANS: 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 ANS: Simplex
Category 2 oxygen piping shall be at least 1 size larger than piping for _______? ANS: 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 ______. ANS: Installer, representative of
the system manufacturer, medical gas system verifier 6030
Category 3 piped gas and vacuum systems only ______ shall be permitted. ANS: Minimal or no sedation
Category 3 vacuum source equipment shall be obtained from, and be installed under the supervision of
the __________? ANS: 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? ANS: 1
Cylinders in service and in storage shall be __________ secured and located to prevent falling or being
knocked over. ANS: Individually
Dental air sources for a compressor intake located inside the building shall be located within a space
where no _______ are stored or used. ANS: 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 _______
ANS: 1000 psi
Distribution piping for support gas systems (nitrogen and instrument air) shall be ________ type "L"
copper tube ANS: 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 ______ ANS: 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. ANS: Responsible facility authority
Final line filters for instrument air shall be equipped with a continuous visual indicator showing the
status of the filter ________? ANS: Element life indicator
Final line filters for instrument air shall be rated for a minimum of ______ efficiency at _____ micron.
ANS: 98% at .01
In category 2 piped gas or piped vacuum systems shall be permitted to administrate moderate sedation,
minimal sedation. If a patient is put into a deep sedation or general anesthesia then the risk assessment
is pile most likely place the user in what category? ANS: Category 1
In a dental vacuum system, the dental vacuum tubing shall be permitted to be polyvinyl chloride (pvc)
plastic with a minimum wall thickness of _______ ANS: Schedule 40
In a dental, connecting a manifold to the gas distribution piping the flexible connectors shall not exceed
_____ in length. ANS: 5 feet
In a single treatment facility the central supply systems shall contain a minimum of _____ equal headers,
of one or more cylinders with each header containing a minimum of an average days supply. ANS: 2
