NFPA99 Medical Gas questions with verified
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 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
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 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
