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Worksheets2024 Practice Test #1
Total questions: 100
Worksheet time: 50mins
Mechanical exhaust for central supply locations shall not be less than __________.
50 cfm
72 cfm
100 cfm
500 cfm
Pipe labels shall NOT be located at which of the following?
At least once above every room
On horizontal piping only
On both sides of walls or partitions
In every story height traversed by risers
It is the responsibility of the __________ to furnish documentation, certifying that all installed piping materials are cleaned for oxygen service.
Authority having jurisdiction
Installer
Contractor
Verifier
A(n) __________ can be used as a substitute for the EOSC at a category 1 facility.
Bulk oxygen source
Emergency plan
In-building emergency reserve
Main line valve
A valve installed in each medical gas and vacuum piping system, shall be tested to verify which of the following?
Date of installation
Proper operation and rooms or areas of control
Flow and pressure drops
Pressure range
Refer to diagram 3. What is the minimum distance requirement at letter D?
10 feet
15 feet
20 feet
25 feet
The Medical-Surgical Vacuum exhaust shall be located ____________________.
indoors with diffusers
outdoors
on a roof with water dilution
in a confined area
Instrument air systems with standby headers shall be alarmed at all master panels, just before the reserve begins to supply the system indicating __________________.
high output temperature
reserve in use
compressor failure
all of the alarms will be indicated
Medical air receivers shall comply with Section _______, Unfired Pressure Vessels, of the ASME Boiler and Pressure Vessel Code.
VII
VIII
IX
XI
Initial inspection and testing of cryogenic fluid central supply systems, shall be conducted by a party technically competent, and who meets the requirements of ASSE/IAPMO/ANSI________.
6030
6035
6050
6055
The Medical-Surgical Vacuum exhaust shall be located ____________________.
at a level different from air intakes
at a level different from other exhausts
at a level different fron vacuum inlets
at the same level as vacuum inlets
An EOSC is not required if a facility has which of the following?
A bulk oxygen system sufficient for 30 day’s supply
An in-building emergency reserve header sufficient for 1 hour normal operation
The bulk oxygen is remote from the building served
An in-building emergency reserve header sufficient for 1 day's normal operation
Policies shall be established and maintained that permit the __________ to supersede the requirements of NFPA 99, in order to satisfy the emergency needs of the patient.
authority having jurisdiction (AHJ)
attending medical professional
governing body
operations manager
Manufactured assemblies employing flexible hose shall not be labeled with __________.
Color code
Standard pressure
System name or symbol
Date of installation
Which is a permitted use of the medical-surgical vacuum system?
Liquid or debris disposal
Non-medical or non-surgical applications
Waste anesthetic gas disposal
Vacuum steam condensate return
When brazing dissimilar metals NPS ____ and smaller, flux coated brazing rod shall be permitted to be used.
3 inch
1 inch
3/4 inch
1/2 inch
Refer to diagram 4. The valve labeled #15 is a __________.
Future connection
Service connection
Dead end connection
Zone valve connection
Final line filters for instrument air shall be rated for a minimum of _____ percent efficiency at _____ micron.
98% @ .01
100% @ .01
98% @ .10
100% @ .10
Vacuum pumps dedicated for WAGD service, shall be designed of materials, and using lubricants and sealants that are inert in the presence of __________________.
oxygen
nitrous oxide
halogenated anesthetics
all of the answers listed are correct
Which of the following shall be installed to allow modification of lateral branch piping from a main or riser without shutting down the entire main, riser or facility?
In-line valve
Main control valve
Service valve
Zone valve box
When PVC plastic is used in a category 1 dental vacuum system, it shall be ___________.
schedule 20
schedule 40
schedule 80
schedule 40 or schedule 80
What is the minimum flow coefficient of a 1" positive pressure valve?
31
30
17
110
Fittings, valves, and other components for oxygen use in a Category 1 distribution system, shall be __________ until prepared for installation.
Delivered sealed, labeled, and kept sealed
Kept at a minimum inventory level
Stored in a locked room or secure facility
Plugged or capped by the manufacturer
Instrument air systems with standby headers shall be alarmed at all master panels, just before the reserve falls below one average hour’s supply indicating __________________.
system failure
reserve in use
reserve low
all of the alarms will be indicated
Liquid containers shall have additional product identification (such as a 360 degree wrap-a-round tape for medical liquid containers) visible from all directions with a minimum of ______ inch high letters.
1
2
3
4
The locations for medical gas central supply systems and storage of positive pressure gases, excluding cryogenic fluid central supply systems, requiring heating to maintain compliant enclosure temperatures, shall meet which of the following requirements?
Compliant fuel-fired heating equipment permitted in the same room
If in a secured location, racks and chains are not required
In-room heating element maximum temperature of 266 degrees F
Shall be under continuous surveillance
Locations for central supply systems (excluding fluid central supply systems) shall meet which of the following requirements?
If indoors shall have interior finishes of noncombustible or limited combustible materials
Shall be constructed with access to move equipment and cylinders
Shall be provided with lockable doors, gates or able to be secured
Required to meet all that are listed
A standard gauge pressure of 160-185 psi applies to which of the following?
Laboratory vacuum
Laboratory air
Non-medical air
None of the systems listed
Power for local alarms shall be powered from essential electrical system that is used to power the _____.
lighting
fire alarms
air compressors
ventilation
One area alarm panel shall be acceptable to monitor multiple rooms located_________________.
within the same facility
within an immediate vicinity
on more than one floor
within multiple buildings
Oxygen concentrator supply systems used as all three sources of supply shall include an oxygen concentration monitor, sampling gas on the patient side of the line pressure controls, and on the source side of the source valve. What is the capability required for the monitor?
Monitoring 91% oxygen with + 1.0% accuracy
Monitoring 93% oxygen with + 1.0% accuracy
Monitoring 95% oxygen with + 1.0% accuracy
Monitoring 99% oxygen with + 1.0% accuracy
Under normal operation only ________ dryer(s)-filter(s)-regulator sequence(s) shall be open to airflow, with the other sequence(s) valved off.
1
2
3
4
A ______ inch sample port shall be provided downstream of the final line pressure regulators, dew point monitor and carbon monoxide monitor, and upstream of the source valve, to allow for sampling of the medical air.
1/8
1/4
3/8
1/2
When purging a system for brazing, the purging gas source shall be monitored, and the installer shall be _______________ when the source content is low.
audibly alerted
notified by supervision
responsible for replacing the cylinder
visually alerted
Which of these would not breach the vacuum system?
Addition of a system component
Removal of a system component
Replace a system component with an identical one
Testing a system component with a leak detecting solution
Piping between the vacuum pump and the source shut off valve shall be permitted to be ________.
Brass pipe
Galvanized steel pipe
Black steel pipe
Any of the listed materials
Station outlets or inlets shall not be place on the ________ of Medical Gas Rail (MGR) assemblies.
top
bottom
ends
top, bottom or ends
Medical air compressor intake shall be located outdoors a minimum distance of ______ from all vehicular exhausts and noxious fumes.
10 ft
20 ft
25 ft
There is no distance requirement
Shutoff Valves do NOT need to be labeled with _____________.
name or chemical symbol
gas or vacuum system color code
room or area controlled
normal operating pressure
Medical Gas Rail (MGR) assemblies shall connect to the pipeline, through fittings that are ___ to the pipeline.
soldered
brazed
glued
threaded
Cryogenic fluid central supply systems shall include _______, with capacity determined after consideration of the customer usage requirements, delivery schedules and proximity to alternative supplies.
one or more main supply vessels
two or more main supply vessels
three or more final line regulators
four or more reserve headers
The mandatory master alarm panels shall be arranged such that the failure of either panel would __________ any signal on the other panel.
disable
not disable
actuate
notify
Manufactured assemblies for medical gas systems employing flexible hose shall use flexible connectors with a minimum burst gauge pressure of how many psi?
500
1000
1500
2000
To prevent damage when testing outlets/inlets, you must use which of these components?
O-rings/seals
Interchangeable outlet/inlet adapters
Gas-specific adapters as described by the manufacturer
Miscellaneous fittings as required
Nonstationary booms and articulating assemblies, utilizing flexible connectors, shall be tested for leaks every ______ months.
6
12
18
24
What is the standard gauge pressure (psi) for oxygen gas service?
0-300
50-55
15-30
It varies with system type
For medical-surgical vacuum systems greater than 5 in. HgV, piping shall be hard-drawn, seamless copper tube type ________.
ASTM B88
ASTM B280
ASTM B819
Any of the listed types are acceptable
What sort of treatment shall be performed BEFORE brazing cut ends of a tube used for piping medical gas?
An argon purge must be done
Cut ends must be rolled smooth or deburred
Extensions need to be added for brazing
Treatment is NOT required, they may be brazed “as is”
Local alarm panels shall be permited to be located _________________.
on or in control panels
within a monitoring device
on a separate alarm panel
at any of the listed locations
Central supply systems for medical vacuum shall be equipped with filtration sized for ________ of peak calculated demand while one is isolated.
50%
100%
150%
200%
Where installed in a down-facing position, such as in a ceiling or ceiling column, station outlets/inlets shall be __________ connectors.
D.I.S.S.
Threaded
Quick-connect
Chemetron
In a medical gas system with emergency reserve, which alarm system(s) will activate when, or just before, the changeover to the reserve supply occurs?
Area
Local
Local and Master
Master
Axially swaged fittings providing metal-to-metal seals, are suitable for service up to ____ psi.
100
300
500
1000
For medical air using liquid ring compressors, the seal water shall be ___ to control waterborne pathogens.
Treated
Hyper-chlorinated
As recommended by the AHJ
As recommended by the manufacturer
If the system (source gas) is used to verify the piping purity, it shall be tested __________.
At the most remote outlet from the renovation
At the outlet closest to the renovation
At the source equipment
Before the system tie-in
Under which of these conditions shall the instrument air reserve header cylinders be permitted to be stored with the instrument air compressor?
The mechanical equipment room does NOT contain a boiler
The medical air compressors are in the same room
The only motor-driven machinery in the room is for the instrument air equipment
The room is secured with lockable doors
A document in which the main text contains only mandatory provisions. Non-mandatory provisions are located in the appendix or annex. This is the NFPA definition for which of the following?
Guide
Procedure
Reference
Standard
Oxygen concentrator supply systems used as all three sources of supply shall include all of the following EXCEPT:
The control arrangements shall be able to maintain stable pressures within the limits of Table 5.1.11
The auxiliary source connection shall be provided and located on the source side of the source valve
The control arrangements shall be redundant, such that each component of the control mechanism can be isolated for service or replacement, while maintaining normal operation.
The system shall be protected against over pressurization
The maintenance of a Category 1 medical gas system must be performed by individuals qualified to perform these operations. What certification must the individual/individuals obtain?
ASSE 6040
ASTM 6010
AWS B-22
CGA G-4.1
Who is the individual who is responsible for reviewing all inspection and testing reports prior to the use of new, additional, renovated or temporary medical gas and vacuum installations?
Inspector of record
Installing contractor
On-site verifier
Responsible facility authority
The minimum backfilled cover above the top of the pipe or its enclosure, for buried piping outside of buildings shall be 36 in., except that a minimum cover shall be reduced to ____ inches where there is no potential for damage from surface loads or surface conditions.
16
18
20
24
When vacuum systems are used to serve WAGD systems, the medical-surgical vacuum source shall be labeled to indicate ______________.
vacuum only
WAGD only
the system with the highest vacuum level
both vacuum and WAGD
Refer to Diagram #12, identify letter A.
Riser valve in a closed position
Riser valve in an open position
Service valve in a closed position
Service valve in an open position
Which of the following conditions must be met where medical gas and vacuum systems are installed by
non-certified personnel?
An installer certified to ASSE 6010 must be present to oversee the installation work
An inspector certified to ASSE 6020 is on the jobsite to inspect the installation work
The installer must be an employee of an authorized Medical Gas contractor, and only while an installer certified to ASSE 6010 is present to oversee the installation work
Installation by anyone other than 6010 certified personnel is NOT permitted
Which of the following is labeled incorrectly?
Medical-surgical vacuum with green background and white text
Oxygen with green background and white text
Medical air with yellow background and black text
Medical-surgical vacuum with white background and black text
Which level of sedation shall be administered by a Category 3 medical gas system?
General anesthesia
Deep Sedation
Minimal or no sedation
Moderate sedation
NFPA 99 requires that flexible connectors, connected with manufactured assemblies, shall include all EXCEPT which of the following?
Date of installation
Name of vacuum or gas systems
Negative operating pressure
System color code
NFPA specifies that the medical gas piping system shall be protected all EXCEPT which of the following?
Corrosion
Combustible liquids
Physical damage
Freezing
All piping for station outlets & inlets shall be identified as to the name or __________ for the specific medical support gas or vacuum provided.
Chemical symbol
Color
Operating pressure
Style (quick-connect or DISS)
The quality of instrument air shall include all of the following EXCEPT________________.
be filtered to .01 micron
be isolated and kept below 40 psig
be free of liquids
be dry to a dew point of -40° F
In a category 2 dental system oxygen piping shall be ___________.
1 size smaller than nitrous oxide
1 size larger than nitrous oxide
the same size as nitrous oxide
there are no requirements for oxygen and nitrous oxide in a category 2 system
Threaded fittings shall NOT be approved for connections for _______ in medical gas and vacuum systems.
medical gas and vacuum distribution piping
medical gas and vacuum gauges
medical gas and vacuum alarm devices
source equipment on the source side of the source valve
After completion of all installer-performed tests, the code allows for which of these methods to be used to determine that no cross-connection exists?
Individual pressurization to 150 psi
Individual pressurization and pressure differential
Pressure differential of 30 psi above normal operating pressure
None of the options are allowed
Which of these is a requirement for area alarm panels?
Monitored 24/7 continuously
Provide visual and audible indication
Provided in area of air compressors and vacuum pumps
Shall indicate if pressure drops or increases by 10 percent
The maximum support spacing for 3/4" plastic pipe used in dental vacuum systems is ________.
3 feet
4 feet
5 feet
6 feet
Where liquid ring compressors having water-cooled heads or water-cooled aftercoolers are used, the receivers shall be equipped with a high water level sensor that activates a(n) ________ alarm indicator.
area
local
master
pressure
The ____________ or assembly shall close automatically to stop the flow of gas or vacuum,
when the _____________ or assembly is removed.
Primary, secondary
Secondary, primary
emergency, secondary
secondary, emergency
Liquid ring compressors, service water and seal water shall be treated to control ________.
Waterborne pathogens
Chlorine
Hyper-chlorination
Shall be treated to control all that is listed
Copper tubing for vacuum or WAGD service that is installed along with any medical gas tubing, shall prior to installation, be _________________ or otherwise identified to preclude using materials or installation procedures, in medical gas that are not suitable for oxygen
brazed and annealed
soldered and quenched
predominantly labeled
cleaned and stamped
For the initial pressure test for pressure gases and vacuum systems, the test pressure shall be 1.5 times the normal operating pressure, but not less than a gauge pressure of ________.
50 psi
100 psi
150 psi
60 psi
Which of the following shall require the installer to provide documentation prior to any installation of a Category 2 medical gas piping system?
Brazed piping
Dental equipment hook up
Future piping connections
Installer braze log
Manifolds for gas cylinders & manifolds for cryogenic liquid containers share which of these requirements?
Each header shall have a minimum of 3 connections
Each manifold shall be located indoors
Primary & secondary headers shall be located in the same enclosure
The reserve headers shall provide sufficiently for one average day
Which of these is a requirement for a station outlet?
A secondary demand valve
A primary valve
A primary valve and a secondary valve
A primary optional in-line
Brazed joints shall be the __________ type.
hub and spigot
flanged
grooved
socket
Refer to diagram 4. What is the item at #3?
Relief valve
Particulate filter
Alarm sensor
Demand check fitting
Which of the following is NOT required of computer systems used as a substitute master alarm in a
medical gas or vacuum alarm system?
Computer systems shall be permitted to communicate directly to the sensors/switches, in the same manner as an alarm panel, if operation of another alarm panel is not impaired.
Operating programs used to substitute for medical gas alarms, shall be allocated secondary priority of a life safety signal
The system shall be continuously attended by a responsible party or provide remote signaling to the responsible party
The system shall be provided with an audio alert
A signal from each ________ system shall be connected to the master alarm panels,
to indicate that a problem is present with the source equipment.
Area alarm
Pressure switch
Anesthetizing
Local alarm
Performance qualification of brazers shall remain in effect indefinitely, unless the brazer does NOT braze with the qualified procedure for longer than what period of time?
6 months
12 months
2 years
Brazing certs do not expire
Two or more medical gas piping shall NOT be interconnected EXCEPT:
For systems with the same contents with an in-line valve installed between them
For testing
For systems with the same contents with a check valve installed between them
Interconnection is never permitted
High carbon monoxide levels shall be monitored by the local alarm, and shall indicate when the medical air carbon monoxide level exceeds ____________.
5 ppm
10 ppm
15 ppm
20 ppm
If a medical gas system where the analog indicator total range is 0 to 300 psi, and the normal range was indicated in the top third, where would the needle point on the indicator?
0 to 100 psi
0 to 300 psi
100 to 200 psi
200 to 300 psi
Installers of Category 1 medical gas piping systems must be qualified to ASSE 6010. What is the certification requirement for installers of a Category 3 system?
ASSE 6010
ASSE 6020
ASSE 6030
Category 3 does not require certification
Refer to diagram 4. The item #13 would best be described as a(n) __________ valve.
In-line shutoff
Riser
Service
Main line
What valves shall be operable from a standing position, in the corridor on the same floor they serve?
Isolation valves
Service valves
Zone valves
In-line shutoff valves
In a Category 3 medical gas piping system, the master alarm panel shall be located in an area of _______.
Continuous observation
Continuous surveillance
Routine observation
Routine maintenance
The standing pressure test for positive pressure medical gas piping shall be conducted with the source valve closed, and the piping subjected to which test time and pressure?
8 hours at 150 psi
8 hours at 20% above normal operating pressure
24 hours at 20% above normal operating pressure
24 hours at 150 psi
Refer to diagram 3. What is the minimum distance requirement at letter A?
10 feet
15 feet
20 feet
25 feet
Medical air intakes shall maintain a distance of how many feet, from areas where noxious fumes can collect?
10'
15'
20'
25'
Components of manufactured assemblies shall have a flame spread index of not greater than ________ when tested in accordance with ASTM E84.
100
150
200
250
What is required if another alarm condition occurs while the audible alarm is manually silenced?
Nothing the visual indicator is still active
The visual indicator must blink
The audible signal will beep
Re-initiation of the audible signal
