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Worksheets2024 Practice Test #5
Total questions: 100
Worksheet time: 50mins
Instrument air systems shall be permitted to interconnect with medical air systems
provided the system has ______.
separate source valves for each system
interconnection is prohibited
been approved by the manufacturer
at least two or more compressors
The scale range of positive pressure analog indicators shall have the normal reading fall within the ______ percentage of the gauge scale.
1/4
1/3
1/2
2/3
What does it mean when equipment, material, or services are shown as listed?
They are identified and published by an organization that is acceptable to the AHJ
They have been found tolerable for the purpose described in the manufacturer’s specifications
They have been tested and approved by the construction supervisor
They have been tested by a medical gas verifier
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
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
Metallic flexible joints are being used in the pipeline for vibration control.
Which of the following is required of such joints?
Received on the jobsite with certification of cleanliness
All that are listed are required
Provided with extensions for brazing
Able to withstand 1000° F
NFPA 99 specifies that the medical gas piping system shall be protected against all EXCEPT which of the following?
Physical damage
Freezing
Combustible liquids
Corrosion
A signal from each ________ system shall be connected to the master alarm panels to indicate a problem is present with the source equipment.
area alarm
pressure switch
local alarm
anesthetizing
Where existing, the portion of the supply equipment that automatically supplies the system when the primary and secondary are unable.
Back-up source
Secondary source
Reserve supply
Emergency supply
Which of these operations would NOT breach the vacuum system?
Addition of a system component
Removal of a system component
Replacement of a system component with an identical one
Testing a system component with a leak detecting solution
Liquid ring compressors, service water and seal water shall be treated to control _________.
waterborne pathogens
chlorine
hyper chlorination
all that are listed
Cylinder and cryogenic liquid container outlet connections shall be affixed in such a manner as to be integral to the valve, un-removable with ordinary tools or so designed as to render the attachment __________ when the removal of the outlet connection is attempted.
universal
unusable
reusable
unsuitable
The medical air intake shall be located a minimum of ________ feet from doors, windows or other openings in the building.
10
15
20
25
Heating, cooling, ventilating and process systems serving spaces or providing healthcare functions shall be provided in accordance with _____________.
ASHRAE 170
ASSE 6000
NFPA 55
NFPA 99
New medical gas and vacuum pipeline distribution systems shall not be connected to the existing in-use systems, until which installer performed tests have been completed?
All
No required tests
Initial pressure
Standing pressure
New or replacement shutoff valves for medical gas pressure piping systems shall _________.
be quarter turn valves
be of brass or bronze construction
have extensions for brazing
all that are listed
The auxiliary source connection shall be _________ and secured.
permanently closed
normally closed
normally open
none that are listed
Vacuum systems deemed breached shall be subject to inspection and testing of the specific area and the area located ________ of the point of intrusion
downstream
near the surrounding area
upstream
all that are listed
Central supply systems for nitrous oxide and carbon dioxide using cylinders, shall be prevented from reaching temperatures lower than _______° F.
125
-20
20
32
Fittings with internal seals shall be permitted where they meet which of the following requirements?
Shall be brass or bronze
Shall be cleaned for oxygen service when used for patient or support gases
Shall be installed only where visible and accessible, allowing for testing and servicing
Shall be cleaned for oxygen service when used for patient or support gases, and shall be installed only where visible and accessible, allowing for testing and servicing
Copper tube hangers for medical gas and vacuum distribution piping shall be ___________.
supported from the building structure
sized for copper tube
permitted to be plastic coated in potentially damp locations
all that are listed
Where compressors that separate the oil containing section from the compression chamber are used, each compressor shall be monitored for contaminants for which of the following?
Gaseous hydrocarbons
High temperature
Liquid hydrocarbons
Gaseous hydrocarbons and high temperature
Piping between the vacuum pump and the source shutoff valve shall be permitted to be ______.
brass pipe
galvanized steel pipe
black steel pipe
any of the listed materials
An assembly of equipment for supplying compressed gas (consisting of, but not limited to, storage containers, pressure regulators, pressure relief devices,vaporizers, manifolds, and interconnecting piping) that terminates where the gas, at system pressure, first enters the main line. The storage containers are either stationary or movable and include unconnected reserves on hand at the site, and the source gas is stored as a compressed gas or cryogenic fluid. What type of system is this?
Bulk system
Compressed air system
Vacuum system
Medical gas system
A low pressure, vacuum-insulated vessel containing gases in liquid form. What is this the definition for?
Appliance
Container
Cylinder
Double insulated appliance
The medical air intake shall be located a minimum of ___ feet from all vehicular exhausts and noxious fumes.
10
15
20
25
Computer systems used as a master alarm shall be continuously attended or shall provide remote signaling of responsible parties through ______________.
pagers
telephones
cell phones
any of the listed methods
Liquid ring compressor systems shall have a reserve medical air standby by header (1HR) or a __________ as a backup.
condensate trap
compressor
manifold
bulk system
A chemical element that, at normal atmospheric temperatures and pressures, exists as a colorless, odorless and tasteless gas, and comprises about 21% of the earth’s atmosphere by volume.
Helium
Oxygen
Nitrous oxide
Nitrogen
What percent of the zones shall be tested at the outlet most remote from the source to verify the piping particulate test?
100%
75%
50%
25%
In central supply systems using gas cylinders, each header shall have a ________ valve to prevent backflow and to permit service to the header.
Relief
Ball
Bypass
Check
ASSE 6000 Annex J provides “Recommended Guidelines for Conducting Planned Medical Gas Systems Shutdown and Temporary Backfeed.” Annex J guidelines do NOT include a list of responsibilities for which types of worker?
Verifier
Medical Gas Generalist
Installer
Shutdown Coordinator
Which source shall NOT be used to power the venturi of a WAGD system?
Water
Inert gas
Instrument air
Medical air
Which NFPA code should you refer to for Life Safety?
101
90A
170
45
Receivers for medical air shall be equipped with ___________.
Relief valves
Automatic and manual drains
Sight glass
All that are listed
To facilitate service, testing or replacement, all pressure switches and main line gauges downstream of the source valve shall be provided with a _______________.
check valve
shutoff valve
D.I.S.S. fitting
demand check fitting
Which of these is an NFPA 99 requirement for labeling of pipes in a medical gas system?
Reflective label
Fixed label width
Label shall wrap completely around the pipe
Color coding
Service manuals, procedures and instructions provided by the _________ shall be used in the maintenance of equipment.
Manufacturer
ASSE
AHJ
None that are listed
A tool is allowed to be used by the installer to mechanically limit the makeup depth of the fitting to be brazed. Under what conditions is this method permitted for the installation of medical gas piping?
Where limited depth is not less than the minimum cup depth per ANSI/ASME B16.50
Only where BCuP brazing rod is used
Only on vacuum systems
Only on final line connections
The moisture concentration of the outlet test shall not exceed _____ ppm or an equivalent pressure dew point of -12° C (10° F) at a gauge pressure of 345 kPa (50 psi).
150
300
500
600
Station outlets that operate at pressures other than standards gauge pressures listed in Table 5.1.11, shall have which additional requirements for outlet labeling?
Be covered to limit access
Be located away from other outlets
Include the operating pressure along with the name of the gas
All that are listed shall apply
Those sections or portions of the piping system that serve a room or group of rooms on the same story of the facility. This is the definition for which of the following?
Risers
Vent lines
Main lines
Branch (lateral) lines
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?
Local & Master
Area & Master
Local
Master
In those portions of systems intended to handle oxygen at gauge pressures greater than _______ psi, interconnecting hose shall contain no polymeric materials.
350
435
450
375
The final connection between new piping and an existing system may be tested with the system gas, and must be checked with a leak detectant that does NOT contain which of these agents?
Ammonia
Freon
Acetone
Chlorine
According Annex D in the ASSE 6000 sufficient spare parts should be maintained to _____.
accommodate replacement of expendable parts
allow for a one month supply
allow for a one year supply
there is no requirement to maintain spare parts
Medical air dryers shall be provided with a ________ downstream of each dryer for maintenance.
sample port
relief port
bleed off valve
none of the listed parts
Which is a permitted use of the medical-surgical vacuum system?
Waste anesthetic gas disposal
Liquid or debris disposal
Non-medical or non-surgical applications
Vacuum steam condensate return
The medical-surgical vacuum exhaust shall be turned down and screened. The screening shall be fabricated using what type of material?
Steel mesh
Steel wire
Any non-corroding material
Any that are listed
The accuracy of digital indicators shall be +/- _____% of the operational pressure at which they are used.
1
3
5
7
Immediately outside each Category 1 space and anesthetizing location, there shall be located a(n) ______________ for each medical gas, vacuum and WAGD system.
area alarm
in-line valve
relief valve
none that are listed
A facility is in the planning stages of installing an emergency oxygen supply connection (EOSC). How many feet is the minimum clearance around this connection?
1
3
5
1.5 x the width of the auxiliary source for service to the system
Exists at cryogenic temperature, approximately -184.4° C (-300° F) at atmospheric pressure. It retains all of the properties of gaseous oxygen, but, in addition, when allowed to warm to room temperature at atmospheric pressure, it will evaporate and expand to fill a volume ______ times its liquid volume.
8
86
100
Greater than 800
According to the ASSE 6000, which is likely to clog vacuum piping?
Activation of reserve supply
Filter changes
New valve parts
Dust or body fluids
Medicals gas system maintenance personnel shall be required to demonstrate a basic working knowledge of all __________ listed in ASSE standard 6001, as used in NFPA 99.
braze requirements
dental equipment
installation methods
terminology
Category 1 medical-surgical vacuum sources shall, at a minimum, consist of ____ or more vacuum pumps.
1
2
3
4
Spare parts shall be maintained for all EXCEPT which of the following?
Valves
Outlets
Alarms
Brazed fittings
The vacuum exhaust shall not discharge __________________.
at a different level from air intakes
outside
in an area of public assembly
on a roof
The reserve header in a cryogenic liquid cylinder manifold system, shall have sufficient cylinder connections for an average day’s supply, but NOT fewer than how many connections?
1
2
3
4
To assure that all ambient air has been removed from the pipeline prior to brazing, a(n) ___________ shall be used to verify the effectiveness of the nitrogen purge.
oxygen analyzer
nitrogen analyzer
breathalyzer
air analyzer
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
Medical gas central supply systems are NOT permitted to be located where?
In the same storage facility as medical gas cylinders
Remote from the medical gas system use points
In an unlocked location
Outdoors
The __________ valve shall be the line separating the applicability between NFPA 55 and this code.
Source
Main
In-line
none that are listed
A minimum of 1000 L (35 cubic feet) of gas shall be filtered through a clean, white ________ micron filter at a minimum flow rate of 100 NI/min (3.5 SCFM).
0.5
0.45
0.55
0.47
Who shall witness the installer perform the standing pressure test?
Installation contractor superintendent
Medical gas verifier
The authority having jurisdiction or its designee
Medical gas inspector, or verifier, or the authority having jurisdiction or its designee
Oxygen and medical air outlets serving Category 1 spaces shall allow a transient flow rate of 170 SLP (______ SCFM) for 3 seconds.
3.5
5
6
7
The installation of medical gas and vacuum systems shall be made by experienced, qualified and competent installers. The installers shall meet the requirements of _____________.
ASME Section IX
ASSE Standard 6010
AWS B31.3
none of the listed standards meet the requirements
Compressed gas cylinders must meet which of the following criteria, in order to be acceptable for use in an acute health care facility?
Be appropriately identified by labels or stencils in accordance with CGA C-7 criteria
Be constructed in accordance with specifications and regulations of OSHA
Be appropriately color coded in accordance with U.S.D.A. requirements
Utilize gas specific CGA connections
Fittings for positive pressure medical gas systems shall be cleaned for oxygen service by _________ in accordance with CGA G-4.1.
the manufacturer
a supplier
a third party agency other than the manufacturer
all of the listed agencies are acceptable
A chemical process of oxidation that occurs at a rate fast enough to produce heat and usually light in the form of either glow or flame. What is this the definition of?
Combustion
Combustible
Friction
Ignition
Which of these is a requirement for area alarm panels?
Located at a nurses station and in the engineering department
Monitored 24/7 continuously
Provide visual and audible indication
None that are listed are required
With the approval of the authority having jurisdiction, in what areas shall the shutoff valves be permitted to be secured to prevent inappropriate access?
Psychiatric or pediatric
Critical care
Maternity
Anesthetizing
Seals necessary for the operation of the valve and prevention of leaks are _____________.
replaceable
removable
reflexible
gas specific
When designing and constructing central supply systems, the storage shall __________.
have a minimum of two entry/exits if outdoors
secure all cylinders
have a minimum 1-hour fire resistance rating
all that are listed apply
Regular preventative maintenance shall be scheduled to check the vacuum pressure performance of each medical-surgical vacuum station inlet. This schedule shall be as determined by the __________.
AHJ
Medical gas inspector
Medical gas verifier
Facility maintenance staff
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. What shall be used as a purge gas?
Any inert gas
Oil-free, dry Argon MD
Oil-less, dry Nitrogen NF
None that are listed
The system designer shall size the piping such that calculated pressure or vacuum losses across the piping as designed do not exceed ____ percent of the intended operating pressure or vacuum at the source valve.
10
15
20
25
The filter shall accrue no more than .001g (__ mg) of matter from any outlet tested.
.001
.01
.10
1.0
A standard gauge pressure of 0-300 psi, applies to which of the following?
Instrument air
Laboratory air
Non-medical air
Laboratory vacuum
Stainless steel tube may be joined by any of the following methods EXCEPT which of the following?
Tungsten Inert Gas (TIG)
Metal Inert Gas (MIG)
Solder
Gas Tungsten Arc Welding (GTAW)
The gas produced by evaporation from the secondary header in a cryogenic liquid container system, shall enter the supply system _________ of the final line regulator.
downstream
upstream
upstream of the filter
not required
Brazed joints shall be made using a brazing alloy that exhibits a melting temperature in excess of ________° F, to retain the integrity of the piping system in the event of fire.
800
1000
1200
2400
In a facility where medical gas or vacuum systems are present and the failure is likely to cause imminent major injury or death to patients or caregivers, the system shall be designed to meet which category of requirements?
1
2
3
4
Cylinders in use and in storage shall be prevented from reaching temperatures in excess of _______° F.
120
125
130
150
Which of these is a requirement for each station inlet?
A main vacuum line
A primary optional
in-line
A primary valve
A secondary demand valve
Which of the following is true of Category 1 support gases?
Permitted to power medical-surgical tools
Subject to greater hazards than present in other piped gases
Used for respiration
Permitted to power medical-surgical tools and subject to greater hazards than present in other piped gases
WAGD networks shall provide a WAGD inlet in all locations where _______ is intended to be administered.
Medical air
Nitrous oxide
Oxygen
Nitrogen
A bulk nitrous oxide system has a storage capacity of more than ________ pounds of nitrous oxide.
20,000
3,200
16,000
5,000
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. What sort of treatment is permitted of the tube ends before brazing?
May be reamed
Shall be deburred or rolled smooth
may be re-cleaned
none that are listed are permitted
Category 1 facility testing and calibration procedures shall be established, to ensure carbon monoxide monitors are calibrated _______________.
annually or more often, if recommended by the manufacturer
as directed by the administrator of the facility
at least once, every 18 months
by an independent calibration/testing company
All tools for medical gas work shall be kept separate from other tools, and kept free of grease or oil. If cleaned, only a degreaser such as ___________ is permitted.
a natural citrus solvent cleaner-degreaser
water
trisodium phosphate or sodium carbonate
Goop or GoJo hand cleaner
Manufactured assemblies employing flexible hose shall NOT be labeled with ____________.
system name or symbol
color code
standard pressure
date of installation
Bulk cryogenic liquid systems shall be installed in accordance with ________
NFPA 55
NFPA 45
CGA 55
CGA 50
When is the initial pressure test conducted by the installer?
After installation of alarm sensors
Before blow down of distribution piping
Before installation of station rough-in assemblies
After blow down of distribution piping
What is the test pressure for the initial pressure test conducted by the installer?
1.5 times the normal operating pressure
50 cfm
500 cfm
1.5 times the normal operating pressure, but not less than a gauge pressure of 150 psi
Joints shall be brazed within ______ hours after the surfaces are cleaned for brazing.
one
four
eight
twenty-four
NFPA 99 code, states that medical air may be supplied from all EXCEPT which of the following?
Instrument air compressors
Bulk containers
Medical air compressors
Reconstituted from oxygen USP and oil-free, dry nitrogen NF
Which type of connectors shall connect the medical air compressors with their intake and outlet piping?
Insulated
Compression
Flexible
Dielectric
Underground piping buried outside of buildings, shall be installed below the local level of frost penetration, and shall be protected by a(n) __________________.
conduit
enclosure
cover
any of the listed protections are acceptable
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
