Mock Exam
Name: 				
Date: 				

1. An existing system that is not in strict compliance with the provisions of this code shall be permitted to be continued in use as long as the _______ has determined that such use does not constitute a distinct hazard to life.
A. engineer
B. architect
C. authority having jurisdiction
D. nursing staff
Code Section                             #

2. Cylinder and cryogenic liquid container outlet connections shall be affixed in such a manner as to be intregal to the valve, unremovable with ordinary tools or so designed as to render the attachment point ________ when removal of the outlet connection is attempted.
A. universal
B. reusable
C. unusable
D. unsuitable
Code Section                             #

3. Which of the following systems shall not be permitted to be located in an outdoor enclosure?
A. Manifolds for cryogenic liquid containers
B. Manifolds for gas cylinders
C. Medical air compressor sources
D. Bulk cryogenic liquid systems
Code Section                             #

4. What is required of the alarm system if another alarm condition occurs while the audible alarm is manually silenced?
A. Nothing, the visual indicator is still active
B. The visual indicator must blink
C. The audible signal will beep
D. Re-initiation of the audible signal
Code Section                             #

5. Cylinders in use and in storage shall be prevented from reaching temperatures
in excess of ____________.
A. 120°F
B. 125°F
C. 130°F
D. 150°F
Code Section                             #

6. Locations for central supply systems shall have electrical devices protected from ___________.
A. unauthorized use
B. moisture
C. freezing temperatures
D. physical damage
Code Section                             #

7. Mechanical exhaust for central supply locations shall not be more than ____.
A. 50 cfm
B. 72 cfm
C. 100 cfm
D. 500 cfm
Code Section                             #

8. For purposes of this code, an oxygen enriched atmosphere is an atmosphere where to total concentration of oxygen exceeds _______ by volume.
A. 23.5%
B. 23.6%
C. 19.5%
D. 93%
Code Section                             #

9. Final line pressure regulators, when used for bulk cryogenic liquid systems shall be of a ________ design.
A. straight through
B. parallel
C. balanced
D. none of the above
Code Section                             #

10. The pressure in the main line of each medical gas system, the operation and condition of the source of supply and the reserve source (if any) shall be monitored at the _______ alarm
A. local
B. area
C. master
D. all of the above
Code Section                              #

11. The instrument air dew point high alarm from each compressor site will indicate at the master alarm panels when the line pressure dew point is greater than _______.
A. -39°F
B. -22°F
C. -44°F
D. -32°F
Code Section                              #

12. Brazed joints shall be made using a brazing alloy that exhibits a melting temperature in excess of _________ to retain the integrity of the piping system in the event of fire.
A. 800°F
B. 1000°F
C. 1200°F
D. 2400°F
Code Section                              #

13. Manifolds for gas cylinders shall consist of ______ equal headers; each with one average day’s supply, but not fewer than _______ connections.
A. two – two
B. one – one
C. three – three
D. four – four
Code Section                              #

14. Manifolds for gas cylinders shall actuate a(n) ___________ signal and shall activate an indicator at all _______ alarm panels to indicate when or just before changeover from one header to the other.
A. local – master
B. master – area
C. master – local
D. area – master
Code Section                              #

15. 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?
A. area
B. local
C. local and master
D. master
Code Section                              #

16. 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. 
A. not required
B. downstream
C. upstream
D. upstream of the filter
Code Section                              #

17. 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 ?
A. 3
B. 5
C. 1
D. clearance must be 1.5x the width of the auxiliary source for service to the system
Code Section                               #

18. A(n) ___________ can be used as a substitute for the EOSC at a category 1 facility.
A. bulk oxygen source
B. emergency plan
C. in-building emergency reserve
D. main line valve
Code Section                              #

19. Final line pressure controls shall be sized to ___ of the peak calculated demand.
A. 50%
B. 100%
C. 110%
D. Not specified
Code Section                              #

20. Bulk cryogenic liquid systems shall be installed in accordance with ______.
A. CGA 50
B. CGA 55
C. NFPA 45
D. NFPA 55
Code Section                              #

21. Central supply systems for nitrous oxide and carbon dioxide using cylinders or portable containers shall be prevented from reaching temperatures lower than ___°F.
A. 20
B. –20
C. 32
D. 125
Code Section                              #

22. 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?
A. 6010
B. 6020
C. 6030
D. Category 3 does not require certification
Code Section                              #

23. When is the initial pressure test conducted by the installer?
A. after installation of the alarm sensors
B. before installation of station rough-in assemblies
C. after blowdown of the distribution piping
D. before blowdown of the distribution piping
Code Section                              #

24. In those portions of the system intended to handle oxygen at pressures greater than 350 psi, the interconnecting hose shall not contain __________ materials.
A. brass
B. copper
C. polymeric
D. stainless steel
Code Section                              #

25. The master alarm system shall activate when the pressure in the main supply wlines increase or decrease by __________ percent.
A. 10
B. 20
C. 40
D. 50
Code Section                              #

26. When designing and constructing central supply systems, the storage shall __________.
A. have a minimum of two entry/exits if outdoors
B. secure all cylinders
C. have a minimum 1-hour fire resistance rating
D. all of the above
Code Section                              #

27. The medical air dew point high alarm from each compressor site will indicate at the master alarm panels when the line pressure dew point is greater than ____________.
A. -22°F
B. -35°F
C. +35°F
D. +32°F
Code Section                              #

28. Which source shall NOT be used to power the venturri of a WAGD system?
A. instrument air
B. medical air
C. water
D. inert gas
Code Section                             #

29. For medical-surgical vacuum systems, piping shall be hard-drawn, seamless copper tube type _________.
A. ASTM B88
B. ASTM B819
C. ASTM B 280
D. any of the above
Code Section                             #

30. Which type of connectors shall connect the medical air compressors with their intake and outlet piping?
A. insulated
B. dielectric
C. compression
D. flexible
Code Section                             #

31. Medical air filters shall be sized for 100% of the system peak calculated demand and be rated for a minimum of ______ efficiency at _______ micron or greater.
A. 95% @ .5
B. 98% @ .1
C. 100% @ .1
D. none of the above
Code Section                             #

32. Where compressors that separate the oil containing section from the compression chamber are used, each compressor shall be monitored for which of the following?
A. gaseous hydrocarbons
B. high temperature
C. liquid hydrocarbons
D. both A & B
Code Section                             #

33. Joints shall be brazed within _______ hours after the surfaces are cleaned for brazing.
A. eight
B. four
C. twenty-four
D. one
Code Section                             #

34. Medical air compressor systems shall have a pressure relief valve set at ______percent above line pressure.
A. 50
B. 30
C. 40
D. 20
Code Section                             #

35. Underground piping buried outside of buildings shall be installed below the local level of frost penetration and shall be protected by a(n) _____________.
A. conduit
B. enclosure
C. cover
D. any of the above
Code Section                             #

36. What is the standard gauge pressure (psi) for nitrogen gas service?
A. 15 – 30
B. 50 – 55
C. 160 – 185
D. It varies with system type.
Code Section                             #

37. Receivers for medical air shall be equipped with _____________.
A. relief valves
B. automatic and manual drains
C. sight glass
D. all of the above
Code Section                              #

38. A wireless communication device is employed in a medical gas or vacuum warning system. Which type of supervision is required for this device?
A. A visual indicator shall be located in the maintenance/engineering
department.
B. The device shall be located at a nurse’s station
C. It will be supervised such that failure of communication shall initiate an alarm.
D. The device shall be installed at the medical gas or vacuum source
Code Section                              #

39. How many hours must the medical air compressor system be operating normally before air quality test can be performed?
A. 2
B. 8
C. 12
D. 24
Code Section                              #

40. Where medical gas systems operate at pressures other that the standard gauge pressures, which of these is required to be listed on the station outlet identification?
A. Gas registration number and a toll-free number to call for information
B. Name of the gas
C. Nonstandard operating pressure
D. Both B and C
Code Section                              #

41. Brazing procedures and brazer performance for the installation of medical gas and vacuum piping shall be qualified in accordance with _______________.
A. ASME Section IX
B. ASSE 6010
C. AWS B31.3
D. none of the above
Code Section                              #

42. In a non-anesthetizing area, on which side of a zone valve shall the area alarm pressure/vacuum sensor be located?
A. station outlet/inlet
B. source
C. NFPA 99 does not specify a requirement
D. upstream side
Code Section                              #

43. Medical air compressor air intake shall be located outdoors a minimum distance of ________ above the ground level. 
A. 10 ft
B. 20 ft
C. 25 ft
D. There is no height requirement
Code Section                              #

44. Which of the following conditions must be met where medical gas and vacuum systems are installed by non-certified personnel?
A. An installer certified to ASSE 6010must be present to oversee the installation
B. An ASSE 6020 inspector is present on the job sit to inspect the installation
C. The installer must be an employee of an authorized Medical Gas contractor
D. Installation by anyone other than 6010 certified personnel is NOT permitted

Code Section                               #

45. Central supply systems for medical vacuum shall be equipped with filtration sized for _________ of peak calculated demand while one is isolated.
A. 50%
B. 100%
C. 150%
D. 200%
Code Section                              #

46. Wooden rack for cylinder storage may be permitted under which conditions?
A. The wood must be painted
B. They are permitted with NO set conditions
C. Wooden racks are no longer permitted
D. They must be located in an area with a fire suppression system
Code Section                              #

47. NFPA 99 specifies that the medical gas piping system shall be protected against all EXCEPT which of the following?
A. Corrosion
B. Combustible liquids
C. Physical damage
D. Freezing
Code Section                              #

48. What percent of the zones shall be tested at the outlet most remote from the source to verify the piping particulate test?
A. 100%
B. 75%
C. 50%
D. 25%
Code Section                              #

49. Which of these is an NFPA 99 requirement for the labeling of pipes in a medical gas system?
A. Color coding
B. Fixed label width
C. Label shall wrap completely around the pipe
D. Reflective label
Code Section                              #

50. 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?
A. Where limited depth is not less than the minimum cup depth per ANSI/ASME
B. Only on vacuum systems
C. Only where BCuP 5 brazing rod is used
D. Only on final line connections
Code Section                              #

51. Liquid ring compressors, service water and seal water shall be treated to control_________.
A. waterborne pathogens
B. chlorine
C. hyper chlorination
D. all of the above
Code Section                              #

52. Liquid ring compressor system shall have a reserve medical air standby header (1HR) or a____________ as backup.
A. condensate trap
B. manifold
C. compressor
D. bulk system
Code Section                              #

53. The medical air intake shall be located a minimum of _____ from all vehicular exhausts and noxious fumes.
A. 10 ft
B. 15 ft
C. 20 ft
D. 25 ft
Code Section                              #

54. The medical air intake shall be located a minimum of _____ from all doors, windows or other openings in the building.
A. 10 ft
B. 15 ft
C. 20 ft
D. 25 ft
Code Section                              #

55. In a facility where medical gas or vacuum systems are present and the failure of such equipment or system Is likely to cause imminent major injury or death to patients or caregivers, the system shall be designed to meet which Category of requirements?
A. 1
B. 2
C. 3
D. 4
Code Section                             #

56. Category 1 medical-surgical vacuum sources shall, at a minimum, consist of ____________ or more vacuum pumps.
A. three
B. four
C. two
D. one
Code Section                             #

57. Who shall be responsible for developing an emergency plan in the event of medical air loss at a Category 2 facility?
A. Head of maintenance
B. Facility staff
C. Authority having jurisdiction
D. Chief engineer
Code Section                             #

58. Piping between the vacuum pump and the source shutoff valve shall be permitted to be _______.
A. brass pipe
B. galvanized steel pipe
C. black steel pipe
D. all of the above
Code Section                             #

59. Computer systems used as a master alarm shall be continuously attended or shall provide remote signaling of responsible parties through _________.
A. pagers
B. telephone
C. cell phone
D. any of the above
Code Section                             #

60. 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?
A. Medical Gas Generalist
B. Installer
C. Shutdown Coordinator
D. Verifier
Code Section                             #

61. An assembly of equipment that holds a capacity of oxygen greater than _____________is defined as a Bulk Oxygen System.
A. 3000 ft3
B. 10,000 ft3
C. 20,000 ft3
D. 28,000 ft3
Code Section                             #

62. The medical-surgical vacuum exhaust shall be turned down and screened. The screening shall be fabricated using what type of material?
A. steel mesh
B. steel wire
C. any non-corroding material
D. all of the above
Code Section                             #

63. Compressed gas cylinders must meet which of the following criteria in order to be acceptable for use in an acute health care facility?
A. Be appropriately identified by labels or stencils in accordance with CGA C-7 criteria
B. Utilize gas specific CGA connections
C. Be appropriately color coded in accordance with U.S.D.A. requirements
D. Be constructed in accordance with specifications and regulations of OSHA
Code Section                             #

64. Who shall witness the installer perform the standing pressure test?
A. Installation contractor superintendent
B. Medical gas verifier
C. The authority having jurisdiction or its designee
D. B and C
Code Section                              #

65. A patient care space is any space of a health care facility wherein patients are intended to be __________.
A. admitted or discharged
B. sent for X-rays
C. interviewed
D. examined or treated
Code Section                              #

66. Stainless tube may be joined by any methods EXCEPT which of the following?
A. Solder
B. Tungsten inert gas(TIG)
C. Gas tungsten arc welding (GTAW)
D. Metal inert gas (MIG)
Code Section                              #

67. Excluding outdoor locations, which of these is an NFPA 99 requirement for the wiring of each of the two mandatory master alarms?
A. Wired independently to the initiating device(s) for each signal
B. Without any splices
C. Alarms shall be sent to the area alarm panel in the emergency room
D. Common conductors
Code Section                              #

68. Which of the following is true of Category 1 support gases?
A. Permitted to power medical – surgical tools
B. Subject to greater hazards than present in other piped gases
C. Used for respiration
D. Both A and B
Code Section                              #

69. WAGD networks shall provide a WAGD inlet in all locations where __________ is intended to be administered.
A. Oxygen
B. Nitrous Oxide
C. Nitrogen
D. Medical Air
Code Section                              #

70. If a nonmetallic flexible connector is being used in a Category 1 health care facility to connect the manifold to the gas distribution piping, what is the maximum length (feet) permitted for the flexible connector? 
A. 5 ft
B. They shall be no longer than necessary
C. 3 ft
D. The use of flexible connectors is not permitted
Code Section                              #

71. Inspection and testing shall be performed on all new piped gas systems, additions, renovations, temporary installations or repaired systems to assure the facility that all applicable provisions of NFPA 99C have been adhered to and system integrity has been achieved or maintained. What is required of the individual doing the testing or inspecting?
A. Have two years experience
B. Have a documented procedure
C. Be a certified tester
D. none of the above
Code Section                               #

72. 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 ________high letters.
A. 1”
B. 2”
C. 3”
D. none of the above
Code Section                              #

73. Vacuum piping for ____________ shall be connected separately from the medical surgical system directly to the receiver tank through its own isolation valve and fluid trap located at the receiver.
A. Each WAGD system
B. A location requiring seismic restraint
C. The standing vacuum test
D. A teaching laboratory
Code Section                              #

74. The vacuum exhaust shall not discharge ______________.
A. on a roof
B. outside
C. in a place of public assembly
D. at a different level from air intakes
Code Section                              #

75. Which of these operations would NOT breach the vacuum system?
A. Addition of a system component
B. Removal of system component
C. Replacement of system component with an identical one
D. Testing a system component with a leak detecting solution
Code Section                              #

76. Which is a permitted use of the medical-surgical vacuum system?
A. Liquid or debris disposal
B. Non-medical or non-surgical applications
C. Waste anesthetic gas disposal
D. Vacuum steam condensate return
Code Section                              #

77. Which of the following is an instrument air quality requirement?
A. It shall be compliant with instrument Air section in ANSI/ISA S-7.0.01
B. It shall be compliant with medical air USP
C. It shall be filtered to .7 micron
D. It shall be dry to a dew point of -30oF
Code Section                              #

78. The standing pressure test for positive pressure medical gas piping shall be conducted with the source valve closed and the piping system subjected to which test time and pressure?
A. 8 hours at 150 psi
B. 8 hours at 20% above operating pressure
C. 24 hours at 20% above normal operating pressure
D. 24 hours at 150 psi
Code Section                              #

79. Instrument air systems shall be permitted to interconnect with the medical air system provided the system has __________.
A. interconnection is prohibited
B. at least two or more compressors
C. been approved by the manufacturer
D. separate source valves for each system
Code Section                              #

80. A standard gauge pressure of 160-185 psi applies to which of the following?
A. Laboratory vacuum
B. Laboratory air
C. Non-medical air
D. Instrument air
Code Section                              #

81. All fittings 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. Goop or GoJo hand cleaner
B. Trisodium phosphate or sodium carbonate
C. Water
D. A natural citrus solvent cleaner- degreaser
Code Section                              #

82. Which source shall NOT be used to power the venturri of a WAGD system?
A. instrument air
B. medical air
C. water
D. inert gas
Code Section                             #

83. Final line filters for instrument air shall be rated for a minimum of ____ percent efficiency at ____ micron.
A. 98% @ .01
B. 100% @ .01
C. 98% @ .10
D. 100% @ .10
Code Section                             #

84. A signal from each _______ system shall be connected to the master alarm panels to indicate that a problem is present with the source equipment.
A. area alarm
B. pressure switch
C. anesthetizing
D. local alarm
Code Section                             #

85. Station outlets/inlets shall be identified as to the _________ for the specific gas or vacuum provided.
A. Name or Chemical symbol
B. Name
C. Chemical symbol
D. Piping Type
Code Section                             #

86. Final line filters for instrument air shall be equipped with a _______ visual indicator showing the status of the filter element life.
A. optional
B. alternating
C. continuous
D. pulsating
Code Section                             #

87. Which of these is a requirement for area alarm panels?
A. Located at a nurses station and in the engineering department
B. Monitored 24/7 continuously
C. Provide visual and audible indication
D. None of the above
Code Section                             #

88. A valve installed in each medical gas and vacuum piping system shall be tested to verify which of the following?
A. Date of installation
B. Proper operation and rooms or areas of control
C. Flow and pressure drops
D. Pressure Range
Code Section                             #

89. Manifolds for gas cylinders shall actuate a(an) _______ signal and shall activate an indicator at all _______ alarm panels to indicate when or just before changeover from one header to the other.
A. Area; Master
B. Master; Area
C. Master; Local
D. Local; Master
Code Section                             #

90. All valves except zone valve box assemblies shall be __________.
A. located in a secure area
B. locked or latched in the operating position
C. labeled indicating contents and location served
D. all of the above
Code Section                             #

91. With the approval of the authority having jurisdiction, in what areas shall the shutoff valves be permitted to be secured to prevent inappropriate access?
A. maternity
B. psychiatric or pediatric
C. anesthetizing
D. critical care
Code Section                              #

92. New or replacement shutoff valves for medical gas pressure piping systems shall ______________.
A. be quarter turn valves 
B. be of brass or bronze construction 
C. have extensions for brazing 
D. all of the above 
Code Section                              #

93. 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?
A. 4 
B. 3 
C. 2 
D. 1 
Code Section                              #

94. In central supply systems using gas cylinders, each header shall have a ________ valve to prevent backflow and to permit service to the header.
A. Check 
B. Bypass 
C. Ball 
D. Relief
Code Section                              #

95. 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 of which of the following?
A. Main lines 
B. Branch (lateral) lines 
C. Risers 
D. Vent Lines 
Code Section                              #

96. The vertical pipes connecting the system main line(s) with the branch lines on the various levels of the facility. This is the definition of which of the following?
A. Vent Lines
B. Risers
C. Branch (lateral) lines
D. Main lines
Code Section                              #

97. Only one service valve is required for each branch off the riser, unless the number of zone valves on that branch exceeds ______ valves. 
A. 4 
B. there is no maximum 
C. 8 
D. 6
Code Section                              #

98. What valves shall be readily operable from a standing position in the corridor on the same floor they serve?
A. Isolation valves 
B. Service valves 
C. Zone valves 
D. In-line shutoff valves

Code Section                               #

99. Immediately outside each Category 1 space and anesthetizing location, there shall be located a(n)_____________ for each medical gas, vacuum and WAGD system. 
A. zone valve 
B. fire extinguisher 
C. relief valve 
D. area alarm 
Code Section                              #

100. 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?
A. Chlorine 
B. Acetone 
C. Freon 
D. Ammonia 
Code Section                              #

101. 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?
A. oil-less, dry Nitrogen NF
B. oil-free, dry Argon MD
C. any inert gas
D. oil-free, dry Nitrogen NF
Code Section                              #

102. Pipe labels shall be located at a maximum interval of how many feet?
A. 10 ft
B. 15 ft
C. 20 ft
D. 25 ft
Code Section                              #

103. Audible and visual alarm indicators shall meet which of the following requirements?
A. Testing to determine indicator function should be scheduled periodically and records maintained between testing. 
B. Individual indicators shall NOT be less than DN20 size 
C. CGA C-7 
D. The staff should be trained to operate the test button periodically and report malfunctions.
Code Section                              #

104. Station outlets that operate at pressures other than standard gauge pressure (50-55 psi or 160-185 psi for nitrogen), what is required of the outlet labeling?
A. be covered to limit access 
B. be located away from other outlets 
C. include the operating pressure along with the name of the gas 
D. none of the above
Code Section                              #

105. In compliance with NFPA 70, the new alarm wiring is being run installed underground from the initiating device at the source to a junction box located where the wiring first enters the building. NFPA 99 permits what minimum number of sets of wires to connect the initiating device with the junction box for each signal?
A. 2 
B. 3 
C. 4 
D. 1
Code Section                              #

106. Which of the following filler metals shall be used to braze copper-to-copper joints in medical gas/vacuum distribution piping?
A. BCuP series 
B. BNi series 
C. BAg series 
D. BAu series 
Code Section                              #

107. 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?
A. May be reamed 
B. May be deburred or rolled smooth 
C. May be re-cleaned 
D. none of the above 
Code Section                              #

108. To assure that all ambient air has been removed from the pipeline prior to brazing, a/an ______ shall be used to verify the effectiveness of the nitrogen purge.
A. oxygen analyzer 
B. nitrogen analyzer 
C. breathalyzer 
D. air analyzer
Code Section                              #

109. Factory installed tubes on station inlets shall be NOT less than ________ with 0.4 inch minimum inside diameter.
A. 1/4 NPS 
B. 3/8 NPS 
C. 1/2 NPS 
D. 1/8 NPS
Code Section                             #

110. The minimum backfilled cover for buried piping shall be 36 in., except that a minimum cover shall be reduced to ___________ where physical damage is otherwise prevented.
A. 24 in 
B. 16 in 
C. 18 in 
D. 20 in 
Code Section                             #

111. The installation of medical gas and vacuum systems shall be made by experienced, qualified and competent installers. The installers shall meet the requirements of ___________.
A. ASME Section IX 
B. ASSE Standard 6010 
C. AWS B31.3 
D. none of the above
Code Section                             #

112. After completion of all installer- performed tests which of the following methods shall be used to determine that no cross-connection exists?
A. Individual pressurization
B. Pressure differential
C. Both A and B
D. Either A or B
Code Section                             #

113. In an Emergency Oxygen Supply Connection the check valves are required to be constructed of which of the following materials?
A. Brass or bronze 
B. Brass, bronze or stainless steel 
C. NFPA 99 does NOT establish any material requirements for these check valves 
D. Materials per the EOSC manufacturer’s recommendations
Code Section                             #

114. Which of these is a requirement for each station inlet?
A. A secondary demand valve 
B. A primary valve 
C. A main vacuum line 
D. A primary optional in-line 
Code Section                             #

115. Medical gas central supply systems are NOT permitted to be located where?
a. Remote from the medical gas system use points 
b. Outdoors 
c. In the same storage facility as medical gas cylinders 
d. In an unlocked location 
Code Section                              #

116. Fittings, valves, and other components for oxygen use in a Category 1 distribution system shall be ___________ until prepared for installation.
a. Delivered sealed, labeled, and kept sealed 
b. Kept at a minimum inventory level 
c. Stored in a locked room or secure facility 
d. Plugged or capped by the manufacturer 
Code Section                              #

117. The purpose of the NFPA 99 Code is to provide minimum requirements for the ________ for facilities, material, equipment, and appliances, including other hazards associated with the primary hazards.
A. Engineering and architecture 
B. Maintenance and testing 
C. Performance and safe practices 
D. Both B and C 
Code Section                              #

118. The scale range of positive pressure analog indicators shall have the normal reading fall within the _________ percentage of the gauge scale.
A. 1/4
B. 1/3
C. 1/2
D. 2/3
Code Section                              #

119. What does it mean when equipment, material, or services are shown as “listed”?
A. They are identified and published by an organization that is acceptable to the authority having jurisdiction. 
B. They have been found tolerable for the purpose described in the manufacturer’s specifications. 
C. They have been tested and approved by the construction supervisor 
D. They have been tested by a medical gas verifier 
Code Section                              #

120. To facilitate service, testing or replacement, all pressure switches and mainline gauges downstream of the source valve shall be provided with a ________________.
A. Check valve 
B. Shutoff valve 
C. Demand check fitting 
D. D.I.S.S. fitting 
Code Section                              #

121. Manufactured assemblies employing flexible hose shall not be labeled with ______. 
A. Color code 
B. Standard pressure 
C. System name or symbol 
D. Date of installation 
Code Section                              #

122. The accuracy of digital indicators shall be +/- ____ % of the operating pressure at which they are used.
A. 2
B. 5
C. 4
D. 1
Code Section                               #

123. A medical gas master or area alarm panel should be set to actuate a(an) __________ indicator when the communication with an alarm-initiating is disconnected.
A. Audible 
B. Audible and visual 
C. High and low 
D. Visual 
Code Section                              #

124. Area alarms shall monitor _________ in the area served.
A. high pressure in positive pressure medical gas lines
B. low pressure in positive pressure medical gas lines
C. low vacuum pressure in medical- surgical vacuum lines
D. all of the above
Code Section                              #

125. Communication devices that do not use electrical wiring for signal transmission can use _____.
A. fiber optic 
B. wireless 
C. A & B 
D. none of the above 
Code Section                              #

126. Fittings for positive pressure medical gas systems shall be cleaned for oxygen service by _________ in accordance with CGA G-4.1.
A. the manufacturer
B. a supplier
C. a third party agency other than the manufacturer
D. all of the above
Code Section                              #

127. It is the responsibility of the _____ to furnish documentation certifying that all installed piping materials are cleaned for oxygen service.
A. authority having jurisdiction 
B. installer 
C. contractor 
D. verifier 
Code Section                              #

128. A low-pressure, vacuum-insulated vessel containing gases in liquid form. This is an NFPA 99 definition for which of the following.
A. Container 
B. Safety Can 
C. Appliance 
D. Cylinder 
Code Section                              #

129. Which of the following fittings is NOT permitted for joining vacuum distribution pipeline systems?
A. Axially swaged 
B. Non-removable push-fit 
C. Welded 
D. Memory metal 
Code Section                              #

130. Copper tube hangers for medical gas and vacuum distribution piping shall be ________.
A. supported from the building structure
B. sized for copper tube
C. plastic coated in potentially damp locations
D. all of the above
Code Section                              #

131. Where existing, the portion of the supply equipment that automatically supplies the system when the primary and secondary are unable.
A. Back-up source
B. Secondary source
C. Emergency supply
D. Reserve supply
Code Section                              #

132. 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.
A. oxygen 
B. nitrogen 
C. nitrous oxide 
D. helium 
Code Section                              #

133. A method used to provide a source of drainage, aspiration and suction in order to remove bodily fluids from patients.
A. anesthesia 
B. negative pressure 
C. WAGD 
D. medical-surgical vacuum 
Code Section                             #

134. Heating, cooling, ventilating and process systems serving spaces or providing healthcare functions shall be provided in accordance with ______.
A. NFPA 55 
B. ASSE 6000 
C. NFPA 99 
D. ASHRAE 170 
Code Section                             #

135. A ______ is an extensive compilation of provisions covering broad subject matter or that is suitable for adoption into law independently.
A. code
B. standard
C. guide
D. none of the above
Code Section                             #

136. Metallic flexible joints are being used in the pipeline for vibration control. Which of the following is NOT required of such joints?
A. Received on the jobsite with certification of cleanliness 
B. Provided with extensions for brazing 
C. Able to withstand 1000oF 
D. Suitable for service at 150 psig or above 
Code Section                             #

137. 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?
A. 6 months 
B. 12 months 
C. 2 years 
D. Brazing certs do not expire 
Code Section                             #

138. Mock Exam Diagram 1.pdf Refer to Drawing #1. Area 2 would be classified as a _________.
A. general patient care area 
B. anesthetizing area 
C. critical care area 
D. none of the above 
Code Section                             #

139. Mock Exam Diagram 1.pdf Refer to Drawing #1. Valve #1 is a _______.
A. future valve
B. service valve
C. dead end valve
D. zone valve
Code Section                             #

140. Mock Exam Diagram 1.pdf Refer to Drawing #1. Valve #7 is the _________ where the main line enters the building.
A. service valve 
B. main line valve 
C. emergency shut-off valve 
D. source valve 
Code Section                             #

141. Mock Exam Diagram 1.pdf Refer to Drawing #1. Valves #5, 6 & 13 are _______.
A. riser valves
B. isolation valves
C. service valves
D. zone valves
Code Section                             #

142. Mock Exam Diagram 1.pdf Refer to Drawing #1. The sensor indicated at #8 is the ______.
A. master alarm sensor 
B. local alarm sensor 
C. area alarm sensor 
D. none of the above 
Code Section                              #

143. Mock Exam Diagram 1.pdf Refer to Drawing #1. Items 2 and 12 would be best described as ________.
A. master alarm sensors
B. pressure indicators
C. zone valve sensors
D. area alarm sensors
Code Section                              #

144. Mock Exam Diagram 1.pdf Refer to Drawing #1. Item #10 is a ______ valve.
A. main line 
B. service 
C. in-line shutoff 
D. riser  
Code Section                              #

145. Mock Exam Diagram 1.pdf Refer to Drawing #1. Item #4 is a ______ valve.
A. in-line shutoff 
B. riser 
C. service 
D. main line
Code Section                              #

146. Mock Exam Diagram 2.pdf Refer to Drawing #2. The minimum distance requirement at #4 is
A. 10 ft 
B. 15 ft 
C. 20 ft 
D. 25 ft 
Code Section                              #

147. Mock Exam Diagram 2.pdf Refer to Drawing #2. The minimum distance requirement at #3 is
A. 10 ft
B. 15 ft
C. 20 ft
D. 25 ft
Code Section                              #

148. Mock Exam Diagram 2.pdf Refer to Drawing #2. The minimum distance requirement at #2 is
A. 10 ft 
B. 15 ft 
C. 20 ft 
D. 25 ft 
Code Section                              #

149. Mock Exam Diagram 2.pdf Refer to Drawing #2. The minimum distance requirement at #1 is
A. 10 ft 
B. 15 ft 
C. 20 ft 
D. 25 ft
Code Section                               #

150. Mock Exam Diagram 3.pdf Refer to Drawing #3. Item 4 is a ______.
A. Relief valve 
B. Filter 
C. Sensor 
D. Demand check 
Code Section                              #

151. All gas outlets with a 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 (50 psi to 55 psi). 
____________________
Code Section                              #

152. The appropriate adapter shall be obtained from the facility or manufacturer, and high purge rates of at least 225 Nl/min (_____ SCFM) shall be put on each outlet.
A. 8
B. 9
C. 5
D. 3
Code Section                              #

153. 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).
A. 150
B. 300
C. 500
D. 600
Code Section                              #

154. The filter shall accrue no more than 0.001 g (_____ mg) of matter from any outlet tested.
A. 0.1 
B. 1 
C. 1.2 
D. 0.001
Code Section                              #

155. A minimum of 1000 L (35 ft3) of gas shall be filtered through a clean, white _____ micron filter at a minimum flow rate of 100 Nl/min (3.5 SCFM).
A. 0.5 
B. 0.45 
C. 0.55 
D. 0.47
Code Section                              #

156. Oxygen and medical air outlets serving Category 1 space shall allow a transient flow rate of 170 SLPM (____ SCFM) for 3 seconds.
A. 3 
B. 6 
C. 7 
D. 5
Code Section                              #

157. Medical–surgical vacuum inlets shall draw 85 Nl/min (_____ SCFM) without reducing the vacuum pressure below 300 mm (12 in.) gauge HgV at any adjacent station inlet.
A. 3 
B. 4 
C. 5 
D. 2 
Code Section                              #

158. Medical support gas outlets shall deliver 140 SLPM (5.0 ⁠SCFM) with a pressure drop of not more than 35 kPa (5 psi) gauge and static pressure of 1100 kPa to 1275 kPa (____ ) gauge.
____________________
Code Section                              #

Mock exam answer
1. C
2. C
3. C
4. D
5. B
6. D
7. D
8. A
9. C
10. C
11. B
12. B
13. A
14. A
15. D
16. C
17. A
18. C
19. B
20. D
21. A
22. A
23. C
24. C
25. B
26. D
27. C
28. B
29. D
30. D
31. D
32. D
33. A
34. A
35. D
36. C
37. D
38. C
39. C
40. D
41. A
42. A
43. B
44. D
45. B
46. C
47. B
48. D
49. A
50. A
51. D
52. C
53. D
54. A
55. A
56. C
57. B
58. D
59. D
60. A
61. C
62. C
63. A
64. D
65. D
66. A
67. A
68. D
69. B
70. B
71. B
72. B
73. D
74. C
75. D
76. C
77. A
78. C
79. A
80. D
81. B
82. C
83. A
84. D
85. A
86. C
87. C
88. B
89. D
90. D
91. B
92. D
93. B
94. A
95. B
96. B
97. B
98. C
99. A
100. D
101. D
102. C
103. A
104. C
105. D
106. A
107. B
108. A
109. B
110. C
111. B
112. A
113. A
114. B
115. D
116. A
117. D
118. D
119. A
120. C
121. B
122. B
123. B
124. D
125. C
126. D
127. B
128. A
129. B
130. D
131. D
132. A
133. D
134. D
135. A
136. D
137. A
138. A
139. A
140. B
141. D
142. A
143. D
144. D
145. C
146. C
147. D
148. A
149. A
150. A
151. 5 PSI
152. A
153. C
154. B
155. B
156. B
157. A
158. 160 – 185 PSI