ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Refrigerant restricted in 2004 but used for transition for decades:

  • R-11
  • R-123
  • R-134A
  • R-22

2: Who is permitted to access a refrigeration machine room?

  • Contractors only
  • Any employee
  • Authorized persons only
  • Anyone, it's a completely safe area

3: A room having machinery but no flame producing apparatus permanently installed and operated is considered a

  • Class M machinery room
  • Class T machinery room
  • Class A machinery room
  • Class B machinery room

4: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of

  • the ASME Boiler and Pressure Vessel Code
  • Section 11.3.1.5 ASHRAE 15 Standard
  • the ANSI Standard 10.7.2
  • both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5

5: Dual-pressure relief devices should be installed on

  • vessels of 3 cubic feet or less
  • vessels of 10 cubic feet or more
  • vessels of 3 cubic feet or more
  • vessels of 10 cubic feet or less

6: What refrigerant doesn't have to be classified?

  • R-422A
  • R-718
  • R-717
  • R-134A

7: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.

  • the atmosphere
  • a de-pressurized recovery tank with a silver top and yellow bottom
  • a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
  • All of the above

8: R-22 is classified as a ____ refrigerant on the safety matrix.

  • B-1
  • A-1
  • A-2
  • B-2

9: How many gallons of water do you need per pound of ammonia?

  • 50
  • 10
  • 100
  • 1

10: Indirect systems using Group II refrigerants

  • shall be used in refrigeration system less than 1,000 lbs
  • shall be used for mechanical equipment only
  • shall be used in refrigeration system in excess of 1,000 lbs
  • shall have all refrigerant containing parts except piping, installed in a Class T machine room

11: Institutional occupancy is

  • a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • None of the above

12: Evaporators within 18" of a heating coil must be equipped with a

  • high limit control
  • low limit control
  • zone valve
  • pressure relief device

13: _____ and its alloys are suitable for use with ammonia systems.

  • Aluminum
  • Copper
  • Magnesium
  • Zinc

14: _____ alloys shall not be used in contact with an halogenated refrigerants.

  • Zinc
  • Magnesium
  • Nickel
  • Copper

15: What was the main reason for enacting the no venting rule of July 1, 1992?

  • Ozone depletion
  • Green house effect
  • Global warming potential
  • All of the above

16: Methyl Chloride is a halogenated refrigerant and should not come in contact with

  • aluminum
  • zinc
  • magnesium
  • all of the above

17: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.

  • True
  • False

18: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?

  • R-113
  • R-22
  • R-11
  • R-12

19: What happens after your initial inspection of a pressure vessel?

  • There is a temporary shut-down until a final inspection can be performed.
  • Notify the AHJ to let them know that the system been inspected
  • Notify the Fire Marshal that the system has been inspected and approved
  • Inspector leaves a metal tag with a certification listed on it

20: What is R-22?

  • HFC
  • CCFCM
  • Chlorodifluoromethane
  • Chlorofluoromethane

21: When air is ducted through a machine room that services occupied space, What must be done?

  • Flanged and gasketed
  • Insulated and cross broke
  • Welded and seamed.
  • Ducted and sealed

22: Can you use Ammonia in industrial applications?

  • Yes, always
  • No, never
  • Yes, Under certain condidtions
  • When mixed with R-718

23: A class B1 refrigerant is considered

  • non-toxic and non-flammable
  • non-toxic but highly flammable
  • toxic but non-flammable
  • toxic and somewhat flammable

24: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

25: Pipe identification labels are required when the system contains more than

  • 65 lbs
  • 120 lbs
  • 55 lbs
  • 110 lbs