ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Trichlorofluoromethane is the name of what refrigerant?

  • R-113
  • R-502
  • R-11
  • R-12

2: Pressure vessels with an internal volume of 10 cubic feet or more

  • shall use pressure relief devices
  • shall use rupture discs or duel pressure relief valves
  • shall use fusible plugs
  • shall use pressure relief devices or fusible plugs

3: An example of direct system is

  • rooftop unit
  • chiller
  • absorber
  • none of the above

4: What is the minimum height refrigeration piping should be placed against walls?

  • 7.25'
  • 72"
  • 6'
  • Ceiling height

5: When must refrigeration system covered by the code be inspected?

  • Upon installation
  • Annually and when installed
  • Not required
  • Annually

6: When can recovered refrigerants be reused?

  • They can't
  • Only when used in original owner's equipment
  • Only if used in 30 days of recovery
  • None of the above

7: Which of the following are considered inorganic refrigerants?

  • R-717 and R-718
  • 410A and R-407C
  • R-500 and R-502
  • None of the above

8: Fusible plugs must have what marked on them?

  • Melting temperature in F
  • Melting temperature in C
  • Opening pressure
  • All of the above

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

  • aluminum
  • zinc
  • magnesium
  • all of the above

10: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.

  • 350
  • 100
  • 400
  • 250

11: Low temperature systems should have what?

  • High pour point
  • Low pour point
  • High viscosity
  • None of the above

12: When an inspection is needed, how often must it be done?

  • annually
  • every 36 months
  • every 24 months
  • every 18 months

13: What is Trichlorotrifluoromethane?

  • R-12
  • R-113
  • R-13
  • R-11

14: Whoever owns/uses a refrigeration or air conditioning system covered by this code

  • must notify the Department of Public Safety prior to starting the system
  • shall be licensed by the Commonwealth of Massachusetts according to CMR 522
  • shall make application for inspections to the Chief of Inspectors
  • None of the above

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

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

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

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

17: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered

  • commercial occupancy
  • public assembly occupancy
  • institutional occupancy
  • mixed occupancy

18: Before you change the type of refrigerant in a refrigeration system, what three things must be done?

  • make sure it's compatible, notify owner, notify A.H.J
  • nothing must be done
  • you can't change refrigerants
  • place sign, check for leaks, insulate

19: Ammonia is under what safety classification?

  • A3
  • B2
  • B3
  • B1

20: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?

  • fusible plug
  • relief valve
  • rupture disc
  • all of the above

21: The discharge relief valve is located (9.4.6)

  • on top of the condensor
  • between the compressor and the stop valve
  • between the compressor and reciever
  • between the compressor and oil separator

22: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.

  • 50
  • 55
  • 75
  • 15

23: When a refrigeration or air conditioning system is installed

  • it shall not be operated below prescribed pressures
  • a field inspection shall be made before it is put into service
  • the form of certificate shall be authorized by the Department of Pubic safety
  • it shall be approved by the owner for proper operation.

24: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.

  • True
  • False

25: A hotel is considered a _______ occupancy.

  • commercial
  • institutional
  • residential
  • mercantile