ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: How many different groups of refrigerants are there?

  • 11
  • 7
  • 15
  • 3

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

  • True
  • False

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

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

4: Machinery rooms must be vented to ______?

  • basement
  • outdoors
  • unoccupied spaces
  • neutralizing tank

5: Field Inspections of refrigeration and A/C systems in Massachusetts shall be made by

  • District Engineering Inspectors
  • Commissioned Inspectors
  • Master licensed Technician
  • both a or b

6: Name a CFC refrigerant(s):

  • R-11
  • R-12
  • R-123
  • both a & b

7: Halogen refrigerants are corrosive to which type of metal?

  • stainless steel
  • black iron
  • magnesium
  • copper

8: What refrigerant doesn't have to be classifted?

  • R-134a
  • R-711
  • R-718
  • R-717

9: A relief valve shall be located at least ___ above grade.

  • 15'
  • 36'
  • 25'
  • 10'

10: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.

  • 50
  • 20
  • 75
  • 15

11: What kind of material can't be used on the outlet of a relief valve?

  • Stainless Steel
  • Aluminum
  • PVC
  • Copper

12: A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)

  • institutional occupancy
  • commercial occupancy
  • public assembly occupancy
  • illegal occupancy

13: A plug containing an alloy that will melt at a specific temperature to relief pressure is a

  • rupture plug
  • relief plug
  • fusible plug
  • fusion plug

14: Large vessels containing refrigerant ______________________ from using two or more pressure-relief devices in parallel to obtain the required capacity.

  • shall be prohibited
  • of Group B2 refrigerant shall be prohibited
  • containing R-11, R-123 & R-717 exclusively shall not be prohibited
  • shall not be prohibited

15: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed

  • 660 lbs
  • 330 lbs.
  • 550 lbs
  • 55 lbs

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

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

17: Where must a refrigeration contractor's license number be displayed?

  • Uniforms, checks, and invoices.
  • Trucks, license plates, and uniforms
  • Truck, office, every job, and on all equipment
  • Trucks, invoices, and advertising

18: Halogenated refrigerants cannot be used with what material?

  • Aluminum
  • Stainless steel
  • Magnesium alloy
  • Copper

19: Name three things that must be done when changing refrigeration lubricant?

  • Nothing must be done
  • You can't change lubricants.
  • Place sign, check for leaks, insulate
  • Make sure it's compatible, notify owner, notify AHJ

20: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant

  • does not require a pressure-limiting device
  • shall be inspected by the Boiler of Inspectors bi-annually
  • shall have a pressure limiting device and a pressure relief valve installed
  • shall have a pressure limiting device installed on the high side of the system

21: The main purpose of a refrigerant detector in a machinery room is to

  • inform there is a refrigerant leak int he system
  • detect toxins in the air caused by a refrigerant leak
  • to set off an alarm when there is refrigerant present inside the room
  • all of the above

22: Large mercantile occupancy is

  • a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.

23: Can you use Ammonia in industrial applications?

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

24: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 22
  • 18
  • 50
  • 33

25: R-12. R-22, and R-40 are considered Group I refrigerants.

  • True
  • False