ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What does safe access mean?

  • Locked doors
  • Well-lit exit signs
  • A clear unobstructed path to the equipment and controls
  • OSHA approved

2: What must be done to refrigerant pipes before being buried?

  • Coated
  • Encased
  • Certified
  • Leaked checked

3: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8

  • high side of the system
  • low side of the system
  • the liquid side of the system
  • the vapor side of the system

4: B3 refrigerants are considered

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

5: R-717 is

  • ammonia
  • trichloromethane
  • water
  • carbon dioxide

6: Which refrigerant class listed below is the most flammable?

  • B-2
  • A-3
  • A-1
  • C-3

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

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

8: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.

  • CFC-11
  • HCFC-123
  • Lithium bromide
  • ammonia

9: Dual-pressure relief devices should be installed on

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

10: Large mercantile occupancy is

  • 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 50 persons congregate on levels above of 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.

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

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

12: Pressure vessels with an internal volume of 3 cubic feet or less

  • shall use fusible plugs
  • do not need pressure relief protection
  • shall use pressure relief devices or fusible plugs
  • shall use pressure relief devices

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

  • 50
  • 33
  • 18
  • 22

14: Pressure vessels having design pressures of 15 psig or less shall have the strength to withstand at least ______times the design pressure.

  • 5.5
  • 2.0
  • 3.0
  • 2.5

15: The certificate of inspection

  • shall be posted and protected from dirt, water, and other elements
  • shall be authorized by a notarized insurance company
  • shall be $20 and an additional fee of $1 for each tone above 20 tons
  • shall be posted on the compressor shell or electrical panel at the unit

16: A class A3 refrigerant is considered

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

17: R-11 belongs to Group

  • B-1
  • B-3
  • A-1
  • A-2

18: Liquid shall not occupy more than ____ of the volume when the temperature of the refrigerant is 90F.

  • 90%
  • 80%
  • 100%
  • 75%

19: Who approves containers for refrigerants?

  • D.O.D
  • E.P.A
  • D.O.T
  • D.O.E

20: 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

21: What is an egress?

  • An escape route
  • An entrance or exit
  • A valve put on the low side of the system to prevent frosting
  • A code violation

22: Systems containing more than 110 pounds must have stop valves located at the

  • compressor suction inlet
  • compressor discharge outlet
  • receiver inlet and outlet
  • All of the above

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

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

24: A pressure relief should be located at least _______ from windows and doors.

  • 20'
  • 30'
  • 15'
  • 25'

25: Can a R22 line set be reused for a 410A system and if it can be reused, what must be done to it?

  • Flush with R-11
  • Flush with RX-11
  • Flush with ammonia
  • Flush with R-718