ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Ammonia is under what safety classification?

  • A3
  • B1
  • B2
  • B3

2: What is R-22?

  • Chlorodifluoromethane
  • Chlorofluoromethane
  • HFC
  • CCFCM

3: What section governs pressure vessels?

  • OSHA
  • Section ASHREA 34
  • Section 8 ASHREA 15 ASME unfired
  • Section 1 ASHREA 15 ASME fired

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

  • 15
  • 20
  • 1
  • 5

5: 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

6: R-22 is considered a(n)

  • HCFC
  • CFC
  • HFC
  • HCFCH

7: How are refrigerant blends classified?

  • Based on best case Fractionation
  • Based on worst case fractionation
  • Based on the oil used
  • Blends don't have to be classified

8: Where are the three places that the discharge from an ammonia relief valve be piped?

  • atmosphere, tank containing water, where the A.H.J. indicates
  • underground, into drain, into mechanical room
  • to chemical neutralizing tank only
  • none of the above

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

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

10: R-717 is

  • water
  • ammonia
  • carbon dioxide
  • trichloromethane

11: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.

  • 75%
  • 80%
  • 99%
  • 90%

12: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the

  • evaporator
  • outside the machinery room
  • compressor
  • boiler

13: Pressure vessels with an internal volume of 3 cubic feet or more

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

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

  • 330 lbs
  • 55 lbs
  • 660 lbs
  • 500 lbs

15: What would be the classification for Stop & Shop grocery store?

  • Large mercantile
  • Industrial
  • Place of assembly
  • Instituional

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

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

17: Most CFC's are

  • inert but toxic
  • toxic
  • inert
  • flammable

18: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested

  • quarterly
  • bi-annually
  • annually
  • regularly

19: A class B1 refrigerant is considered

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

20: A relief valve discharge capacity is rated in

  • PSIG
  • temperature minus pounds of air per second divided by release rate squared
  • Pounds of air per minute.
  • PSIA

21: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into

  • the low-pressure side of the system
  • the high side of the system
  • the liquid receiver
  • both a and c are correct

22: All electrical work done on refrigeration systems must comply with

  • OSHA
  • NEC and Massachusetts Modifications
  • Department of Energy
  • ASHREA-15 Section 9.2.1

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

  • Magnesium
  • Nickel
  • Zinc
  • Copper

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

  • 10
  • 1
  • 50
  • 100

25: NH3 is

  • R-508A
  • ammonia
  • lithium bromide
  • R-718