ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What type of pressure relief device is used on a CO2 system?

  • Glove valve
  • Gate valve
  • Fusible plug
  • Rupture disk

2: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere

  • 6.6
  • 1,000
  • 110
  • 330

3: Which refrigerant replaced R-12?

  • R-410A
  • R-22
  • R-134A
  • R-407A

4: 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

5: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 50
  • 22
  • 66
  • 25

6: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and

  • gas masks must be worn
  • explosion precautions must be taken
  • the owner shall be informed
  • no flames shall be permitted

7: When a refrigerating machinery room is used, the emergency procedures shall be posted

  • outside the room, immediately adjacent to each door
  • on a conspicuous card located near the evaporator
  • on a conspicuous card located near the compressor
  • inside the room, immediately adjacent to each door

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

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

9: What section governs pressure vessels?

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

10: A machine room with a refrigerant system using ammonia shall

  • be provided with a continuously operated ventilation system
  • be considered a non-hazardous location in accordance with National Electrical code
  • have no flame producing apparatus permanently installed and operated
  • All of the above

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

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

12: What must be done if refrigeration lines pass through a concrete floor?

  • moisture barrier
  • insulated
  • leak checked
  • installed through a pipe casing

13: Setting a pressure relief device shall not exceed ___ of the design pressure

  • 80%
  • 100%
  • 90%
  • 75%

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

  • 75%
  • 80%
  • 90%
  • 100%

15: What is a Category "D" fluid?

  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily contact
  • A typical refrigerant used on newer air conditioning and heat pump ssytems
  • Any fluid that exceeds 150 psig and has design temperature of over 366F
  • A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and design temperature is between -20F to 366F

16: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)

  • Pressure gauge
  • Temperature gauge
  • Sight glass gauge
  • All of the above

17: The color code of a tank of ammonia is

  • silver
  • light green
  • white
  • lavender

18: R-22 is considered a(n)

  • HCFCH
  • HFC
  • CFC
  • HCFC

19: How many CFMs are required per square foot of commercial office occupied space

  • .5 CFM
  • 15 CFM
  • 5 CFM
  • 20 CFM

20: 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

21: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?

  • CO Sensing
  • refrigerant sensing
  • phosgene gas sening
  • A group sensing

22: Liquid level gauges must be provided with what?

  • Automatic shut-offs
  • A relief valve
  • A low level mark
  • A red line

23: What would be the classification of a prison?

  • Institutional
  • Industrial
  • Place of assembly
  • Large mercantile

24: A movie theater would be considered a

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

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

  • R-22
  • R-113
  • R-11
  • R-12