ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.

  • 2
  • 3
  • 1
  • 5

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

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

3: 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

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

  • Aluminum
  • Copper
  • Stainless Steel
  • PVC

5: What type of relief valve is used on a CO2 system?

  • gate valve
  • fusible plug
  • glove disc
  • rupture disc

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

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

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

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

8: What is R-22?

  • CCFCM
  • HFC
  • Chlorofluoromethane
  • Chlorodifluoromethane

9: A hotel is considered a _______ occupancy.

  • institutional
  • residential
  • commercial
  • mercantile

10: Halogenated refrigerants cannot be used with what material?

  • Magnesium alloy
  • Aluminum
  • Copper
  • Stainless steel

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

  • 33
  • 18
  • 50
  • 22

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

  • True
  • False

13: Indirect systems using Group II refrigerants

  • shall be used for mechanical equipment only
  • shall be used in refrigeration system in excess of 1,000 lbs
  • shall be used in refrigeration system less than 1,000 lbs
  • shall have all refrigerant containing parts except piping, installed in a Class T machine room

14: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

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

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

16: Low temperature systems should have what?

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

17: Refrigerant restricted in 2004 but used for transition for decades:

  • R-123
  • R-22
  • R-134A
  • R-11

18: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?

  • When it's used as part of a supply or return air system
  • When there is a space 6' or more above it
  • When there are sprinklers above
  • When its white

19: How far from the window does a relief valve need to be according to ASHRAE-15?

  • At least 40'
  • There is no minimum for relief valve and windows.
  • At least 30'
  • At least 20'

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

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

21: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.

  • True
  • False

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

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

23: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.

  • 1.2
  • 1
  • 1.5
  • 2.2

24: The color code of a tank of ammonia is

  • silver
  • white
  • lavender
  • light green

25: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.

  • 15
  • 24
  • 10
  • 18