ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • Leaked checked
  • Encased
  • Certified
  • Coated

2: What is the refrigerant dichlorodifluoromethane?

  • R-123
  • R-22
  • R-134A
  • R-12

3: What would be the classification of a church?

  • Place of assembly
  • Large mercantile
  • Institutional
  • Industrial

4: Joints in refrigeration piping must be _____ before being covered?

  • Leak tested
  • Insulated
  • Pressurized
  • Inspected

5: 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 liquid side of the system
  • the vapor side of the system
  • high side of the system

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

  • Copper
  • Stainless Steel
  • Aluminum
  • PVC

7: Halo-carbon refrigerants cannot be used with what material?

  • Aluminum
  • Magnesium alloy
  • Stainless Steel
  • Copper

8: How many refrigerant classifications are there for toxicity?

  • 2
  • 3
  • 1
  • 5

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

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

10: Who approves containers for refrigerants?

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

11: 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

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

  • boiler
  • evaporator
  • outside the machinery room
  • compressor

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

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

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

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

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

  • Large mercantile
  • Place of assembly
  • Industrial
  • Instituional

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

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

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

  • True
  • False

18: The discharge relief valve is located (9.4.6)

  • between the compressor and oil separator
  • between the compressor and the stop valve
  • between the compressor and reciever
  • on top of the condensor

19: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

20: What is R-22?

  • Chlorofluoromethane
  • HFC
  • Chlorodifluoromethane
  • CCFCM

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

  • 50
  • 22
  • 33
  • 18

22: An example of direct system is

  • rooftop unit
  • chiller
  • absorber
  • none of the above

23: 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
  • ammonia
  • Lithium bromide
  • HCFC-123

24: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a

  • commercial occupancy
  • public assembly occupancy.
  • business occupancy
  • mercantile occupancy

25: No open flames are allowed in the machinery room unless?

  • Only when combustion air is provided from outside of the machinery room
  • Never can be allowed
  • Approved by the installing contractor
  • Approved by the authorized person