ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Which refrigerant(s) is an HFC?

  • R-22
  • R-410A
  • R-502
  • All of the above

2: A hotel is considered a _______ occupancy.

  • institutional
  • mercantile
  • residential
  • commercial

3: Who is permitted to access a refrigeration machine room?

  • Any employee
  • Contractors only
  • Anyone, it's a completely safe area
  • Authorized persons only

4: A class B2 refrigerant is considered

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

5: What refrigerant has zero ozone depletion

  • HFC
  • CFC
  • HCFC
  • None of the above

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

  • True
  • False

7: Trichlorofluoromethane is the name of what refrigerant?

  • R-12
  • R-502
  • R-113
  • R-11

8: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.

  • True
  • False

9: Institutional occupancy is

  • a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • None of the above

10: The gauge thickness required on a CO2 tank construction is

  • 5/16"
  • 3/32"
  • 1/16"
  • 1/8"

11: How are refrigerant blends classified?

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

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

  • C-3
  • A-3
  • B-2
  • A-1

13: 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

14: 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 its white
  • When there are sprinklers above

15: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.

  • 100
  • 350
  • 50
  • 550

16: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

17: When a refrigeration or air conditioning system is installed

  • a field inspection shall be made before it is put into service
  • it shall not be operated below prescribed pressures
  • the form of certificate shall be authorized by the Department of Pubic safety
  • it shall be approved by the owner for proper operation.

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

  • 5
  • 1
  • 3
  • 2

19: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.

  • Machinery rooms need not be vented
  • the mechanical room housing the refrigeration system
  • the return air ducted system
  • the outdoors

20: What does safe access mean?

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

21: Pressure vessel having an inside diameter exceeding 6” with an internal pressure greater than 15psig shall be marked directly on or on the nameplate the letters _______________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • “UL”
  • “UM” and “UV”
  • “U” or “UM”
  • “UV”

22: What section governs pressure vessels?

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

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

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

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

  • R-12
  • R-113
  • R-22
  • R-11

25: Indirect systems using Group II refrigerants

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