ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What is the minimum size of the discharge pipe?

  • Same size as the outlet of the relief valve
  • One pipe size larger that the inlet of the relief valve
  • Depends on size of manifold
  • All of the above

2: Large mercantile occupancy is

  • a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise

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

  • Pressurized
  • Leak tested
  • Inspected
  • Insulated

4: How many different groups of refrigerants are there?

  • 15
  • 11
  • 3
  • 7

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

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

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

  • 22
  • 18
  • 33
  • 50

7: Pipe identification labels are required when the system contains more than

  • 65 lbs
  • 110 lbs
  • 55 lbs
  • 120 lbs

8: R-22 is classified as a ____ refrigerant on the safety matrix.

  • B-1
  • A-1
  • B-2
  • A-2

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

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

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

  • 15
  • 10
  • 18
  • 24

11: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?

  • Moisture indicator
  • Foot valve
  • Stop valve
  • Muffler

12: What is Trichlorotrifluoromethane?

  • R-13
  • R-11
  • R-12
  • R-113

13: Ammonia (NH3) is a group III refrigerant

  • True
  • False

14: A restaurant is classified as a

  • large mercantile occupancy
  • public assembly occupancy
  • mixed occupancy
  • commercial occupancy

15: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code

  • over pressure protection and a rupture disc
  • over pressure protection
  • Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
  • over pressure protection as well as a temperature protection device

16: How many groups of refrigerants are there?

  • 5
  • 3
  • 1
  • 7

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

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

18: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within

  • 14 days
  • 1 week
  • 30 days
  • 2 months

19: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.

  • 18
  • 36
  • 24
  • 48

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

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

21: A professional or office building would be considered what type of occupancy?

  • business
  • public assembly
  • commercial
  • mercantile

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

  • 5
  • 3
  • 1
  • 2

23: Low temperature systems should have what?

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

24: A relief valve discharge capacity is rated in

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

25: The main cause of enacting the "no vending rule" of July 1st 1992 was

  • global warming potential
  • ozone depletion
  • both a & b
  • None of the above