ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What is R-22?

  • HFC
  • Chlorodifluoromethane
  • CCFCM
  • Chlorofluoromethane

2: Name an HCFC refrigerant(s):

  • R-22
  • R-123
  • R-11
  • both a & b

3: Before you change the type of refrigerant in a refrigeration system, what three things must be done?

  • Place sign, check for leaks, and insulate suction line
  • Make sure its compatible, notify owner, and notify AHJ.
  • you can never change refrigerants
  • Nothing must be done

4: R-22 is considered a(n)

  • HFC
  • HCFCH
  • CFC
  • HCFC

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

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

6: How many flammability classifications are refrigerants in?

  • 5
  • 2
  • 7
  • 3

7: Machinery rooms must be vented to ______?

  • basement
  • outdoors
  • unoccupied spaces
  • neutralizing tank

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

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

9: How many different groups of refrigerants are there?

  • 7
  • 15
  • 3
  • 11

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

  • 75%
  • 80%
  • 90%
  • 100%

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

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

12: Joints in piping for refrigeration containing parts must withstand temperatures of ___?

  • 600F
  • 800F
  • 1000F
  • 700F

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

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

14: The certificate of inspection

  • shall be posted and protected from dirt, water, and other elements
  • shall be posted on the compressor shell or electrical panel at the unit
  • shall be $20 and an additional fee of $1 for each tone above 20 tons
  • shall be authorized by a notarized insurance company

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

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

16: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.

  • 50
  • 15
  • 75
  • 55

17: All electrical work done on refrigeration systems must comply with

  • Department of Energy
  • NEC and Massachusetts Modifications
  • OSHA
  • ASHREA-15 Section 9.2.1

18: What section governs pressure vessels?

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

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

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

20: Where are the three places that the discharge from an ammonia relief valve be piped?

  • atmosphere, tank containing water, where the A.H.J. indicates
  • underground, into drain, into mechanical room
  • to chemical neutralizing tank only
  • none of the above

21: R-717 is

  • water
  • carbon dioxide
  • ammonia
  • trichloromethane

22: Ammonia can come in contact with _______ ?

  • Copper
  • Copper tubing
  • Aluminum
  • Brass

23: The dial of a pressure gauge, when installed on the high side of a system be graduated 1.2 times the designed pressure.

  • True
  • False

24: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?

  • fusible plug
  • relief valve
  • rupture disc
  • all of the above

25: Stop valves shall not be permitted between the system and the

  • relief valve
  • bleed valve
  • condenser
  • service valve