ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What refrigerant doesn't have to be classified?

  • R-717
  • R-718
  • R-422A
  • R-134A

2: Systems containing more than 110 pounds must have stop valves located at the

  • compressor suction inlet
  • compressor discharge outlet
  • receiver inlet and outlet
  • All of the above

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

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

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

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

5: All machine rooms must be outfitted with a detector that _______?

  • activates an audible alarm
  • activates a visual alarm
  • starts the ventilation system
  • All of the above

6: 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
  • you can never change refrigerants
  • Make sure its compatible, notify owner, and notify AHJ.
  • Nothing must be done

7: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered

  • public assembly occupancy
  • institutional occupancy
  • mixed occupancy
  • commercial occupancy

8: What pipe can not be used for refrigeration?

  • K
  • N
  • L
  • M

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

  • True
  • False

10: Ammonia (NH3) is a group III refrigerant

  • True
  • False

11: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested

  • regularly
  • annually
  • bi-annually
  • quarterly

12: A person holding a license as a refrigeration technician may connect or disconnect for the purpose of installation, repair, or replacement, any electrical device or control to be a part of a refrigeration or air conditioning system, from the

  • breaker panel in
  • first disconnect in
  • load-side of the contactor in
  • 24 volt secondary side of the Class 2 transformer to the thermostat

13: Pressure vessels having an inside diameter of 6” or less shall be protected by

  • a fusible plug
  • a pressure relief device
  • either a fusible plug or a pressure relief device
  • Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified

14: What must be done to refrigerant pipes before being buried ?(8.10.4)

  • Classifed
  • Certified
  • Leak checked
  • Insulated and installed in a pipe duct (Encased)

15: What is a Category "M" fluid?

  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily content
  • A typical refrigerant used on newer air conditioning and heat pump systems
  • A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and the designed temperature is between -20F to 366F
  • Any fluid that exceeds 150 psig and has design temperatures over 366F

16: The certificate of inspection

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

17: R-22 is considered a(n)

  • HCFC
  • HCFCH
  • HFC
  • CFC

18: The Board of Boilers adopts by reference

  • the 1997 ANSI/ASHRAE Safety Code
  • MSCA Code
  • Montreal Protocol Safety Code
  • the MACS Pressure Vessel Code of Massachusetts

19: How many gallons of water per pound of ammonia do you need?

  • 15
  • 5
  • 20
  • 1

20: Pressure relief valves shall be marked with the data from

  • Section XIII Division of the ASME Boiler & Pressure Code
  • Section I Division VIII of ASME Boiler & Pressure Code
  • Section IV Division of the ASME Boiler & Pressure Code
  • Section VIII Division of the ASME Boiler & Pressure Code

21: Direct systems using Group II refrigerants

  • shall be installed in Class T machinery rooms
  • shall not be used for air condition for human comfort
  • shall be installed per instruction of the AHJ
  • shall be allowed to be used for human comfort.

22: What was the main reason for enacting the no venting rule of July 1, 1992?

  • Ozone depletion
  • Green house effect
  • Global warming potential
  • All of the above

23: Machinery rooms must be vented to ______?

  • neutralizing tank
  • unoccupied spaces
  • basement
  • outdoors

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

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

25: A hotel is considered a _______ occupancy.

  • institutional
  • residential
  • mercantile
  • commercial