ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

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

2: A hotel is considered a _______ occupancy.

  • commercial
  • institutional
  • mercantile
  • residential

3: 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

  • compressor
  • outside the machinery room
  • boiler
  • evaporator

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

  • relief valve
  • bleed valve
  • condenser
  • service valve

5: Name a CFC refrigerant(s):

  • R-11
  • R-12
  • R-123
  • both a & b

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

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

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

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

8: 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
  • 550
  • 50

9: 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

10: Can ammonia be used on domestic system?

  • yes, for systems under 10 tons
  • yes
  • no, unless there is proper ventilation system installed
  • no

11: Doors communicating with outside from a mechanical room must be?

  • Self-closing, aligned, fire door
  • Self-closing, wooden, fire door
  • Self-closing, approved, fire door
  • Steel, approved, weather-stripped

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

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

13: A High-Probablity system

  • is such that a leak of refrigerant from failed connections will enter the unoccupied space
  • is such that a leak of refrigerant from failed connections will enter the occupied space
  • is a system highly likely to leak from a failed connection or component of such system
  • is such that any leak will cause injury or death to anyone within a 100 square foot area

14: What would be the classification of a prison?

  • Place of assembly
  • Large mercantile
  • Institutional
  • Industrial

15: Methyl Chloride is a halogenated refrigerant and should not come in contact with

  • aluminum
  • zinc
  • magnesium
  • all of the above

16: The color code of a tank of ammonia is

  • silver
  • white
  • lavender
  • light green

17: Single compound Refrigerants are classified by what two criteria?

  • Temperature range and hazardousness
  • Weight and color
  • Flammability and toxicity
  • Flammability and temperature range

18: Which refrigerant(s) is an HFC?

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

19: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into

  • the low-pressure side of the system
  • the high side of the system
  • the liquid receiver
  • both a and c are correct

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

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

21: Which of the following are considered inorganic refrigerants?

  • R-717 and R-718
  • 410A and R-407C
  • R-500 and R-502
  • None of the above

22: 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

23: Pressure vessels with an internal volume of 10 cubic feet or more

  • shall use pressure relief devices or fusible plugs
  • shall use rupture discs or duel pressure relief valves
  • shall use fusible plugs
  • shall use pressure relief devices

24: Machinery rooms must be vented to ______?

  • basement
  • outdoors
  • unoccupied spaces
  • neutralizing tank

25: 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.

  • ammonia
  • HCFC-123
  • CFC-11
  • Lithium bromide