ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: The Department that certifies the transportation of refrigerant is the

  • RSES
  • EPO
  • DOT
  • EPA

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

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

3: When systems are protected by a high pressure relief device, the compressor's pressure limiting device shall be set at or below ____ % of the operating pressure of the high side relief device.

  • 110
  • 100
  • 90
  • 80

4: Setting a pressure relief device shall not exceed ___ of the design pressure

  • 75%
  • 80%
  • 100%
  • 90%

5: What must be done if refrigeration lines pass through a concrete floor?

  • installed through a pipe casing
  • moisture barrier
  • insulated
  • leak checked

6: What must be done to refrigerant pipes before being buried?

  • Coated
  • Leaked checked
  • Certified
  • Encased

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

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

8: Which occupancy can ammonia be used in?

  • redifential
  • industrial
  • depends on the quantity of freon
  • commercial

9: No open flames are allowed in the machinery room unless?

  • Approved by the authorized person
  • Never can be allowed
  • Only when combustion air is provided from outside of the machinery room
  • Approved by the installing contractor

10: Machinery rooms must be vented to ______?

  • basement
  • outdoors
  • neutralizing tank
  • unoccupied spaces

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

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

12: A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)

  • illegal occupancy
  • institutional occupancy
  • public assembly occupancy
  • commercial occupancy

13: What type of relief valve is used on low pressure centrifugal compressor systems?

  • Spring-loaded relief valve
  • Rupture disc
  • Purge relief
  • None of the above

14: An example of direct system is

  • rooftop unit
  • chiller
  • absorber
  • none of the above

15: Which of the following is an inorganic refrigerant?

  • R-22
  • Ammonia
  • Chlorofluorocarbons
  • All of the above

16: 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.

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

17: A declaration test is needed when the system contains more than

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

18: All welding done on any refrigeration system or piping covered by 522 CMR 9.00 shall be performed by a according to Section IX of the ASME code

  • licensed welder
  • competent welder
  • licensed technician
  • welder qualified

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

  • 5
  • 1
  • 3
  • 2

20: 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

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

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

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

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

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

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

24: Large mercantile occupancy is

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

25: A High-Probablity system

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