ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

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

2: The certificate of inspection

  • shall be authorized by a notarized insurance company
  • 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 posted and protected from dirt, water, and other elements

3: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?

  • 100
  • 1,000
  • 100,000
  • 10,000

4: Refrigerant restricted in 2004 but used for transition for decades:

  • R-11
  • R-123
  • R-134A
  • R-22

5: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

6: 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

7: A 3-cubic foot receiver must have what type of relief valve?

  • fusible plug
  • relief valve
  • rupture device
  • none of the above

8: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed

  • 500 lbs
  • 660 lbs
  • 330 lbs
  • 55 lbs

9: Industrial occupancy is

  • a premise or that portion of a premise that is not open to the public, where access by authorized persons is controlled, and that is used to manufacture, process, or store goods, such as chemicals, food, ice, meat, or petroleum.
  • is a premise or that portion of a premise where large number of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • Both a and b are correct

10: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 25
  • 22
  • 66
  • 50

11: A room having machinery but no flame producing apparatus permanently installed and operated is considered a

  • Class A machinery room
  • Class M machinery room
  • Class T machinery room
  • Class B machinery room

12: What type of material can't be used on the outlet of a relief valve?

  • Copper
  • Magnesium alloy
  • PVC
  • Stainless steel

13: What refrigerant were phased out in 2004?

  • R-134a
  • R-12
  • R-22
  • R-11

14: Refrigeration piping before being buried shall be

  • leak tested
  • encased in pipe duct
  • pressure tested
  • All of the above

15: Pressure vessels of 10 cubic feet or more gross volume shall use

  • at least one rupture member
  • a dual pressure-relief valve if charging into the atmosphere
  • at least three means of discharge and/or rupture discs
  • both a and b are correct

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

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

17: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.

  • 75
  • 20
  • 50
  • 15

18: How much clearance do you need around the perimeter of electrical panels?

  • 36"
  • 18"
  • 24"
  • 12"

19: 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.

  • 100
  • 110
  • 80
  • 90

20: Indirect systems using Group II refrigerants

  • shall be used in refrigeration system less than 1,000 lbs
  • shall have all refrigerant containing parts except piping, installed in a Class T machine room
  • shall be used in refrigeration system in excess of 1,000 lbs
  • shall be used for mechanical equipment only

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

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

22: 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.

  • 15
  • 50
  • 75
  • 55

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

  • 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
  • Section XIII Division of the ASME Boiler & Pressure Code

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

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

25: Halogen refrigerants are corrosive to which type of metal?

  • copper
  • stainless steel
  • black iron
  • magnesium