ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Which refrigerant replaced R-12?

  • R-407A
  • R-410A
  • R-22
  • R-134A

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

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

3: Low temperature systems should have what?

  • High pour point
  • Low pour point
  • High viscosity
  • None of the above

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

  • nothing must be done
  • place sign, check for leaks, insulate
  • you can't change refrigerants
  • make sure it's compatible, notify owner, notify A.H.J

5: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 33
  • 22
  • 18
  • 50

6: Evaporators within 18" of a heating coil must be equipped with a

  • high limit control
  • zone valve
  • low limit control
  • pressure relief device

7: How are refrigerant blends classified?

  • Based on the oil used
  • Based on best case Fractionation
  • Blends don't have to be classified
  • Based on worst case fractionation

8: 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
  • 100,000
  • 1,000
  • 10,000

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

  • 22
  • 66
  • 50
  • 25

10: R-717 is

  • trichloromethane
  • water
  • carbon dioxide
  • ammonia

11: Name a CFC refrigerant(s):

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

12: 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
  • 55
  • 75
  • 15

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

  • Stainless steel
  • Magnesium alloy
  • PVC
  • Copper

14: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • 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: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.

  • True
  • False

17: How far from the ground does a relief valve need to be?

  • At least 15' above grade
  • At least 20' above grade
  • At least 25' above grade
  • Not more than 3' above grade

18: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of

  • the high side
  • the aggregate of the high side and low side
  • 2.5 times the design pressure
  • the low side

19: How much refrigerant can be stored in a mechanical room outside of the system?

  • 150
  • 200
  • 330
  • 100

20: Group A3 refrigerants have a ______ flammability rating than Group B1 refrigerants

  • lower
  • there is no Group B1 refrigerants
  • the same
  • higher

21: Institutional occupancy is

  • a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • None of the above

22: What is the refrigerant chlorodifluoromethane?

  • R-12
  • R-123
  • R-134a
  • R-22

23: Each machinery room shall contain

  • smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
  • a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate
  • high and low pressure controls
  • a refrigerant detector located in an area where the refrigerant from a leak will concentrate

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

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

25: What would be the classification of a prison?

  • Institutional
  • Place of assembly
  • Industrial
  • Large mercantile