ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • PVC
  • Magnesium alloy
  • Stainless steel
  • Copper

2: Where are the three places that the discharge from an ammonia relief valve be piped?

  • atmosphere, tank containing water, where the A.H.J. indicates
  • underground, into drain, into mechanical room
  • to chemical neutralizing tank only
  • none of the above

3: 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

4: 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

5: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within

  • 14 days
  • 30 days
  • 1 week
  • 2 months

6: 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
  • 55
  • 50
  • 75

7: What refrigerant has zero ozone depletion

  • HFC
  • CFC
  • HCFC
  • None of the above

8: R-410A is classified as a ____ refrigerant on the safety matrix.

  • B-2
  • A-2
  • A-1
  • B-1

9: 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

10: Ammonia can come in contact with _______ ?

  • Brass
  • Copper tubing
  • Copper
  • Aluminum

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

  • 2
  • 3
  • 1
  • 5

12: What would be the classification of a church?

  • Large mercantile
  • Place of assembly
  • Institutional
  • Industrial

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

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

14: Which refrigerant(s) is an HFC?

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

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

  • PVC
  • Aluminum
  • Stainless Steel
  • Copper

16: 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

17: What is a Category "M" fluid?

  • 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
  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily content

18: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.

  • 9.00'
  • 8'4"
  • 7.25'
  • 7.00'

19: There can be no airflow from an occupied space through a machine room unless what?

  • System is high velocity
  • System is ducted and sealed
  • Duct is not located in the ceiling
  • None of the above.

20: Who approves containers for refrigerants?

  • E.P.A
  • D.O.T
  • D.O.D
  • D.O.E

21: R-11 belongs to Group

  • A-2
  • B-3
  • B-1
  • A-1

22: Ammonia (NH3) is a group III refrigerant

  • True
  • False

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

  • 1
  • 20
  • 15
  • 5

24: _____ alloys shall not be used in contact with an halogenated refrigerants.

  • Copper
  • Zinc
  • Nickel
  • Magnesium

25: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.

  • 10
  • 24
  • 18
  • 15