ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: How many groups of refrigerants are there?

  • 5
  • 7
  • 1
  • 3

2: How are refrigerant blends classified?

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

3: A machine room with a refrigerant system using ammonia shall

  • be provided with a continuously operated ventilation system
  • be considered a non-hazardous location in accordance with National Electrical code
  • have no flame producing apparatus permanently installed and operated
  • All of the above

4: 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

5: The certificate of inspection

  • shall be $20 and an additional fee of $1 for each tone above 20 tons
  • shall be authorized by a notarized insurance company
  • shall be posted and protected from dirt, water, and other elements
  • shall be posted on the compressor shell or electrical panel at the unit

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

  • 550 lbs
  • 660 lbs
  • 55 lbs
  • 330 lbs.

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

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

8: When must refrigeration system covered by the code be inspected?

  • Annually and when installed
  • Upon installation
  • Not required
  • Annually

9: A restaurant is classified as a

  • public assembly occupancy
  • commercial occupancy
  • large mercantile occupancy
  • mixed occupancy

10: A professional or office building would be considered what type of occupancy?

  • mercantile
  • commercial
  • public assembly
  • business

11: Joints in refrigeration piping must be _____ before being covered?

  • Insulated
  • Inspected
  • Leak tested
  • Pressurized

12: How many refrigerant classifications are there for toxicity?

  • 2
  • 3
  • 1
  • 5

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

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

14: Which refrigerant class listed below is the most flammable?

  • C3
  • A2
  • A3
  • B2

15: Pressure vessels with an internal volume of 3 cubic feet or more

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

16: Fusible plugs shall not be used with pressure vessels of

  • 3 cubic feet or more
  • 15 cubic feet or more
  • 15 square feet or less
  • 3 cubic feet or less

17: How many refrigerant classifications are there for flammability?

  • 1
  • 7
  • 2
  • 3

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

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

19: When a refrigeration or air conditioning system is installed

  • it shall be approved by the owner for proper operation.
  • it shall not be operated below prescribed pressures
  • a field inspection shall be made before it is put into service
  • the form of certificate shall be authorized by the Department of Pubic safety

20: When can recovered refrigerants be reused?

  • They can't
  • Only when used in original owner's equipment
  • Only if used in 30 days of recovery
  • None of the above

21: The dial of a pressure gauge, when installed on the high side of a system be graduated 1.2 times the designed pressure.

  • True
  • False

22: 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)

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

23: Joints in piping for refrigeration containing parts must withstand temperatures of ___?

  • 800F
  • 1000F
  • 600F
  • 700F

24: R-12. R-22, and R-40 are considered Group I refrigerants.

  • True
  • False

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

  • aluminum
  • zinc
  • magnesium
  • all of the above