ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: R-717 is

  • ammonia
  • trichloromethane
  • water
  • carbon dioxide

2: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant

  • does not require a pressure-limiting device
  • shall have a pressure limiting device installed on the high side of the system
  • shall have a pressure limiting device and a pressure relief valve installed
  • shall be inspected by the Boiler of Inspectors bi-annually

3: R-22 is considered a(n)

  • HCFC
  • CFC
  • HFC
  • HCFCH

4: Halogenated refrigerants cannot be used with what material?

  • Magnesium alloy
  • Copper
  • Aluminum
  • Stainless steel

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

  • EPA
  • EPO
  • RSES
  • DOT

6: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.

  • Machinery rooms need not be vented
  • the return air ducted system
  • the outdoors
  • the mechanical room housing the refrigeration system

7: What refrigerant has zero ozone depletion

  • HFC
  • CFC
  • HCFC
  • None of the above

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

  • 24
  • 10
  • 18
  • 15

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

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

10: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?

  • When there is a space 6' or more above it
  • When there are sprinklers above
  • When its white
  • When it's used as part of a supply or return air system

11: Pressure vessels nameplate markings must be compliant with the

  • ASHRAE 34 Standards
  • CMR-588 & CMR-528
  • ASME Boiler and Pressure Vessel Code
  • All of the Above

12: A relief valve discharge capacity is rated in

  • Pounds of air per minute.
  • temperature minus pounds of air per second divided by release rate squared
  • PSIA
  • PSIG

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

  • A-3
  • B-2
  • A-1
  • C-3

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

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

15: What would be the classification of a prison?

  • Institutional
  • Industrial
  • Large mercantile
  • Place of assembly

16: A movie theater would be considered a

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

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

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

18: Can a R22 line set be reused for a 410A system and if it can be reused, what must be done to it?

  • Flush with R-11
  • Flush with RX-11
  • Flush with R-718
  • Flush with ammonia

19: Pressure vessels having design pressures of 15 psig or less shall have the strength to withstand at least ______times the design pressure.

  • 5.5
  • 2.5
  • 3.0
  • 2.0

20: R-22 falls under which safety classification?

  • B-2
  • A-2
  • A-1
  • B-1

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

  • A-1
  • A-2
  • B-1
  • B-2

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

  • Nothing must be done
  • you can never change refrigerants
  • Place sign, check for leaks, and insulate suction line
  • Make sure its compatible, notify owner, and notify AHJ.

23: Single compound Refrigerants are classified by what two criteria?

  • Temperature range and hazardousness
  • Flammability and temperature range
  • Flammability and toxicity
  • Weight and color

24: What is Trichlorotrifluoromethane?

  • R-11
  • R-113
  • R-13
  • R-12

25: 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