ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

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

2: Can ammonia be used on domestic system?

  • yes
  • no
  • yes, for systems under 10 tons
  • no, unless there is proper ventilation system installed

3: How many different groups of refrigerants are there?

  • 15
  • 3
  • 7
  • 11

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

  • 50
  • 22
  • 66
  • 25

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

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

6: Can you use Ammonia in industrial applications?

  • When mixed with R-718
  • No, never
  • Yes, always
  • Yes, Under certain condidtions

7: Where a refrigeration or air conditioning system is installed,

  • the form or certificate shall be authorized by the Department of Public Safety
  • The company who installed the system must notify the fire department in the jurisdiction where installed
  • A field inspection shall be made before it is put into service
  • it shall not be operated below prescribed pressuers

8: How many groups of refrigerants are there?

  • 1
  • 5
  • 7
  • 3

9: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.

  • 100
  • 350
  • 550
  • 50

10: Ammonia (NH3) is a group III refrigerant

  • True
  • False

11: What is an egress?

  • An escape route
  • A valve put on the low side of the system to prevent frosting
  • A code violation
  • An entrance or exit

12: What refrigerant is an inorganic compound?

  • R-22
  • R-132A
  • Ammonia
  • R-410A

13: The discharge relief valve is located (9.4.6)

  • between the compressor and the stop valve
  • between the compressor and oil separator
  • on top of the condensor
  • between the compressor and reciever

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

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

15: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of

  • the ASME Boiler and Pressure Vessel Code
  • Section 11.3.1.5 ASHRAE 15 Standard
  • the ANSI Standard 10.7.2
  • both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5

16: Which of the following is an inorganic refrigerant?

  • R-22
  • Ammonia
  • Chlorofluorocarbons
  • All of the above

17: Ammonia belongs to Group

  • A-1
  • B-1
  • B-2
  • A-2

18: How many refrigerant classifications are there for flammability?

  • 3
  • 7
  • 1
  • 2

19: R-123 belongs to Group

  • B-3
  • A-3
  • B-2
  • B-1

20: R-22 is classified as a ____ refrigerant on the safety matrix.

  • A-1
  • B-1
  • B-2
  • A-2

21: A pressure relief should be located at least _______ from windows and doors.

  • 25'
  • 30'
  • 15'
  • 20'

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

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

23: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a

  • mercantile occupancy
  • business occupancy
  • commercial occupancy
  • public assembly occupancy.

24: Name three things that must be done when changing refrigeration lubricant?

  • Nothing must be done
  • You can't change lubricants.
  • Place sign, check for leaks, insulate
  • Make sure it's compatible, notify owner, notify AHJ

25: NH3 is

  • ammonia
  • lithium bromide
  • R-508A
  • R-718