ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

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

2: What section governs pressure vessels?

  • Section ASHREA 34
  • OSHA
  • Section 8 ASHREA 15 ASME unfired
  • Section 1 ASHREA 15 ASME fired

3: Class 3 refrigerants are

  • toxic
  • highly flammable
  • non-toxic
  • non-flammable

4: A hotel is considered a _______ occupancy.

  • commercial
  • residential
  • institutional
  • mercantile

5: Setting a pressure relief device shall not exceed ___ of the design pressure

  • 100%
  • 75%
  • 80%
  • 90%

6: Most CFC's are

  • flammable
  • inert
  • inert but toxic
  • toxic

7: When systems are protected by a high pressure relief device, the compressor's pressure limiting device shall be set at or below ____ % of the operating pressure of the high side relief device.

  • 90
  • 80
  • 100
  • 110

8: Can ammonia be used on domestic system?

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

9: Defined process piping by code CMR (528)

  • Any piping that conveys a solid, liquid or gas that is not part of the plumbing or fire protection system
  • Any piping in an industrial space
  • Any piping in an industrial or commercial space
  • All of the above

10: A class A3 refrigerant is considered

  • toxic and non-flammable
  • non-toxic but highly flammable
  • toxic and somewhat flammable
  • non-toxic and non-flammable

11: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.

  • high pressure
  • critical pressure
  • design pressure
  • low pressure

12: 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

13: When an inspection is needed, how often must it be done?

  • every 18 months
  • annually
  • every 24 months
  • every 36 months

14: Halogen refrigerants are corrosive to which type of metal?

  • stainless steel
  • black iron
  • magnesium
  • copper

15: Can you use Ammonia in industrial applications?

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

16: System design pressures must take into consideration, not only, pressures found during normal operation but also what?

  • When it's cold out
  • When there is a malfunction on the high side
  • When its warm out
  • All of the above

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

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

18: A person holding a license as a refrigeration technician may connect or disconnect for the purpose of installation, repair, or replacement, any electrical device or control to be a part of a refrigeration or air conditioning system, from the

  • breaker panel in
  • 24 volt secondary side of the Class 2 transformer to the thermostat
  • first disconnect in
  • load-side of the contactor in

19: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and

  • gas masks must be worn
  • no flames shall be permitted
  • the owner shall be informed
  • explosion precautions must be taken

20: Class A refrigerants are considered

  • non-flammable
  • flammable
  • toxic
  • non-toxic

21: NH3 is

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

22: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.

  • 48
  • 36
  • 24
  • 18

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

  • B-2
  • A-2
  • B-1
  • A-1

24: Whoever owns/uses a refrigeration or air conditioning system covered by this code

  • must notify the Department of Public Safety prior to starting the system
  • shall be licensed by the Commonwealth of Massachusetts according to CMR 522
  • shall make application for inspections to the Chief of Inspectors
  • None of the above

25: A High-Probablity system

  • is such that a leak of refrigerant from failed connections will enter the unoccupied space
  • is a system highly likely to leak from a failed connection or component of such system
  • is such that a leak of refrigerant from failed connections will enter the occupied space
  • is such that any leak will cause injury or death to anyone within a 100 square foot area