ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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

2: 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

3: Which refrigerant replaced R-12?

  • R-134A
  • R-407A
  • R-410A
  • R-22

4: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.

  • True
  • False

5: A movie theater would be considered a

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

6: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.

  • True
  • False

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

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

8: Liquid level gauges must be provided with what?

  • A red line
  • A relief valve
  • A low level mark
  • Automatic shut-offs

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

  • 66
  • 22
  • 50
  • 25

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

  • black iron
  • magnesium
  • stainless steel
  • copper

11: Can ammonia be used on domestic system?

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

12: A restaurant is classified as a

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

13: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.

  • the atmosphere
  • a de-pressurized recovery tank with a silver top and yellow bottom
  • a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
  • All of the above

14: Machinery rooms must be vented to ______?

  • neutralizing tank
  • basement
  • outdoors
  • unoccupied spaces

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

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

16: How many refrigerant classifications are there for toxicity?

  • 2
  • 3
  • 1
  • 5

17: What is R-22?

  • Chlorodifluoromethane
  • Chlorofluoromethane
  • HFC
  • CCFCM

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

  • 15
  • 20
  • 5
  • 1

19: What is an example of institutional occupancy?

  • Hospital
  • Shopping mall
  • Football stadium
  • Dorms

20: Large mercantile occupancy is

  • a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.

21: Class 3 refrigerants are

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

22: What must be done to all doors and access points in duct work going through a mechanical room?

  • Must be hindged
  • Must be screwed shut
  • Must be sealed and gasketed
  • All of the above

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

  • PVC
  • Aluminum
  • Copper
  • Stainless Steel

24: R-717 is

  • ammonia
  • trichloromethane
  • water
  • carbon dioxide

25: Large vessels containing refrigerant ______________________ from using two or more pressure-relief devices in parallel to obtain the required capacity.

  • containing R-11, R-123 & R-717 exclusively shall not be prohibited
  • of Group B2 refrigerant shall be prohibited
  • shall not be prohibited
  • shall be prohibited