ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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

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

  • mercantile
  • commercial
  • business
  • public assembly

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

  • 24
  • 15
  • 18
  • 10

4: 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

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

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

6: R-22 falls under which safety classification?

  • A-2
  • A-1
  • B-1
  • B-2

7: Class A refrigerants are considered

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

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

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

9: What type of relief valve is used on a CO2 system?

  • gate valve
  • glove disc
  • rupture disc
  • fusible plug

10: What is a Category "M" fluid?

  • Any fluid that exceeds 150 psig and has design temperatures over 366F
  • A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and the designed temperature is between -20F to 366F
  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily content
  • A typical refrigerant used on newer air conditioning and heat pump systems

11: 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

12: 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

13: 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

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

14: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • UM or UL
  • UL and UR
  • UV or UR
  • UL and UM

15: What section of ASHRAE-15 governs pressure vessels?

  • Section 9 ASHRAE-15 ASME VIII unfired
  • Section 6 ASHRAE-34 ASME VIII unfired
  • Section 7 ASHRAE-15 ASME VIII fired
  • OSHA

16: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?

  • R-22
  • R-113
  • R-11
  • R-12

17: What refrigerant doesn't have to be classifted?

  • R-134a
  • R-717
  • R-711
  • R-718

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 ammonia
  • Flush with R-718

19: A hotel is considered a _______ occupancy.

  • residential
  • commercial
  • institutional
  • mercantile

20: A pressure vessel having an inside diameter of 6” or less shall be sufficient to withstand ____times the pressure of the saturation temperature of the refrigerant or ____times the critical pressure of the refrigerant, whichever is less.

  • 6.6, 6.6
  • 2.5, 3.0
  • 2.5, 2.5
  • 3.0, 3.5

21: How much refrigerant can be stored in a mechanical room outside of the system?

  • 150
  • 100
  • 330
  • 200

22: What type of pressure relief device is used on a CO2 system?

  • Glove valve
  • Fusible plug
  • Gate valve
  • Rupture disk

23: How many flammability classifications are refrigerants in?

  • 3
  • 5
  • 7
  • 2

24: Doors communicating with outside from a mechanical room must be?

  • Self-closing, wooden, fire door
  • Steel, approved, weather-stripped
  • Self-closing, aligned, fire door
  • Self-closing, approved, fire door

25: When is the only time you can leave a service container attached to a system?

  • Leaking system
  • Recovery
  • Charging
  • Both b and c