ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Ammonia is under what safety classification?

  • B1
  • B3
  • A3
  • B2

2: A 3-cubic foot receiver must have what type of relief valve?

  • fusible plug
  • relief valve
  • rupture device
  • none of the above

3: How many different groups of refrigerants are there?

  • 7
  • 15
  • 3
  • 11

4: 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

5: How many refrigerant classifications are there for flammability?

  • 7
  • 1
  • 2
  • 3

6: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?

  • 100
  • 1,000
  • 10,000
  • 100,000

7: What does safe access mean?

  • Well-lit exit signs
  • A clear unobstructed path to the equipment and controls
  • Locked doors
  • OSHA approved

8: What is an example of institutional occupancy?

  • Shopping mall
  • Dorms
  • Hospital
  • Football stadium

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

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

10: Ammonia can come in contact with _______ ?

  • Brass
  • Copper tubing
  • Copper
  • Aluminum

11: A declaration test is needed when the system contains more than

  • 55 lbs
  • 120 lbs
  • 65 lbs
  • 110 lbs

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

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

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

  • R-22
  • R-113
  • R-11
  • R-12

14: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code

  • Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
  • over pressure protection
  • over pressure protection as well as a temperature protection device
  • over pressure protection and a rupture disc

15: Halogenated refrigerants cannot be used with what material?

  • Aluminum
  • Magnesium alloy
  • Stainless steel
  • Copper

16: A positive displacement compressor is

  • a compressor in which the increase in pressure is attained by changing the internal pressure of the compression chamber
  • where the compressor's suction pressure and the compressor;s discharge pressure is more than 50 PSI
  • a compressor in which the increase in pressure is attained by changing the internal volume of the compression chamber
  • is a reciprocating type compressor with 2 or more pistons

17: What pipe can not be used for refrigeration?

  • N
  • K
  • L
  • M

18: 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.

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

19: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.

  • Lithium bromide
  • ammonia
  • CFC-11
  • HCFC-123

20: Pipe identification labels are required when the system contains more than

  • 110 lbs
  • 55 lbs
  • 120 lbs
  • 65 lbs

21: What would be the classification of a prison?

  • Institutional
  • Place of assembly
  • Large mercantile
  • Industrial

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

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

23: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into

  • the low-pressure side of the system
  • the high side of the system
  • the liquid receiver
  • both a and c are correct

24: What would be the classification of a church?

  • Large mercantile
  • Place of assembly
  • Institutional
  • Industrial

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

  • B-2
  • A-2
  • A-1
  • B-1