ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • Copper
  • PVC
  • Stainless Steel
  • Aluminum

2: What is an example of institutional occupancy?

  • Shopping mall
  • Hospital
  • Football stadium
  • Dorms

3: A positive displacement compressor is

  • 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
  • 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 pressure of the compression chamber

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

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

5: How many refrigerant classifications are there for flammability?

  • 2
  • 3
  • 1
  • 7

6: Pressure vessels with an internal volume of 3 cubic feet or more

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

7: Refrigerant restricted in 2004 but used for transition for decades:

  • R-11
  • R-123
  • R-134A
  • R-22

8: Who authorizes changes to the safety codes?

  • Contractor who last serviced the system.
  • Person in charge of the facility
  • Board of Boilers
  • Person who pulled the permit

9: How many different groups of refrigerants are there?

  • 7
  • 15
  • 3
  • 11

10: Halogenated refrigerants cannot be used with what material?

  • Magnesium alloy
  • Aluminum
  • Stainless steel
  • Copper

11: What is the minimum size of the discharge pipe?

  • Same size as the outlet of the relief valve
  • One pipe size larger that the inlet of the relief valve
  • Depends on size of manifold
  • All of the above

12: The color code of a tank of ammonia is

  • white
  • lavender
  • silver
  • light green

13: Pressure vessels with an internal volume of 10 cubic feet or more

  • shall use rupture discs or duel pressure relief valves
  • shall use pressure relief devices
  • shall use pressure relief devices or fusible plugs
  • shall use fusible plugs

14: What is the refrigerant dichlorodifluoromethane?

  • R-123
  • R-134A
  • R-22
  • R-12

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

  • 50
  • 10
  • 100
  • 1

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

  • 66
  • 50
  • 22
  • 25

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

  • 24
  • 18
  • 10
  • 15

18: What type refrigerant is NOT ozone depleting?

  • CFC
  • HCFC
  • HFC
  • Halon

19: What would be the classification of a church?

  • Place of assembly
  • Large mercantile
  • Industrial
  • Institutional

20: Pressure limiting devices are not required for systems containing less then ________ refrigerants.

  • 22 lbs
  • 13.9 lbs
  • 6.6 lbs
  • 44 lbs

21: What is not a requirement of a class T machine room?

  • automatic ventilation
  • self-closing doors
  • tight fitting doors
  • fire hose connection to the building fire protection system

22: R-11 belongs to Group

  • B-3
  • A-1
  • B-1
  • A-2

23: What pipe can not be used for refrigeration?

  • M
  • K
  • N
  • L

24: Relief valves are rated in

  • gallons of water per hour
  • gallons of water per minute
  • pounds of air per hour
  • pounds of air per minute

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

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