ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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

2: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?

  • fusible plug
  • relief valve
  • rupture disc
  • all of the above

3: Halo-carbon refrigerants cannot be used with what material?

  • Magnesium alloy
  • Stainless Steel
  • Copper
  • Aluminum

4: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 33
  • 18
  • 50
  • 22

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

  • 200
  • 100
  • 330
  • 150

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

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

7: Fusible plugs must have what marked on them?

  • Melting temperature in F
  • Melting temperature in C
  • Opening pressure
  • All of the above

8: R-22 is considered a(n)

  • HCFC
  • HFC
  • CFC
  • HCFCH

9: A Category D fluid

  • is when the fluid handled is non flammable, nontoxic, and not damaging to human as defined in ANSI/ASME Process Piping.
  • is when the design pressure does not exceed 150 psi
  • a fluid for service piping in which the potential for personnel exposure is judged to cause harm and irreversible damage to those persons exposed to it
  • Both a and b are correct

10: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8

  • low side of the system
  • the vapor side of the system
  • the liquid side of the system
  • high side of the system

11: What would be the classification for Stop & Shop grocery store?

  • Industrial
  • Place of assembly
  • Instituional
  • Large mercantile

12: A class A3 refrigerant is considered

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

13: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.

  • 75
  • 55
  • 15
  • 50

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

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

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

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

16: What is R-22?

  • CCFCM
  • HFC
  • Chlorofluoromethane
  • Chlorodifluoromethane

17: A plug containing an alloy that will melt at a specific temperature to relief pressure is a

  • fusion plug
  • fusible plug
  • rupture plug
  • relief plug

18: Which refrigerant class listed below is the most flammable?

  • A3
  • A2
  • B2
  • C3

19: Liquid shall not occupy more than ____ of the volume when the temperature of the refrigerant is 90F.

  • 75%
  • 100%
  • 80%
  • 90%

20: Methyl Chloride is a halogenated refrigerant and should not come in contact with

  • aluminum
  • zinc
  • magnesium
  • all of the above

21: 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

22: B3 refrigerants are considered

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

23: Evaporators within 18" of a heating coil must be equipped with a

  • zone valve
  • low limit control
  • pressure relief device
  • high limit control

24: Liquid level gauges shall have _____________ with one exception being that of the liquid level gauge bull’s eye type.

  • color-coded glass to determine type of refrigerant
  • moisture indicators
  • automatic closing shut-off valves
  • All of the above

25: Trichlorofluoromethane is the name of what refrigerant?

  • R-502
  • R-12
  • R-11
  • R-113