ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • aluminum
  • zinc
  • magnesium
  • all of the above

2: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?

  • Muffler
  • Stop valve
  • Foot valve
  • Moisture indicator

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

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

4: What was the main reason for enacting the no venting rule of July 1, 1992?

  • Ozone depletion
  • Green house effect
  • Global warming potential
  • All of the above

5: Which refrigerant replaced R-12?

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

6: B3 refrigerants are considered

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

7: Setting a pressure relief device shall not exceed ___ of the design pressure

  • 75%
  • 80%
  • 90%
  • 100%

8: Halogenated refrigerants cannot be used with what material?

  • Magnesium alloy
  • Copper
  • Aluminum
  • Stainless steel

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

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

10: R-123 belongs to Group

  • B-3
  • B-2
  • B-1
  • A-3

11: No open flames are allowed in the machinery room unless?

  • Only when combustion air is provided from outside of the machinery room
  • Approved by the installing contractor
  • Never can be allowed
  • Approved by the authorized person

12: _____ alloys shall not be used in contact with an halogenated refrigerants.

  • Magnesium
  • Nickel
  • Zinc
  • Copper

13: NH3 is

  • lithium bromide
  • R-718
  • ammonia
  • R-508A

14: Refrigeration piping before being buried shall be

  • leak tested
  • encased in pipe duct
  • pressure tested
  • All of the above

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

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

16: Joints in piping for refrigeration containing parts must withstand temperatures of ___?

  • 1000F
  • 600F
  • 800F
  • 700F

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

  • Large mercantile
  • Industrial
  • Place of assembly
  • Instituional

18: What refrigerant is an inorganic compound?

  • Ammonia
  • R-132A
  • R-22
  • R-410A

19: 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

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

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

21: 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

22: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)

  • Pressure gauge
  • Temperature gauge
  • Sight glass gauge
  • All of the above

23: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of

  • the ASME Boiler and Pressure Vessel Code
  • Section 11.3.1.5 ASHRAE 15 Standard
  • the ANSI Standard 10.7.2
  • both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5

24: When an inspection is needed, how often must it be done?

  • every 18 months
  • every 24 months
  • annually
  • every 36 months

25: Dual-pressure relief devices should be installed on

  • vessels of 3 cubic feet or more
  • vessels of 3 cubic feet or less
  • vessels of 10 cubic feet or less
  • vessels of 10 cubic feet or more