ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

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

2: All machine rooms must be outfitted with a detector that _______?

  • activates an audible alarm
  • activates a visual alarm
  • starts the ventilation system
  • All of the above

3: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.

  • True
  • False

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

  • 15
  • 18
  • 24
  • 10

5: Where a refrigeration or air conditioning system is installed,

  • it shall not be operated below prescribed pressuers
  • A field inspection shall be made before it is put into service
  • The company who installed the system must notify the fire department in the jurisdiction where installed
  • the form or certificate shall be authorized by the Department of Public Safety

6: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?

  • A group sensing
  • refrigerant sensing
  • phosgene gas sening
  • CO Sensing

7: How many refrigerant classifications are there for toxicity?

  • 2
  • 3
  • 5
  • 1

8: Pressure vessels nameplate markings must be compliant with the

  • ASHRAE 34 Standards
  • CMR-588 & CMR-528
  • ASME Boiler and Pressure Vessel Code
  • All of the Above

9: Pressure vessels of 10 cubic feet or more gross volume shall use

  • at least one rupture member
  • a dual pressure-relief valve if charging into the atmosphere
  • at least three means of discharge and/or rupture discs
  • both a and b are correct

10: How are refrigerant blends classified?

  • Based on best case Fractionation
  • Based on worst case fractionation
  • Blends don't have to be classified
  • Based on the oil used

11: R-22 falls under which safety classification?

  • A-1
  • B-1
  • A-2
  • B-2

12: Pressure vessels having an inside diameter of 6” or less shall be protected by

  • Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
  • either a fusible plug or a pressure relief device
  • a fusible plug
  • a pressure relief device

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

  • 75%
  • 80%
  • 90%
  • 100%

14: What pipe can not be used for refrigeration?

  • K
  • M
  • L
  • N

15: 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

16: Direct systems using Group II refrigerants

  • shall be installed per instruction of the AHJ
  • shall be installed in Class T machinery rooms
  • shall be allowed to be used for human comfort.
  • shall not be used for air condition for human comfort

17: What happens after your initial inspection of a pressure vessel?

  • Inspector leaves a metal tag with a certification listed on it
  • Notify the AHJ to let them know that the system been inspected
  • Notify the Fire Marshal that the system has been inspected and approved
  • There is a temporary shut-down until a final inspection can be performed.

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

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

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

  • mercantile
  • business
  • public assembly
  • commercial

20: 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

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

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

22: The color code of a tank of ammonia is

  • white
  • light green
  • silver
  • lavender

23: Joints in refrigeration piping must be _____ before being covered?

  • Leak tested
  • Pressurized
  • Inspected
  • Insulated

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

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

25: Fusible plugs shall not be used with pressure vessels of

  • 15 square feet or less
  • 15 cubic feet or more
  • 3 cubic feet or more
  • 3 cubic feet or less