ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: How far from the ground does a relief valve need to be?

  • Not more than 3' above grade
  • At least 25' above grade
  • At least 15' above grade
  • At least 20' above grade

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

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

3: 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

4: All electrical work done on refrigeration systems must comply with

  • Department of Energy
  • ASHREA-15 Section 9.2.1
  • OSHA
  • NEC and Massachusetts Modifications

5: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

6: What is an egress?

  • An escape route
  • A code violation
  • A valve put on the low side of the system to prevent frosting
  • An entrance or exit

7: How many groups of refrigerants are there?

  • 7
  • 1
  • 5
  • 3

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

  • 200
  • 150
  • 100
  • 330

9: Can ammonia be used on domestic system?

  • yes
  • no, unless there is proper ventilation system installed
  • no
  • yes, for systems under 10 tons

10: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.

  • 3
  • 5
  • 1
  • 2

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

  • 75%
  • 80%
  • 90%
  • 100%

12: 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 liquid side of the system
  • high side of the system
  • the vapor side of the system

13: 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

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

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

15: 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

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

  • aluminum
  • zinc
  • magnesium
  • all of the above

17: 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

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

  • 10
  • 18
  • 15
  • 24

19: What would be the classification of a prison?

  • Institutional
  • Place of assembly
  • Large mercantile
  • Industrial

20: 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.

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

21: R-717 is

  • carbon dioxide
  • water
  • trichloromethane
  • ammonia

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

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

23: What refrigerant were phased out in 2004?

  • R-134a
  • R-12
  • R-22
  • R-11

24: Halogen refrigerants are corrosive to which type of metal?

  • copper
  • stainless steel
  • black iron
  • magnesium

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

  • 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.
  • Inspector leaves a metal tag with a certification listed on it