ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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

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

  • 22
  • 50
  • 25
  • 66

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

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

4: Can you use Ammonia in industrial applications?

  • No, never
  • Yes, always
  • Yes, Under certain condidtions
  • When mixed with R-718

5: Large mercantile occupancy is

  • a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise

6: Doors communicating with outside from a mechanical room must be?

  • Self-closing, approved, fire door
  • Self-closing, wooden, fire door
  • Self-closing, aligned, fire door
  • Steel, approved, weather-stripped

7: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.

  • the return air ducted system
  • Machinery rooms need not be vented
  • the outdoors
  • the mechanical room housing the refrigeration system

8: R-22 is considered a(n)

  • HCFCH
  • HCFC
  • HFC
  • CFC

9: B3 refrigerants are considered

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

10: Halogenated refrigerants cannot be used with what material?

  • Copper
  • Aluminum
  • Stainless steel
  • Magnesium alloy

11: What refrigerant is an inorganic compound?

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

12: Name three things that must be done when changing refrigeration lubricant?

  • You can't change lubricants.
  • Nothing must be done
  • Place sign, check for leaks, insulate
  • Make sure it's compatible, notify owner, notify AHJ

13: R-11 belongs to Group

  • A-2
  • A-1
  • B-3
  • B-1

14: A High-Probability System

  • is a system highly likely to leak form a failed connection or component of such system
  • is such that a leak of refrigerant from a failed connection will enter an unoccupied space
  • is such that a leak of refrigerant from a failed connection will enter the occupied space
  • is such that any leak will cause injury or death to anyone within a 100 square foot area

15: 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
  • high side of the system
  • the liquid side of the system

16: Field Inspections of refrigeration and A/C systems in Massachusetts shall be made by

  • District Engineering Inspectors
  • Commissioned Inspectors
  • Master licensed Technician
  • both a or b

17: Single compound Refrigerants are classified by what two criteria?

  • Weight and color
  • Flammability and toxicity
  • Temperature range and hazardousness
  • Flammability and temperature range

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

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

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

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

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

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

21: What would be the classification of a church?

  • Industrial
  • Place of assembly
  • Large mercantile
  • Institutional

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

  • 330
  • 100
  • 150
  • 200

23: The discharge relief valve is located (9.4.6)

  • between the compressor and oil separator
  • between the compressor and the stop valve
  • between the compressor and reciever
  • on top of the condensor

24: 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

25: How many groups of refrigerants are there?

  • 3
  • 5
  • 1
  • 7