ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Group A2 refrigerants have a ______ toxicity rating than Group B1 refrigerants.

  • the same
  • there is no Group B1 refrigerants
  • lower
  • higher

2: A class A3 refrigerant is considered

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

3: A High-Probablity system

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

4: What refrigerant is an inorganic compound?

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

5: 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

6: How much clearance do you need around the perimeter of electrical panels?

  • 36"
  • 12"
  • 24"
  • 18"

7: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

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

  • 66
  • 25
  • 50
  • 22

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

  • Place of assembly
  • Large mercantile
  • Industrial
  • Instituional

10: 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.

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

11: What type of pressure relief device is used on a CO2 system?

  • Fusible plug
  • Gate valve
  • Glove valve
  • Rupture disk

12: Can ammonia be used on domestic system?

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

13: Direct systems using Group II refrigerants

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

14: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.

  • 9.00'
  • 8'4"
  • 7.25'
  • 7.00'

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

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

16: What does safe access mean?

  • Well-lit exit signs
  • A clear unobstructed path to the equipment and controls
  • Locked doors
  • OSHA approved

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

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

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

  • Copper
  • Zinc
  • Nickel
  • Magnesium

19: What is the minimum size of the discharge pipe?

  • Same size as the outlet of the relief valve
  • One pipe size larger that the inlet of the relief valve
  • Depends on size of manifold
  • All of the above

20: A hotel is considered a _______ occupancy.

  • institutional
  • mercantile
  • residential
  • commercial

21: How many flammability classifications are refrigerants in?

  • 5
  • 2
  • 3
  • 7

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

  • 33
  • 50
  • 18
  • 22

23: Name an HCFC refrigerant(s):

  • R-22
  • R-123
  • R-11
  • both a & b

24: R-11 belongs to Group

  • A-2
  • B-3
  • B-1
  • A-1

25: A pressure relief should be located at least _______ from windows and doors.

  • 30'
  • 25'
  • 15'
  • 20'