ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Whoever owns/uses a refrigeration or air conditioning system covered by this code

  • must notify the Department of Public Safety prior to starting the system
  • shall be licensed by the Commonwealth of Massachusetts according to CMR 522
  • shall make application for inspections to the Chief of Inspectors
  • None of the above

2: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within

  • 2 months
  • 1 week
  • 14 days
  • 30 days

3: A room having machinery but no flame producing apparatus permanently installed and operated is considered a

  • Class A machinery room
  • Class T machinery room
  • Class B machinery room
  • Class M machinery room

4: Name a CFC refrigerant(s):

  • R-11
  • R-12
  • R-123
  • both a & b

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

  • 20'
  • 25'
  • 15'
  • 30'

6: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?

  • 10,000
  • 100,000
  • 100
  • 1,000

7: A High-Probablity system

  • is such that a leak of refrigerant from failed connections will enter the unoccupied space
  • is such that a leak of refrigerant from failed connections will enter the occupied space
  • 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

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

  • 50
  • 25
  • 66
  • 22

9: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

10: 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

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

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

12: Each machinery room shall contain

  • high and low pressure controls
  • a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate
  • a refrigerant detector located in an area where the refrigerant from a leak will concentrate
  • smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements

13: Halogenated refrigerants cannot be used with what material?

  • Magnesium alloy
  • Copper
  • Stainless steel
  • Aluminum

14: Which refrigerant replaced R-12?

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

15: Class 3 refrigerants are

  • highly flammable
  • non-toxic
  • non-flammable
  • toxic

16: Low temperature systems should have what?

  • High pour point
  • Low pour point
  • High viscosity
  • None of the above

17: Can ammonia be used on domestic system?

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

18: A class A3 refrigerant is considered

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

19: What would be the classification of a prison?

  • Institutional
  • Industrial
  • Large mercantile
  • Place of assembly

20: What is the refrigerant chlorodifluoromethane?

  • R-134a
  • R-123
  • R-12
  • R-22

21: Which occupancy can ammonia be used in?

  • depends on the quantity of freon
  • redifential
  • commercial
  • industrial

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

  • 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
  • it shall not be operated below prescribed pressuers
  • the form or certificate shall be authorized by the Department of Public Safety

23: Fusible plugs must have what marked on them?

  • Melting temperature in F
  • Melting temperature in C
  • Opening pressure
  • All of the above

24: Which of the following are considered inorganic refrigerants?

  • R-717 and R-718
  • 410A and R-407C
  • R-500 and R-502
  • None of the above

25: Class A refrigerants are considered

  • flammable
  • non-flammable
  • toxic
  • non-toxic