ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Ammonia belongs to Group

  • B-2
  • B-1
  • A-2
  • A-1

2: Joints in piping for refrigeration containing parts must withstand temperatures of ___?

  • 1000F
  • 600F
  • 700F
  • 800F

3: Pipe identification labels are required when the system contains more than

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

4: Which refrigerant class listed below is the most flammable?

  • A-1
  • A-3
  • C-3
  • B-2

5: What is not a requirement of a class T machine room?

  • fire hose connection to the building fire protection system
  • tight fitting doors
  • self-closing doors
  • automatic ventilation

6: A restaurant is classified as a

  • public assembly occupancy
  • large mercantile occupancy
  • mixed occupancy
  • commercial occupancy

7: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

8: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.

  • 550
  • 100
  • 350
  • 50

9: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the

  • boiler
  • evaporator
  • outside the machinery room
  • compressor

10: What refrigerant doesn't have to be classifted?

  • R-134a
  • R-718
  • R-711
  • R-717

11: When must refrigeration system covered by the code be inspected?

  • Not required
  • Annually
  • Annually and when installed
  • Upon installation

12: Class 3 refrigerants are

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

13: Systems containing more than 110 pounds must have stop valves located at the

  • compressor suction inlet
  • compressor discharge outlet
  • receiver inlet and outlet
  • All of the above

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

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

15: Refrigeration piping before being buried shall be

  • leak tested
  • encased in pipe duct
  • pressure tested
  • All of the above

16: What must be done to refrigerant pipes before being buried ?(8.10.4)

  • Certified
  • Insulated and installed in a pipe duct (Encased)
  • Leak checked
  • Classifed

17: R-22 is considered a(n)

  • HFC
  • CFC
  • HCFC
  • HCFCH

18: Refrigerant restricted in 2004 but used for transition for decades:

  • R-123
  • R-22
  • R-134A
  • R-11

19: _____ and its alloys are suitable for use with ammonia systems.

  • Zinc
  • Copper
  • Magnesium
  • Aluminum

20: Class A refrigerants are considered

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

21: Name an HCFC refrigerant(s):

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

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

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

23: What is R-22?

  • Chlorofluoromethane
  • HFC
  • Chlorodifluoromethane
  • CCFCM

24: 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

25: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.

  • True
  • False