ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Industrial occupancy is

  • a premise or that portion of a premise that is not open to the public, where access by authorized persons is controlled, and that is used to manufacture, process, or store goods, such as chemicals, food, ice, meat, or petroleum.
  • is a premise or that portion of a premise where large number of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • Both a and b are correct

2: Name a CFC refrigerant(s):

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

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

  • 100%
  • 75%
  • 90%
  • 80%

4: R-22 is considered a(n)

  • HCFCH
  • HCFC
  • CFC
  • HFC

5: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)

  • Pressure gauge
  • Temperature gauge
  • Sight glass gauge
  • All of the above

6: What is R-22?

  • Chlorodifluoromethane
  • CCFCM
  • Chlorofluoromethane
  • HFC

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

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

8: What type of relief valve is used on a CO2 system?

  • rupture disc
  • glove disc
  • gate valve
  • fusible plug

9: Can you use Ammonia in industrial applications?

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

10: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

11: What is a Category "D" fluid?

  • A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and design temperature is between -20F to 366F
  • Any fluid that exceeds 150 psig and has design temperature of over 366F
  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily contact
  • A typical refrigerant used on newer air conditioning and heat pump ssytems

12: Which occupancy can ammonia be used in?

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

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

  • B-2
  • A-1
  • C-3
  • A-3

14: Can ammonia be used on domestic system?

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

15: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested

  • quarterly
  • bi-annually
  • annually
  • regularly

16: A person holding a license as a refrigeration technician may connect or disconnect for the purpose of installation, repair, or replacement, any electrical device or control to be a part of a refrigeration or air conditioning system, from the

  • load-side of the contactor in
  • first disconnect in
  • breaker panel in
  • 24 volt secondary side of the Class 2 transformer to the thermostat

17: Refrigerants shall be classified by

  • requirements for commercial, industrial, and residential occupancies
  • maximum permissible quantities of each group
  • toxicity and flammability
  • color codes

18: A class B1 refrigerant is considered

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

19: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?

  • When there is a space 6' or more above it
  • When its white
  • When there are sprinklers above
  • When it's used as part of a supply or return air system

20: A 3-cubic foot receiver must have what type of relief valve?

  • fusible plug
  • relief valve
  • rupture device
  • none of the above

21: Each machinery room shall contain

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

22: What type refrigerant is NOT ozone depleting?

  • Halon
  • HFC
  • HCFC
  • CFC

23: Stop valves shall not be permitted between the system and the

  • bleed valve
  • condenser
  • service valve
  • relief valve

24: R-123 belongs to Group

  • B-3
  • B-2
  • A-3
  • B-1

25: Pressure limiting devices are not required for systems containing less then ________ refrigerants.

  • 44 lbs
  • 13.9 lbs
  • 22 lbs
  • 6.6 lbs