ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Where are the three places that the discharge from an ammonia relief valve be piped?

  • To chemical neutralizing tank only
  • Underground, into drain, into mechanical room
  • Atmosphere, Tank containing water, where the AHJ indicates.
  • None of the above.

2: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.

  • True
  • False

3: Low temperature systems should have what?

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

4: The Department that certifies the transportation of refrigerant is the

  • EPA
  • DOT
  • EPO
  • RSES

5: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant

  • does not require a pressure-limiting device
  • shall have a pressure limiting device and a pressure relief valve installed
  • shall have a pressure limiting device installed on the high side of the system
  • shall be inspected by the Boiler of Inspectors bi-annually

6: 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

7: 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

8: How many flammability classifications are refrigerants in?

  • 2
  • 7
  • 5
  • 3

9: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.

  • 75
  • 55
  • 15
  • 50

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

  • 66
  • 50
  • 25
  • 22

11: 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

12: System design pressures must take into consideration, not only, pressures found during normal operation but also what?

  • When it's cold out
  • When there is a malfunction on the high side
  • When its warm out
  • All of the above

13: Refrigerants shall be classified by

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

14: When systems are protected by a high pressure relief device, the compressor's pressure limiting device shall be set at or below ____ % of the operating pressure of the high side relief device.

  • 80
  • 110
  • 100
  • 90

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

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

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

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

17: A High-Probablity system

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

18: Pressure vessels with an internal volume of 3 cubic feet or less

  • do not need pressure relief protection
  • shall use fusible plugs
  • shall use pressure relief devices or fusible plugs
  • shall use pressure relief devices

19: What is R-22?

  • CCFCM
  • HFC
  • Chlorofluoromethane
  • Chlorodifluoromethane

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

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

21: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into

  • the low-pressure side of the system
  • the high side of the system
  • the liquid receiver
  • both a and c are correct

22: A declaration test is needed when the system contains more than

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

23: What do you need to do when you install a new system?

  • Have it inspected
  • Add refrigerant
  • Insulate the suction line before you take a superheat reading
  • Document the superheat and subcooling reading

24: All electrical work done on refrigeration systems must comply with

  • Department of Energy
  • ASHREA-15 Section 9.2.1
  • NEC and Massachusetts Modifications
  • OSHA

25: The color code of a tank of ammonia is

  • silver
  • white
  • lavender
  • light green