ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What is the minimum height refrigeration piping should be placed against walls?

  • 72"
  • Ceiling height
  • 7.25'
  • 6'

2: Low temperature systems should have what?

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

3: Can you use Ammonia in industrial applications?

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

4: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a

  • mercantile occupancy
  • business occupancy
  • commercial occupancy
  • public assembly occupancy.

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

  • C3
  • A3
  • B2
  • A2

6: The main purpose of a refrigerant detector in a machinery room is to

  • inform there is a refrigerant leak int he system
  • detect toxins in the air caused by a refrigerant leak
  • to set off an alarm when there is refrigerant present inside the room
  • all of the above

7: R-12. R-22, and R-40 are considered Group I refrigerants.

  • True
  • False

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

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

9: How far from the window does a relief valve need to be according to ASHRAE-15?

  • At least 40'
  • At least 30'
  • There is no minimum for relief valve and windows.
  • At least 20'

10: All welding done on any refrigeration system or piping covered by 522 CMR 9.00 shall be performed by a according to Section IX of the ASME code

  • competent welder
  • licensed technician
  • licensed welder
  • welder qualified

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

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

12: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of

  • the aggregate of the high side and low side
  • the high side
  • the low side
  • 2.5 times the design pressure

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

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

14: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

15: 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

16: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.

  • 250
  • 100
  • 400
  • 350

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

  • atmosphere, tank containing water, where the A.H.J. indicates
  • underground, into drain, into mechanical room
  • to chemical neutralizing tank only
  • none of the above

18: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.

  • the atmosphere
  • a de-pressurized recovery tank with a silver top and yellow bottom
  • a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
  • All of the above

19: A plug containing an alloy that will melt at a specific temperature to relief pressure is a

  • relief plug
  • fusible plug
  • fusion plug
  • rupture plug

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

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

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

  • 660 lbs
  • 330 lbs
  • 500 lbs
  • 55 lbs

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

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

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

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

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

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

25: A High-Probablity system

  • 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 unoccupied space
  • 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