ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Halogenated refrigerants cannot be used with what material?

  • Copper
  • Magnesium alloy
  • Aluminum
  • Stainless steel

2: Halogen refrigerants are corrosive to which type of metal?

  • magnesium
  • black iron
  • copper
  • stainless steel

3: The Board of Boilers adopts by reference

  • MSCA Code
  • the MACS Pressure Vessel Code of Massachusetts
  • the 1997 ANSI/ASHRAE Safety Code
  • Montreal Protocol Safety Code

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

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

5: 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

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

7: Group A2 refrigerants have a ______ toxicity rating than Group B1 refrigerants.

  • lower
  • higher
  • there is no Group B1 refrigerants
  • the same

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

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

9: Most CFC's are

  • inert but toxic
  • inert
  • flammable
  • toxic

10: What is not a requirement of a Class T machine room?

  • Automatic ventilation
  • Self-closing doors
  • Tight fitting doors
  • Fire hose connected to the building fire protection system.

11: The gauge thickness required on a CO2 tank construction is

  • 1/16"
  • 1/8"
  • 3/32"
  • 5/16"

12: What would be the classification for Stop & Shop grocery store?

  • Large mercantile
  • Industrial
  • Place of assembly
  • Instituional

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

  • True
  • False

14: When can recovered refrigerants be reused?

  • They can't
  • Only when used in original owner's equipment
  • Only if used in 30 days of recovery
  • None of the above

15: A restaurant is classified as a

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

16: Class T machine room

  • has no flame producing apparatus permanently installed
  • shall include closets used for setting equipment
  • shall have remote controls to stop the action of the refrigerant compressor
  • shall have refrigerant leak detecting systems installed inside and outside the room

17: Direct systems using Group II refrigerants

  • shall be allowed to be used for human comfort.
  • shall be installed in Class T machinery rooms
  • shall not be used for air condition for human comfort
  • shall be installed per instruction of the AHJ

18: Pressure vessels having design pressures of 15 psig or less shall have the strength to withstand at least ______times the design pressure.

  • 5.5
  • 2.0
  • 2.5
  • 3.0

19: Doors communicating with outside from a mechanical room must be?

  • Self-closing, aligned, fire door
  • Steel, approved, weather-stripped
  • Self-closing, approved, fire door
  • Self-closing, wooden, fire door

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

  • relief valve
  • bleed valve
  • service valve
  • condenser

21: Machinery rooms must be vented to ______?

  • outdoors
  • neutralizing tank
  • unoccupied spaces
  • basement

22: A machine room with a refrigerant system using ammonia shall

  • be provided with a continuously operated ventilation system
  • be considered a non-hazardous location in accordance with National Electrical code
  • have no flame producing apparatus permanently installed and operated
  • All of the above

23: What refrigerant doesn't have to be classified?

  • R-134A
  • R-717
  • R-718
  • R-422A

24: What kind of material can't be used on the outlet of a relief valve?

  • PVC
  • Aluminum
  • Stainless Steel
  • Copper

25: R-123 belongs to Group

  • B-1
  • B-3
  • A-3
  • B-2