ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Single compound Refrigerants are classified by what two criteria?

  • Flammability and temperature range
  • Flammability and toxicity
  • Temperature range and hazardousness
  • Weight and color

2: A restaurant is classified as a

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

3: A professional or office building would be considered what type of occupancy?

  • business
  • public assembly
  • mercantile
  • commercial

4: Which occupancy can ammonia be used in?

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

5: Refrigerants shall be classified by

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

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

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

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

  • RSES
  • DOT
  • EPA
  • EPO

8: The discharge relief valve is located (9.4.6)

  • between the compressor and the stop valve
  • between the compressor and reciever
  • on top of the condensor
  • between the compressor and oil separator

9: Name three things that must be done when changing refrigeration lubricant?

  • Place sign, check for leaks, insulate
  • Make sure it's compatible, notify owner, notify AHJ
  • Nothing must be done
  • You can't change lubricants.

10: Ammonia (NH3) is a group III refrigerant

  • True
  • False

11: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code

  • over pressure protection and a rupture disc
  • over pressure protection as well as a temperature protection device
  • over pressure protection
  • Pressure vessels need no type of protection as long as it is hydrostatically tested every three months

12: Class 3 refrigerants are

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

13: Can you use Ammonia in industrial applications?

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

14: Evaporators within 18" of a heating coil must be equipped with a

  • pressure relief device
  • zone valve
  • high limit control
  • low limit control

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

  • Aluminum
  • Magnesium
  • Zinc
  • Copper

16: 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

17: _____ alloys shall not be used in contact with an halogenated refrigerants.

  • Magnesium
  • Zinc
  • Copper
  • Nickel

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

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

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

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

20: What is the minimum size of the discharge pipe?

  • Same size as the outlet of the relief valve
  • One pipe size larger that the inlet of the relief valve
  • Depends on size of manifold
  • All of the above

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

  • Copper
  • Aluminum
  • PVC
  • Stainless Steel

22: Ammonia can come in contact with _______ ?

  • Aluminum
  • Copper
  • Brass
  • Copper tubing

23: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?

  • fusible plug
  • relief valve
  • rupture disc
  • all of the above

24: How are refrigerant blends classified?

  • Based on best case Fractionation
  • Based on the oil used
  • Blends don't have to be classified
  • Based on worst case fractionation

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

  • 50
  • 25
  • 66
  • 22