ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?

  • R-11
  • R-22
  • R-12
  • R-113

2: All serviceable components of a refrigeration system shall be provided with

  • name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
  • service manuals
  • manufactures instructions on start-up procedures
  • safe access

3: Can you use Ammonia in industrial applications?

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

4: Ammonia (NH3) is a group III refrigerant

  • True
  • False

5: How many gallons of water per pound of ammonia do you need?

  • 20
  • 5
  • 15
  • 1

6: How many different groups of refrigerants are there?

  • 11
  • 7
  • 15
  • 3

7: 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

8: 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

9: Class 3 refrigerants are

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

10: 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

11: Fusible plugs must have what marked on them?

  • Melting temperature in F
  • Melting temperature in C
  • Opening pressure
  • All of the above

12: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?

  • 100,000
  • 1,000
  • 100
  • 10,000

13: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered

  • institutional occupancy
  • commercial occupancy
  • mixed occupancy
  • public assembly occupancy

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

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

15: Large mercantile occupancy is

  • a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.

16: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?

  • A group sensing
  • phosgene gas sening
  • refrigerant sensing
  • CO Sensing

17: Which refrigerant(s) is an HFC?

  • R-22
  • R-410A
  • R-502
  • All of the above

18: Can a R22 line set be reused for a 410A system and if it can be reused, what must be done to it?

  • Flush with RX-11
  • Flush with R-718
  • Flush with R-11
  • Flush with ammonia

19: How are refrigerant blends classified?

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

20: A relief valve shall be located at least ___ above grade.

  • 15'
  • 36'
  • 25'
  • 10'

21: Pressure vessels with an internal volume of 10 cubic feet or more

  • shall use fusible plugs
  • shall use pressure relief devices or fusible plugs
  • shall use rupture discs or duel pressure relief valves
  • shall use pressure relief devices

22: pressure relief valves must discharge to the atmosphere at a location not less than 15 feet from ground level and ____ feet from any window, ventilation opening, or exits of buildings.

  • 15
  • 20
  • 10
  • 25

23: Halo-carbon refrigerants cannot be used with what material?

  • Stainless Steel
  • Aluminum
  • Copper
  • Magnesium alloy

24: Which of the following is an inorganic refrigerant?

  • R-22
  • Ammonia
  • Chlorofluorocarbons
  • All of the above

25: Class T machine room

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