ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: A class B2 refrigerant is considered

  • non-toxic and highly flammable
  • toxic and non-flammable
  • toxic and somewhat flammable
  • non-toxic and non-flammable

2: Setting a pressure relief device shall not exceed ___ of the design pressure

  • 75%
  • 90%
  • 100%
  • 80%

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

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

4: A movie theater would be considered a

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

5: 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

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

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

7: R-718 is rated unlimited for refrigeration quantity contained in a system. Why?

  • R-718 is not rated unlimited because it's a dangerous refrigerant
  • Because it's a non-flammable refrigerant
  • Because it's water
  • Because it's cheap

8: Which occupancy can ammonia be used in?

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

9: Ammonia is under what safety classification?

  • A3
  • B2
  • B3
  • B1

10: What would be the classification of a church?

  • Place of assembly
  • Institutional
  • Large mercantile
  • Industrial

11: Joints in piping for refrigeration containing parts must withstand temperatures of ___?

  • 800F
  • 700F
  • 1000F
  • 600F

12: Refrigerants shall be classified by

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

13: Pressure vessels with an internal volume of 3 cubic feet or more

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

14: Who approves containers for refrigerants?

  • E.P.A
  • D.O.D
  • D.O.E
  • D.O.T

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

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

16: When air is ducted through a machine room that services occupied space, What must be done?

  • Welded and seamed.
  • Ducted and sealed
  • Flanged and gasketed
  • Insulated and cross broke

17: A class B1 refrigerant is considered

  • toxic but non-flammable
  • non-toxic and non-flammable
  • toxic and somewhat flammable
  • non-toxic but highly flammable

18: A Category D fluid

  • is when the fluid handled is non flammable, nontoxic, and not damaging to human as defined in ANSI/ASME Process Piping.
  • is when the design pressure does not exceed 150 psi
  • a fluid for service piping in which the potential for personnel exposure is judged to cause harm and irreversible damage to those persons exposed to it
  • Both a and b are correct

19: Ammonia can come in contact with _______ ?

  • Brass
  • Aluminum
  • Copper tubing
  • Copper

20: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8

  • the vapor side of the system
  • the liquid side of the system
  • high side of the system
  • low side of the system

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

  • Magnesium alloy
  • Stainless Steel
  • Copper
  • Aluminum

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

  • Instituional
  • Place of assembly
  • Industrial
  • Large mercantile

23: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.

  • True
  • False

24: Refrigerant restricted in 2004 but used for transition for decades:

  • R-22
  • R-123
  • R-11
  • R-134A

25: Before you change the type of refrigerant in a refrigeration system, what three things must be done?

  • make sure it's compatible, notify owner, notify A.H.J
  • nothing must be done
  • you can't change refrigerants
  • place sign, check for leaks, insulate