ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What is Trichlorotrifluoromethane?

  • R-113
  • R-13
  • R-11
  • R-12

2: What type of copper is not permitted on refrigeration systems?

  • Type N
  • Type K
  • Type M
  • Type L

3: 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

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

  • 25'
  • 10'
  • 15'
  • 36'

5: 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

6: Pressure vessels with an internal volume of 3 cubic feet or less

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

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

8: R-22 falls under which safety classification?

  • A-1
  • B-1
  • B-2
  • A-2

9: 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.

  • 100
  • 400
  • 250
  • 350

10: A pressure relief should be located at least _______ from windows and doors.

  • 30'
  • 20'
  • 15'
  • 25'

11: Ammonia belongs to Group

  • A-1
  • A-2
  • B-1
  • B-2

12: What type of relief valve is used on low pressure centrifugal compressor systems?

  • Spring-loaded relief valve
  • Rupture disc
  • Purge relief
  • None of the above

13: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere

  • 1,000
  • 330
  • 6.6
  • 110

14: Liquid shall not occupy more than ____ of the volume when the temperature of the refrigerant is 90F.

  • 75%
  • 80%
  • 90%
  • 100%

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

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

16: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.

  • True
  • False

17: How many refrigerant classifications are there for toxicity?

  • 2
  • 3
  • 5
  • 1

18: A person holding a license as a refrigeration technician may connect or disconnect for the purpose of installation, repair, or replacement, any electrical device or control to be a part of a refrigeration or air conditioning system, from the

  • first disconnect in
  • breaker panel in
  • load-side of the contactor in
  • 24 volt secondary side of the Class 2 transformer to the thermostat

19: Large mercantile occupancy is

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

20: Refrigerants shall be classified by

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

21: What would be the classification of a church?

  • Industrial
  • Institutional
  • Place of assembly
  • Large mercantile

22: 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

23: What type refrigerant is NOT ozone depleting?

  • CFC
  • HFC
  • HCFC
  • Halon

24: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.

  • 75
  • 15
  • 50
  • 55

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

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