ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

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

2: R-11 belongs to Group

  • B-1
  • B-3
  • A-1
  • A-2

3: 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.

  • 350
  • 400
  • 250
  • 100

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

  • R-22
  • R-12
  • R-11
  • R-113

5: A High-Probablity system

  • is such that a leak of refrigerant from failed connections will enter the unoccupied space
  • is such that any leak will cause injury or death to anyone within a 100 square foot area
  • is a system highly likely to leak from a failed connection or component of such system
  • is such that a leak of refrigerant from failed connections will enter the occupied space

6: What is an egress?

  • A valve put on the low side of the system to prevent frosting
  • An escape route
  • A code violation
  • An entrance or exit

7: 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

8: A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)

  • institutional occupancy
  • commercial occupancy
  • public assembly occupancy
  • illegal occupancy

9: Which refrigerant(s) is an HFC?

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

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

  • 2.5
  • 2.0
  • 3.0
  • 5.5

11: R-717 is

  • carbon dioxide
  • ammonia
  • trichloromethane
  • water

12: How much refrigerant can be stored in a mechanical room outside of the system?

  • 100
  • 150
  • 330
  • 200

13: 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

14: The main purpose of a refrigerant detector in a machinery room is to

  • inform there is a refrigerant leak int he system
  • detect toxins in the air caused by a refrigerant leak
  • to set off an alarm when there is refrigerant present inside the room
  • all of the above

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

  • 100%
  • 75%
  • 90%
  • 80%

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

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

17: The Board of Boilers adopts by reference

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

18: How much clearance do you need around the perimeter of electrical panels?

  • 36"
  • 12"
  • 18"
  • 24"

19: 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

20: The discharge relief valve is located (9.4.6)

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

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

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

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

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

23: Pressure relief valves shall be marked with the data from

  • Section XIII Division of the ASME Boiler & Pressure Code
  • Section VIII Division of the ASME Boiler & Pressure Code
  • Section IV Division of the ASME Boiler & Pressure Code
  • Section I Division VIII of ASME Boiler & Pressure Code

24: 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

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

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