ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What is an egress?

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

2: How many refrigerant classifications are there for flammability?

  • 2
  • 7
  • 1
  • 3

3: Which of the following is an inorganic refrigerant?

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

4: Can you use Ammonia in industrial applications?

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

5: What type refrigerant is NOT ozone depleting?

  • HCFC
  • HFC
  • Halon
  • CFC

6: Large vessels containing refrigerant ______________________ from using two or more pressure-relief devices in parallel to obtain the required capacity.

  • containing R-11, R-123 & R-717 exclusively shall not be prohibited
  • of Group B2 refrigerant shall be prohibited
  • shall be prohibited
  • shall not be prohibited

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

  • Zinc
  • Copper
  • Magnesium
  • Aluminum

8: R-717 is

  • ammonia
  • trichloromethane
  • water
  • carbon dioxide

9: A plug containing an alloy that will melt at a specific temperature to relief pressure is a

  • rupture plug
  • fusion plug
  • fusible plug
  • relief plug

10: A machine room with a refrigerant system using ammonia shall

  • be provided with a continuously operated ventilation system
  • be considered a non-hazardous location in accordance with National Electrical code
  • have no flame producing apparatus permanently installed and operated
  • All of the above

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

  • 50
  • 25
  • 22
  • 66

12: When must refrigeration system covered by the code be inspected?

  • Upon installation
  • Annually and when installed
  • Annually
  • Not required

13: How many groups of refrigerants are there?

  • 3
  • 7
  • 1
  • 5

14: How many different groups of refrigerants are there?

  • 7
  • 3
  • 11
  • 15

15: What pipe can not be used for refrigeration?

  • M
  • L
  • N
  • K

16: R-22 is considered a(n)

  • HFC
  • HCFCH
  • CFC
  • HCFC

17: 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
  • 50
  • 55
  • 15

18: A relief valve discharge capacity is rated in

  • Pounds of air per minute.
  • PSIA
  • PSIG
  • temperature minus pounds of air per second divided by release rate squared

19: How are refrigerant blends classified?

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

20: Ammonia (NH3) is a group III refrigerant

  • True
  • False

21: Where a refrigeration or air conditioning system is installed,

  • A field inspection shall be made before it is put into service
  • the form or certificate shall be authorized by the Department of Public Safety
  • The company who installed the system must notify the fire department in the jurisdiction where installed
  • it shall not be operated below prescribed pressuers

22: R-22 falls under which safety classification?

  • A-1
  • B-1
  • A-2
  • B-2

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

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

24: Where must a refrigeration contractor's license number be displayed?

  • Trucks, invoices, and advertising
  • Truck, office, every job, and on all equipment
  • Trucks, license plates, and uniforms
  • Uniforms, checks, and invoices.

25: Ammonia belongs to Group

  • A-2
  • B-1
  • A-1
  • B-2