ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.

  • 7.00'
  • 9.00'
  • 7.25'
  • 8'4"

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

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

3: 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

4: Which refrigerant class listed below is the most flammable?

  • B2
  • A3
  • C3
  • A2

5: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code

  • over pressure protection and a rupture disc
  • Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
  • over pressure protection as well as a temperature protection device
  • over pressure protection

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

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

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

  • Nothing must be done
  • Make sure its compatible, notify owner, and notify AHJ.
  • you can never change refrigerants
  • Place sign, check for leaks, and insulate suction line

8: A movie theater would be considered a

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

9: Group A3 refrigerants have a ______ flammability rating than Group B1 refrigerants

  • there is no Group B1 refrigerants
  • lower
  • the same
  • higher

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

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

11: Joints in refrigeration piping must be _____ before being covered?

  • Pressurized
  • Insulated
  • Inspected
  • Leak tested

12: Name a CFC refrigerant(s):

  • R-11
  • R-12
  • R-123
  • both a & b

13: Low temperature systems should have what?

  • High pour point
  • Low pour point
  • High viscosity
  • None of the above

14: The color code of a tank of ammonia is

  • white
  • silver
  • light green
  • lavender

15: There can be no airflow from an occupied space through a machine room unless what?

  • System is high velocity
  • System is ducted and sealed
  • Duct is not located in the ceiling
  • None of the above.

16: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • UM or UL
  • UL and UM
  • UL and UR
  • UV or UR

17: R-717 is

  • trichloromethane
  • ammonia
  • water
  • carbon dioxide

18: What type of relief valve is used on a CO2 system?

  • gate valve
  • fusible plug
  • glove disc
  • rupture disc

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

  • 550 lbs
  • 660 lbs
  • 55 lbs
  • 330 lbs.

20: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.

  • 99%
  • 80%
  • 75%
  • 90%

21: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.

  • 1.5
  • 1
  • 1.2
  • 2.2

22: Machinery rooms must be vented to ______?

  • unoccupied spaces
  • neutralizing tank
  • basement
  • outdoors

23: What is Trichlorotrifluoromethane?

  • R-11
  • R-113
  • R-13
  • R-12

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.

  • 15
  • 75
  • 55
  • 50

25: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.

  • 100
  • 350
  • 550
  • 50