ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What is Trichlorotrifluoromethane?

  • R-13
  • R-12
  • R-113
  • R-11

2: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

3: When a refrigeration or air conditioning system is installed

  • it shall not be operated below prescribed pressures
  • the form of certificate shall be authorized by the Department of Pubic safety
  • it shall be approved by the owner for proper operation.
  • a field inspection shall be made before it is put into service

4: A hotel is considered a _______ occupancy.

  • institutional
  • residential
  • mercantile
  • commercial

5: What section of ASHRAE-15 governs pressure vessels?

  • Section 9 ASHRAE-15 ASME VIII unfired
  • Section 7 ASHRAE-15 ASME VIII fired
  • OSHA
  • Section 6 ASHRAE-34 ASME VIII unfired

6: What is the refrigerant dichlorodifluoromethane?

  • R-134A
  • R-123
  • R-22
  • R-12

7: Which of the following is an inorganic refrigerant?

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

8: Machinery rooms must be vented to ______?

  • neutralizing tank
  • unoccupied spaces
  • basement
  • outdoors

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

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

10: What happens after your initial inspection of a pressure vessel?

  • Notify the Fire Marshal that the system has been inspected and approved
  • Notify the AHJ to let them know that the system been inspected
  • There is a temporary shut-down until a final inspection can be performed.
  • Inspector leaves a metal tag with a certification listed on it

11: Which refrigerant(s) is an HFC?

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

12: Pressure vessels of 10 cubic feet or more gross volume shall use

  • at least one rupture member
  • a dual pressure-relief valve if charging into the atmosphere
  • at least three means of discharge and/or rupture discs
  • both a and b are correct

13: When should a relief valve start to function?

  • Before the purge station discharges
  • 10 psi before it's set pressure
  • At it's set pressure
  • Two times it's working pressure

14: 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.

  • 400
  • 350
  • 250
  • 100

15: B3 refrigerants are considered

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

16: All welding done on any refrigeration system or piping covered by 522 CMR 9.00 shall be performed by a according to Section IX of the ASME code

  • licensed technician
  • competent welder
  • welder qualified
  • licensed welder

17: 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)

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

18: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and

  • explosion precautions must be taken
  • gas masks must be worn
  • no flames shall be permitted
  • the owner shall be informed

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

  • 90%
  • 75%
  • 100%
  • 80%

20: How many groups of refrigerants are there?

  • 3
  • 1
  • 7
  • 5

21: Ammonia (NH3) is a group III refrigerant

  • True
  • False

22: How far from the window does a relief valve need to be according to ASHRAE-15?

  • There is no minimum for relief valve and windows.
  • At least 40'
  • At least 30'
  • At least 20'

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

  • 36"
  • 24"
  • 18"
  • 12"

24: Which of the following are considered inorganic refrigerants?

  • R-717 and R-718
  • 410A and R-407C
  • R-500 and R-502
  • None of the above

25: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 22
  • 18
  • 50
  • 33