ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What is not a requirement of a class T machine room?

  • self-closing doors
  • fire hose connection to the building fire protection system
  • automatic ventilation
  • tight fitting doors

2: What would be the classification of a prison?

  • Large mercantile
  • Industrial
  • Institutional
  • Place of assembly

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

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

4: R-11 belongs to Group

  • A-2
  • A-1
  • B-3
  • B-1

5: Class A refrigerants are considered

  • flammable
  • non-flammable
  • non-toxic
  • toxic

6: Methyl Chloride is a halogenated refrigerant and should not come in contact with

  • aluminum
  • zinc
  • magnesium
  • all of the above

7: 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.

8: 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

9: Relief valves are rated in

  • gallons of water per minute
  • gallons of water per hour
  • pounds of air per hour
  • pounds of air per minute

10: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?

  • 100,000
  • 1,000
  • 100
  • 10,000

11: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of

  • the ASME Boiler and Pressure Vessel Code
  • Section 11.3.1.5 ASHRAE 15 Standard
  • the ANSI Standard 10.7.2
  • both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5

12: What type of material can't be used on the outlet of a relief valve?

  • Magnesium alloy
  • PVC
  • Stainless steel
  • Copper

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

  • 20'
  • 15'
  • 25'
  • 30'

14: The 522 CMR 9.00 has adopted for reference ASHRAE ____

  • 10
  • III
  • 25
  • 15

15: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into

  • the low-pressure side of the system
  • the high side of the system
  • the liquid receiver
  • both a and c are correct

16: Evaporators within 18" of a heating coil must be equipped with a

  • low limit control
  • zone valve
  • high limit control
  • pressure relief device

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

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

18: Halo-carbon refrigerants cannot be used with what material?

  • Magnesium alloy
  • Copper
  • Stainless Steel
  • Aluminum

19: How many different groups of refrigerants are there?

  • 3
  • 11
  • 15
  • 7

20: A relief valve discharge capacity is rated in

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

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

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

22: Halogen refrigerants are corrosive to which type of metal?

  • magnesium
  • stainless steel
  • black iron
  • copper

23: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered

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

24: Pressure vessels with an internal volume of 3 cubic feet or more

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

25: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the

  • boiler
  • compressor
  • outside the machinery room
  • evaporator