ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.

  • the atmosphere
  • a de-pressurized recovery tank with a silver top and yellow bottom
  • a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
  • All of the above

2: 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

3: A class B2 refrigerant is considered

  • toxic and non-flammable
  • non-toxic and non-flammable
  • non-toxic and highly flammable
  • toxic and somewhat flammable

4: R-11 belongs to Group

  • A-2
  • B-1
  • A-1
  • B-3

5: 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
  • 100
  • 1,000
  • 10,000

6: Pressure vessels nameplate markings must be compliant with the

  • ASHRAE 34 Standards
  • CMR-588 & CMR-528
  • ASME Boiler and Pressure Vessel Code
  • All of the Above

7: A relief valve discharge capacity is rated in

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

8: A movie theater would be considered a

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

9: Trichlorofluoromethane is the name of what refrigerant?

  • R-502
  • R-12
  • R-11
  • R-113

10: B3 refrigerants are considered

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

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

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

12: 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

13: What must be done if refrigeration lines pass through a concrete floor?

  • installed through a pipe casing
  • moisture barrier
  • insulated
  • leak checked

14: The certificate of inspection

  • shall be posted and protected from dirt, water, and other elements
  • shall be $20 and an additional fee of $1 for each tone above 20 tons
  • shall be authorized by a notarized insurance company
  • shall be posted on the compressor shell or electrical panel at the unit

15: Group A2 refrigerants have a ______ toxicity rating than Group B1 refrigerants.

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

16: Ammonia is under what safety classification?

  • B2
  • A3
  • B1
  • B3

17: Class T machine room

  • shall have refrigerant leak detecting systems installed inside and outside the room
  • shall have remote controls to stop the action of the refrigerant compressor
  • shall include closets used for setting equipment
  • has no flame producing apparatus permanently installed

18: Pipe identification labels are required when the system contains more than

  • 55 lbs
  • 65 lbs
  • 120 lbs
  • 110 lbs

19: What refrigerant doesn't have to be classifted?

  • R-134a
  • R-718
  • R-717
  • R-711

20: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.

  • 36
  • 18
  • 48
  • 24

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

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

22: What is a Category "M" fluid?

  • A typical refrigerant used on newer air conditioning and heat pump systems
  • Any fluid that exceeds 150 psig and has design temperatures over 366F
  • A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and the designed temperature is between -20F to 366F
  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily content

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

  • 25'
  • 30'
  • 20'
  • 15'

24: 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

25: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.

  • the mechanical room housing the refrigeration system
  • Machinery rooms need not be vented
  • the outdoors
  • the return air ducted system