ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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

2: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of

  • the high side
  • the aggregate of the high side and low side
  • 2.5 times the design pressure
  • the low side

3: Indirect systems using Group II refrigerants

  • shall be used in refrigeration system in excess of 1,000 lbs
  • shall be used for mechanical equipment only
  • shall be used in refrigeration system less than 1,000 lbs
  • shall have all refrigerant containing parts except piping, installed in a Class T machine room

4: Low temperature systems should have what?

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

5: What is a Category "D" fluid?

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

6: What type of relief valve is used on low pressure centrifugal compressor systems?

  • Spring-loaded relief valve
  • Rupture disc
  • Purge relief
  • None of the above

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

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

8: Class A refrigerants are considered

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

9: A relief valve discharge capacity is rated in

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

10: 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.

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

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

  • 24
  • 48
  • 36
  • 18

12: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a

  • mercantile occupancy
  • public assembly occupancy.
  • commercial occupancy
  • business occupancy

13: What refrigerant is an inorganic compound?

  • R-132A
  • R-22
  • Ammonia
  • R-410A

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

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

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

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

16: Refrigerants shall be classified by

  • requirements for commercial, industrial, and residential occupancies
  • toxicity and flammability
  • color codes
  • maximum permissible quantities of each group

17: High pressure controls should be set no higher than

  • 80% of set point
  • 25% of set point
  • 10% of set point
  • 90% of set point

18: 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.

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

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

20: Name three things that must be done when changing refrigeration lubricant?

  • Make sure it's compatible, notify owner, notify AHJ
  • Place sign, check for leaks, insulate
  • You can't change lubricants.
  • Nothing must be done

21: How far from the ground does a relief valve need to be?

  • At least 15' above grade
  • Not more than 3' above grade
  • At least 20' above grade
  • At least 25' above grade

22: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.

  • 20
  • 15
  • 50
  • 75

23: R-22 falls under which safety classification?

  • A-1
  • A-2
  • B-1
  • B-2

24: R-12. R-22, and R-40 are considered Group I refrigerants.

  • True
  • False

25: Pressure vessels having design pressures of 15 psig or less shall have the strength to withstand at least ______times the design pressure.

  • 2.5
  • 5.5
  • 2.0
  • 3.0