ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Ammonia (NH3) is a group III refrigerant

  • True
  • False

2: Class A refrigerants are considered

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

3: What do you need to do when you install a new system?

  • Have it inspected
  • Add refrigerant
  • Insulate the suction line before you take a superheat reading
  • Document the superheat and subcooling reading

4: NH3 is

  • ammonia
  • R-508A
  • R-718
  • lithium bromide

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

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

6: The dial of a pressure gauge, when installed on the high side of a system be graduated 1.2 times the designed pressure.

  • True
  • False

7: R-22 is classified as a ____ refrigerant on the safety matrix.

  • A-1
  • B-2
  • A-2
  • B-1

8: 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

9: Who approves containers for refrigerants?

  • D.O.E
  • E.P.A
  • D.O.T
  • D.O.D

10: Pressure vessel having an inside diameter exceeding 6” with an internal pressure greater than 15psig shall be marked directly on or on the nameplate the letters _______________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • “UM” and “UV”
  • “UV”
  • “U” or “UM”
  • “UL”

11: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within

  • 2 months
  • 1 week
  • 30 days
  • 14 days

12: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.

  • True
  • False

13: What is the intention of the word “should” as used in the code?

  • A mandatory requirement
  • A recommendation or advisory guideline
  • A technician’s choice of how it should be done
  • None of the Above

14: 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

15: Pressure limiting devices are not required for systems containing less then ________ refrigerants.

  • 13.9 lbs
  • 44 lbs
  • 22 lbs
  • 6.6 lbs

16: How many flammability classifications are refrigerants in?

  • 7
  • 2
  • 5
  • 3

17: Pressure relief valves shall be marked with the data from

  • Section VIII Division of the ASME Boiler & Pressure Code
  • Section IV Division of the ASME Boiler & Pressure Code
  • Section XIII Division of the ASME Boiler & Pressure Code
  • Section I Division VIII of ASME Boiler & Pressure Code

18: A plug containing an alloy that will melt at a specific temperature to relief pressure is a

  • fusible plug
  • fusion plug
  • rupture plug
  • relief plug

19: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8

  • the liquid side of the system
  • the vapor side of the system
  • high side of the system
  • low side of the system

20: B3 refrigerants are considered

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

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

  • True
  • False

22: A class B2 refrigerant is considered

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

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

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

24: Which of the following is an inorganic refrigerant?

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

25: What must be done to all doors and access points in duct work going through a mechanical room?

  • Must be hindged
  • Must be screwed shut
  • Must be sealed and gasketed
  • All of the above