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

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

3: Joints in refrigeration piping must be _____ before being covered?

  • Inspected
  • Pressurized
  • Insulated
  • Leak tested

4: The discharge relief valve is located (9.4.6)

  • between the compressor and reciever
  • between the compressor and the stop valve
  • on top of the condensor
  • between the compressor and oil separator

5: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?

  • R-11
  • R-22
  • R-12
  • R-113

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

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

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

  • Stainless steel
  • Copper
  • Magnesium alloy
  • PVC

8: When is the only time you can leave a service container attached to a system?

  • Leaking system
  • Recovery
  • Charging
  • Both b and c

9: When an inspection is needed, how often must it be done?

  • every 36 months
  • annually
  • every 18 months
  • every 24 months

10: How many CFMs are required per square foot of commercial office occupied space

  • 15 CFM
  • 20 CFM
  • 5 CFM
  • .5 CFM

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

  • True
  • False

12: Where a refrigeration or air conditioning system is installed,

  • A field inspection shall be made before it is put into service
  • the form or certificate shall be authorized by the Department of Public Safety
  • The company who installed the system must notify the fire department in the jurisdiction where installed
  • it shall not be operated below prescribed pressuers

13: Ammonia (NH3) is a group III refrigerant

  • True
  • False

14: 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.

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

15: Which refrigerant(s) is an HFC?

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

16: R-410A is classified as a ____ refrigerant on the safety matrix.

  • B-1
  • B-2
  • A-2
  • A-1

17: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.

  • 15
  • 55
  • 50
  • 75

18: What must be done to refrigerant pipes before being buried ?(8.10.4)

  • Insulated and installed in a pipe duct (Encased)
  • Certified
  • Leak checked
  • Classifed

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

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

20: Name an HCFC refrigerant(s):

  • R-22
  • R-123
  • R-11
  • both a & b

21: What is an egress?

  • An entrance or exit
  • An escape route
  • A code violation
  • A valve put on the low side of the system to prevent frosting

22: Trichlorofluoromethane is the name of what refrigerant?

  • R-11
  • R-12
  • R-502
  • R-113

23: What was the main reason for enacting the no venting rule of July 1, 1992?

  • Ozone depletion
  • Green house effect
  • Global warming potential
  • All of the above

24: A class A3 refrigerant is considered

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

25: An example of direct system is

  • rooftop unit
  • chiller
  • absorber
  • none of the above