ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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

2: Low temperature systems should have what?

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

3: Setting a pressure relief device shall not exceed ___ of the design pressure

  • 80%
  • 100%
  • 90%
  • 75%

4: How much clearance do you need around the perimeter of electrical panels?

  • 36"
  • 18"
  • 24"
  • 12"

5: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 33
  • 22
  • 18
  • 50

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

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

7: 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

8: What does safe access mean?

  • OSHA approved
  • A clear unobstructed path to the equipment and controls
  • Well-lit exit signs
  • Locked doors

9: Indirect systems using Group II refrigerants

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

10: The discharge relief valve is located (9.4.6)

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

11: The main purpose of a refrigerant detector in a machinery room is to

  • inform there is a refrigerant leak int he system
  • detect toxins in the air caused by a refrigerant leak
  • to set off an alarm when there is refrigerant present inside the room
  • all of the above

12: 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

13: Which refrigerant(s) is an HFC?

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

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

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

15: All serviceable components of a refrigeration system shall be provided with

  • service manuals
  • name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
  • manufactures instructions on start-up procedures
  • safe access

16: Direct systems using Group II refrigerants

  • shall be allowed to be used for human comfort.
  • shall not be used for air condition for human comfort
  • shall be installed per instruction of the AHJ
  • shall be installed in Class T machinery rooms

17: What section of ASHRAE-15 governs pressure vessels?

  • OSHA
  • Section 9 ASHRAE-15 ASME VIII unfired
  • Section 6 ASHRAE-34 ASME VIII unfired
  • Section 7 ASHRAE-15 ASME VIII fired

18: Most CFC's are

  • inert but toxic
  • toxic
  • flammable
  • inert

19: Joints in piping for refrigeration containing parts must withstand temperatures of ___?

  • 700F
  • 600F
  • 1000F
  • 800F

20: 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

  • evaporator
  • compressor
  • boiler
  • outside the machinery room

21: What is the minimum height refrigeration piping should be placed against walls?

  • Ceiling height
  • 6'
  • 7.25'
  • 72"

22: Ammonia (NH3) is a group III refrigerant

  • True
  • False

23: What is a Category "D" fluid?

  • A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and design temperature is between -20F to 366F
  • 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

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

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

25: A declaration test is needed when the system contains more than

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