ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: R-717 is

  • trichloromethane
  • carbon dioxide
  • ammonia
  • water

2: The certificate of inspection

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

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

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

4: pressure relief valves must discharge to the atmosphere at a location not less than 15 feet from ground level and ____ feet from any window, ventilation opening, or exits of buildings.

  • 20
  • 15
  • 25
  • 10

5: 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.

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

6: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?

  • When it's used as part of a supply or return air system
  • When its white
  • When there is a space 6' or more above it
  • When there are sprinklers above

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

  • 800F
  • 700F
  • 600F
  • 1000F

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

  • nothing must be done
  • place sign, check for leaks, insulate
  • make sure it's compatible, notify owner, notify A.H.J
  • you can't change refrigerants

9: Which refrigerant class listed below is the most flammable?

  • A-3
  • C-3
  • B-2
  • A-1

10: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered

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

11: Pressure vessels having an inside diameter of 6” or less shall be protected by

  • either a fusible plug or a pressure relief device
  • a fusible plug
  • Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
  • a pressure relief device

12: When a refrigeration or air conditioning system is installed

  • the form of certificate shall be authorized by the Department of Pubic safety
  • a field inspection shall be made before it is put into service
  • it shall be approved by the owner for proper operation.
  • it shall not be operated below prescribed pressures

13: Fusible plugs must have what marked on them?

  • Melting temperature in F
  • Melting temperature in C
  • Opening pressure
  • All of the above

14: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.

  • 100
  • 250
  • 400
  • 350

15: 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

16: 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

17: Halogen refrigerants are corrosive to which type of metal?

  • copper
  • stainless steel
  • magnesium
  • black iron

18: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.

  • 24
  • 18
  • 10
  • 15

19: 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

20: Defined process piping by code CMR (528)

  • Any piping that conveys a solid, liquid or gas that is not part of the plumbing or fire protection system
  • Any piping in an industrial space
  • Any piping in an industrial or commercial space
  • All of the above

21: How far from the window does a relief valve need to be according to ASHRAE-15?

  • At least 30'
  • At least 20'
  • At least 40'
  • There is no minimum for relief valve and windows.

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

  • R-12
  • R-11
  • R-22
  • R-113

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

  • 36
  • 24
  • 48
  • 18

24: What is R-22?

  • HFC
  • Chlorodifluoromethane
  • CCFCM
  • Chlorofluoromethane

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

  • 24"
  • 18"
  • 12"
  • 36"