ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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”
  • “UM” and “UV”
  • “U” or “UM”
  • “UV”

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

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

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

4: _____ alloys shall not be used in contact with an halogenated refrigerants.

  • Copper
  • Zinc
  • Nickel
  • Magnesium

5: Where must a refrigeration contractor's license number be displayed?

  • Trucks, invoices, and advertising
  • Trucks, license plates, and uniforms
  • Uniforms, checks, and invoices.
  • Truck, office, every job, and on all equipment

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

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

7: Trichlorofluoromethane is the name of what refrigerant?

  • R-12
  • R-113
  • R-11
  • R-502

8: What must be done to refrigerant pipes before being buried?

  • Certified
  • Leaked checked
  • Encased
  • Coated

9: 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

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

  • copper
  • black iron
  • stainless steel
  • magnesium

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

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

12: The Department that certifies the transportation of refrigerant is the

  • EPO
  • DOT
  • RSES
  • EPA

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

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

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

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

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

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

16: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.

  • True
  • False

17: Systems containing more than 110 pounds must have stop valves located at the

  • compressor suction inlet
  • compressor discharge outlet
  • receiver inlet and outlet
  • All of the above

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

  • 36"
  • 12"
  • 24"
  • 18"

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

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

20: A relief valve shall be located at least ___ above grade.

  • 36'
  • 10'
  • 25'
  • 15'

21: Refrigerants shall be classified by

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

22: When a refrigeration or air conditioning system is installed

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

23: Class 3 refrigerants are

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

24: What must be done if refrigeration lines pass through a concrete floor?

  • moisture barrier
  • leak checked
  • insulated
  • installed through a pipe casing

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

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