ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Most CFC's are

  • flammable
  • inert but toxic
  • toxic
  • inert

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

  • 24"
  • 18"
  • 36"
  • 12"

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

  • 800F
  • 600F
  • 700F
  • 1000F

4: What type of copper is not permitted on refrigeration systems?

  • Type M
  • Type K
  • Type N
  • Type L

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

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

6: A room having machinery but no flame producing apparatus permanently installed and operated is considered a

  • Class B machinery room
  • Class M machinery room
  • Class A machinery room
  • Class T machinery room

7: What is Trichlorotrifluoromethane?

  • R-12
  • R-113
  • R-13
  • R-11

8: When a refrigeration or air conditioning system is installed

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

9: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?

  • 1,000
  • 10,000
  • 100,000
  • 100

10: Each machinery room shall contain

  • smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
  • high and low pressure controls
  • a refrigerant detector located in an area where the refrigerant from a leak will concentrate
  • a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate

11: 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

12: A class A3 refrigerant is considered

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

13: Class T machine room

  • shall include closets used for setting equipment
  • shall have refrigerant leak detecting systems installed inside and outside the room
  • shall have remote controls to stop the action of the refrigerant compressor
  • has no flame producing apparatus permanently installed

14: Direct systems using Group II refrigerants

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

15: Pressure vessels with an internal volume of 3 cubic feet or more

  • shall use pressure relief devices
  • shall use fusible plugs
  • do not need pressure relief protection
  • shall use pressure relief devices or fusible plugs

16: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and

  • no flames shall be permitted
  • gas masks must be worn
  • explosion precautions must be taken
  • the owner shall be informed

17: A positive displacement compressor is

  • a compressor in which the increase in pressure is attained by changing the internal pressure of the compression chamber
  • is a reciprocating type compressor with 2 or more pistons
  • where the compressor's suction pressure and the compressor;s discharge pressure is more than 50 PSI
  • a compressor in which the increase in pressure is attained by changing the internal volume of the compression chamber

18: R-22 is considered a(n)

  • HCFC
  • CFC
  • HCFCH
  • HFC

19: R-718 is rated unlimited for refrigeration quantity contained in a system. Why?

  • R-718 is not rated unlimited because it's a dangerous refrigerant
  • Because it's a non-flammable refrigerant
  • Because it's cheap
  • Because it's water

20: The color code of a tank of ammonia is

  • silver
  • white
  • light green
  • lavender

21: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant

  • shall have a pressure limiting device and a pressure relief valve installed
  • does not require a pressure-limiting device
  • shall have a pressure limiting device installed on the high side of the system
  • shall be inspected by the Boiler of Inspectors bi-annually

22: 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

23: How much refrigerant can be stored in a mechanical room outside of the system?

  • 150
  • 200
  • 330
  • 100

24: Who approves containers for refrigerants?

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

25: A hotel is considered a _______ occupancy.

  • commercial
  • residential
  • institutional
  • mercantile