ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • True
  • False

2: What type of relief valve is used on low pressure centrifugal compressor systems?

  • Spring-loaded relief valve
  • Rupture disc
  • Purge relief
  • None of the above

3: What would be the classification of a prison?

  • Large mercantile
  • Industrial
  • Institutional
  • Place of assembly

4: A movie theater would be considered a

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

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

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

6: What is the refrigerant chlorodifluoromethane?

  • R-12
  • R-22
  • R-123
  • R-134a

7: Who authorizes changes to the safety codes?

  • Person in charge of the facility
  • Person who pulled the permit
  • Board of Boilers
  • Contractor who last serviced the system.

8: Trichlorofluoromethane is the name of what refrigerant?

  • R-113
  • R-502
  • R-12
  • R-11

9: What is the minimum size of the discharge pipe?

  • Same size as the outlet of the relief valve
  • One pipe size larger that the inlet of the relief valve
  • Depends on size of manifold
  • All of the above

10: Where are the three places that the discharge from an ammonia relief valve be piped?

  • atmosphere, tank containing water, where the A.H.J. indicates
  • underground, into drain, into mechanical room
  • to chemical neutralizing tank only
  • none of the above

11: An example of direct system is

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

12: Dual-pressure relief devices should be installed on

  • vessels of 10 cubic feet or less
  • vessels of 10 cubic feet or more
  • vessels of 3 cubic feet or more
  • vessels of 3 cubic feet or less

13: All electrical work done on refrigeration systems must comply with

  • ASHREA-15 Section 9.2.1
  • Department of Energy
  • OSHA
  • NEC and Massachusetts Modifications

14: 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
  • 2.5 times the design pressure
  • the high side
  • the low side

15: How many gallons of water per pound of ammonia do you need?

  • 5
  • 20
  • 15
  • 1

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

  • DOT
  • RSES
  • EPO
  • EPA

17: Relief valves are rated in

  • gallons of water per minute
  • pounds of air per hour
  • gallons of water per hour
  • pounds of air per minute

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

  • Copper
  • Zinc
  • Nickel
  • Magnesium

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

  • 10'
  • 25'
  • 15'
  • 36'

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

  • 22
  • 18
  • 33
  • 50

21: When must refrigeration system covered by the code be inspected?

  • Upon installation
  • Not required
  • Annually
  • Annually and when installed

22: _____ and its alloys are suitable for use with ammonia systems.

  • Aluminum
  • Copper
  • Magnesium
  • Zinc

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

  • Coated
  • Certified
  • Encased
  • Leaked checked

24: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.

  • HCFC-123
  • Lithium bromide
  • CFC-11
  • ammonia

25: Pipe identification labels are required when the system contains more than

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