ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What type of material can't be used on the outlet of a relief valve?

  • Stainless steel
  • Magnesium alloy
  • PVC
  • Copper

2: A hotel is considered a _______ occupancy.

  • mercantile
  • commercial
  • residential
  • institutional

3: All machine rooms must be outfitted with a detector that _______?

  • activates an audible alarm
  • activates a visual alarm
  • starts the ventilation system
  • All of the above

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

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

5: Which of the following are considered inorganic refrigerants?

  • R-717 and R-718
  • 410A and R-407C
  • R-500 and R-502
  • None of the above

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

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

7: 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

8: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a

  • mercantile occupancy
  • business occupancy
  • commercial occupancy
  • public assembly occupancy.

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

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

10: The 522 CMR 9.00 has adopted for reference ASHRAE ____

  • III
  • 10
  • 15
  • 25

11: Class A refrigerants are considered

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

12: How many different groups of refrigerants are there?

  • 11
  • 15
  • 3
  • 7

13: Ammonia is under what safety classification?

  • A3
  • B3
  • B2
  • B1

14: What is the refrigerant chlorodifluoromethane?

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

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

  • True
  • False

16: Stop valves shall not be permitted between the system and the

  • relief valve
  • condenser
  • bleed valve
  • service valve

17: A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)

  • institutional occupancy
  • commercial occupancy
  • public assembly occupancy
  • illegal occupancy

18: What do you need to do when you install a new system?

  • Have it inspected
  • Document the superheat and subcooling reading
  • Insulate the suction line before you take a superheat reading
  • Add refrigerant

19: What would be the classification of a prison?

  • Institutional
  • Industrial
  • Place of assembly
  • Large mercantile

20: R-717 is

  • water
  • carbon dioxide
  • trichloromethane
  • ammonia

21: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)

  • Pressure gauge
  • Temperature gauge
  • Sight glass gauge
  • All of the above

22: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.

  • True
  • False

23: 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

24: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.

  • 75%
  • 99%
  • 90%
  • 80%

25: 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