ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?

  • Moisture indicator
  • Foot valve
  • Muffler
  • Stop valve

2: What does safe access mean?

  • Locked doors
  • A clear unobstructed path to the equipment and controls
  • OSHA approved
  • Well-lit exit signs

3: The gauge thickness required on a CO2 tank construction is

  • 1/16"
  • 5/16"
  • 3/32"
  • 1/8"

4: A class A3 refrigerant is considered

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

5: 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.

6: 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

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

8: A plug containing an alloy that will melt at a specific temperature to relief pressure is a

  • relief plug
  • fusible plug
  • fusion plug
  • rupture plug

9: Large mercantile occupancy is

  • a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise

10: System design pressures must take into consideration, not only, pressures found during normal operation but also what?

  • When it's cold out
  • When there is a malfunction on the high side
  • When its warm out
  • All of the above

11: What is not a requirement of a Class T machine room?

  • Tight fitting doors
  • Automatic ventilation
  • Fire hose connected to the building fire protection system.
  • Self-closing doors

12: Refrigerant restricted in 2004 but used for transition for decades:

  • R-123
  • R-22
  • R-134A
  • R-11

13: 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.

  • 10
  • 20
  • 15
  • 25

14: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the

  • outside the machinery room
  • evaporator
  • compressor
  • boiler

15: Class T machine room

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

16: What is the refrigerant chlorodifluoromethane?

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

17: Name three things that must be done when changing refrigeration lubricant?

  • You can't change lubricants.
  • Make sure it's compatible, notify owner, notify AHJ
  • Place sign, check for leaks, insulate
  • Nothing must be done

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

  • bleed valve
  • condenser
  • service valve
  • relief valve

19: A movie theater would be considered a

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

20: R-123 belongs to Group

  • B-3
  • B-2
  • A-3
  • B-1

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

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

22: What is Trichlorotrifluoromethane?

  • R-12
  • R-113
  • R-13
  • R-11

23: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.

  • 1
  • 1.2
  • 1.5
  • 2.2

24: 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

25: Who approves containers for refrigerants?

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