ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: An example of direct system is

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

2: R-123 belongs to Group

  • B-1
  • B-3
  • A-3
  • B-2

3: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.

  • the outdoors
  • the return air ducted system
  • the mechanical room housing the refrigeration system
  • Machinery rooms need not be vented

4: 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

5: R-717 is

  • ammonia
  • carbon dioxide
  • trichloromethane
  • water

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

  • Stainless steel
  • PVC
  • Magnesium alloy
  • Copper

7: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.

  • 8'4"
  • 7.25'
  • 7.00'
  • 9.00'

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

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

9: R-410A is classified as a ____ refrigerant on the safety matrix.

  • B-1
  • A-1
  • A-2
  • B-2

10: What is not a requirement of a class T machine room?

  • automatic ventilation
  • tight fitting doors
  • fire hose connection to the building fire protection system
  • self-closing doors

11: Liquid level gauges must be provided with what?

  • A relief valve
  • A low level mark
  • Automatic shut-offs
  • A red line

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

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

13: A pressure relief should be located at least _______ from windows and doors.

  • 25'
  • 20'
  • 30'
  • 15'

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

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

15: 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

  • compressor
  • boiler
  • outside the machinery room
  • evaporator

16: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?

  • CO Sensing
  • phosgene gas sening
  • A group sensing
  • refrigerant sensing

17: What type of pressure relief device is used on a CO2 system?

  • Gate valve
  • Fusible plug
  • Glove valve
  • Rupture disk

18: Industrial occupancy is

  • a premise or that portion of a premise that is not open to the public, where access by authorized persons is controlled, and that is used to manufacture, process, or store goods, such as chemicals, food, ice, meat, or petroleum.
  • is a premise or that portion of a premise where large number of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • Both a and b are correct

19: What refrigerant is an inorganic compound?

  • R-22
  • Ammonia
  • R-132A
  • R-410A

20: Methyl Chloride is a halogenated refrigerant and should not come in contact with

  • aluminum
  • zinc
  • magnesium
  • all of the above

21: How many refrigerant classifications are there for toxicity?

  • 5
  • 3
  • 2
  • 1

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

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

23: What section governs pressure vessels?

  • Section 8 ASHREA 15 ASME unfired
  • Section 1 ASHREA 15 ASME fired
  • Section ASHREA 34
  • OSHA

24: Relief valves are rated in

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

25: 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