ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Most CFC's are

  • inert but toxic
  • toxic
  • inert
  • flammable

2: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.

  • 250
  • 100
  • 350
  • 400

3: An example of direct system is

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

4: 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

5: A restaurant is classified as a

  • mixed occupancy
  • commercial occupancy
  • public assembly occupancy
  • large mercantile occupancy

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

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

7: The discharge relief valve is located (9.4.6)

  • on top of the condensor
  • between the compressor and oil separator
  • between the compressor and reciever
  • between the compressor and the stop valve

8: Which occupancy can ammonia be used in?

  • commercial
  • industrial
  • depends on the quantity of freon
  • redifential

9: Can ammonia be used on domestic system?

  • no
  • yes
  • no, unless there is proper ventilation system installed
  • yes, for systems under 10 tons

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

  • 10
  • 1
  • 50
  • 100

11: Can a R22 line set be reused for a 410A system and if it can be reused, what must be done to it?

  • Flush with R-718
  • Flush with ammonia
  • Flush with RX-11
  • Flush with R-11

12: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of

  • the ASME Boiler and Pressure Vessel Code
  • Section 11.3.1.5 ASHRAE 15 Standard
  • the ANSI Standard 10.7.2
  • both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5

13: Halo-carbon refrigerants cannot be used with what material?

  • Aluminum
  • Magnesium alloy
  • Stainless Steel
  • Copper

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

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

15: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.

  • low pressure
  • design pressure
  • critical pressure
  • high pressure

16: Trichlorofluoromethane is the name of what refrigerant?

  • R-502
  • R-12
  • R-11
  • R-113

17: Setting a pressure relief device shall not exceed ___ of the design pressure

  • 80%
  • 75%
  • 90%
  • 100%

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

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

19: R-22 is considered a(n)

  • HCFC
  • CFC
  • HFC
  • HCFCH

20: Halogenated refrigerants cannot be used with what material?

  • Stainless steel
  • Magnesium alloy
  • Aluminum
  • Copper

21: Pressure vessels with an internal volume of 3 cubic feet or less

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

22: Who authorizes changes to the safety codes?

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

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

  • Foot valve
  • Muffler
  • Moisture indicator
  • Stop valve

24: Pressure vessels with an internal volume of 10 cubic feet or more

  • shall use pressure relief devices or fusible plugs
  • shall use rupture discs or duel pressure relief valves
  • shall use fusible plugs
  • shall use pressure relief devices

25: How many refrigerant classifications are there for toxicity?

  • 2
  • 1
  • 3
  • 5