ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: The certificate of inspection

  • shall be posted and protected from dirt, water, and other elements
  • shall be $20 and an additional fee of $1 for each tone above 20 tons
  • shall be authorized by a notarized insurance company
  • shall be posted on the compressor shell or electrical panel at the unit

2: The discharge relief valve is located (9.4.6)

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

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

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

4: Who is permitted to access a refrigeration machine room?

  • Contractors only
  • Any employee
  • Anyone, it's a completely safe area
  • Authorized persons only

5: Ammonia can come in contact with _______ ?

  • Copper tubing
  • Brass
  • Copper
  • Aluminum

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

  • Copper
  • Zinc
  • Magnesium
  • Nickel

7: Pressure vessels having design pressures of 15 psig or less shall have the strength to withstand at least ______times the design pressure.

  • 3.0
  • 2.0
  • 5.5
  • 2.5

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

  • Magnesium alloy
  • Copper
  • Stainless Steel
  • Aluminum

9: When is the only time you can leave a service container attached to a system?

  • Leaking system
  • Recovery
  • Charging
  • Both b and c

10: How many flammability classifications are refrigerants in?

  • 3
  • 5
  • 7
  • 2

11: 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

12: What type refrigerant is NOT ozone depleting?

  • HCFC
  • HFC
  • Halon
  • CFC

13: How much refrigerant can be stored in a mechanical room outside of the system?

  • 150
  • 200
  • 330
  • 100

14: When air is ducted through a machine room that services occupied space, What must be done?

  • Flanged and gasketed
  • Welded and seamed.
  • Ducted and sealed
  • Insulated and cross broke

15: Trichlorofluoromethane is the name of what refrigerant?

  • R-113
  • R-502
  • R-12
  • R-11

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

  • 80%
  • 75%
  • 100%
  • 90%

17: What is Trichlorotrifluoromethane?

  • R-11
  • R-113
  • R-13
  • R-12

18: Which refrigerant class listed below is the most flammable?

  • C-3
  • B-2
  • A-1
  • A-3

19: Class A refrigerants are considered

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

20: Joints in piping for refrigeration containing parts must withstand temperatures of ___?

  • 800F
  • 1000F
  • 600F
  • 700F

21: Liquid shall not occupy more than ____ of the volume when the temperature of the refrigerant is 90F.

  • 75%
  • 100%
  • 90%
  • 80%

22: R-717 is

  • ammonia
  • trichloromethane
  • water
  • carbon dioxide

23: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant

  • does not require a pressure-limiting device
  • shall have a pressure limiting device installed on the high side of the system
  • shall be inspected by the Boiler of Inspectors bi-annually
  • shall have a pressure limiting device and a pressure relief valve installed

24: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.

  • 36
  • 48
  • 24
  • 18

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

  • Stop valve
  • Moisture indicator
  • Muffler
  • Foot valve