ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What refrigerant were phased out in 2004?

  • R-12
  • R-11
  • R-134a
  • R-22

2: When must refrigeration system covered by the code be inspected?

  • Annually
  • Upon installation
  • Annually and when installed
  • Not required

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

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

4: 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

5: Institutional occupancy is

  • a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • None of the above

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

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

7: R-22 is considered a(n)

  • HFC
  • HCFC
  • HCFCH
  • CFC

8: Doors communicating with outside from a mechanical room must be?

  • Self-closing, aligned, fire door
  • Self-closing, wooden, fire door
  • Steel, approved, weather-stripped
  • Self-closing, approved, fire door

9: When should a relief valve start to function?

  • 10 psi before it's set pressure
  • At it's set pressure
  • Two times it's working pressure
  • Before the purge station discharges

10: 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

11: 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

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

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

13: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.

  • True
  • False

14: What pipe can not be used for refrigeration?

  • K
  • M
  • N
  • L

15: Pressure relief valves shall be marked with the data from

  • Section IV Division of the ASME Boiler & Pressure Code
  • Section VIII Division of the ASME Boiler & Pressure Code
  • Section XIII Division of the ASME Boiler & Pressure Code
  • Section I Division VIII of ASME Boiler & Pressure Code

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

  • 30'
  • 20'
  • 15'
  • 25'

17: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.

  • 75
  • 15
  • 55
  • 50

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

  • aluminum
  • zinc
  • magnesium
  • all of the above

19: What must be done to refrigerant pipes before being buried?

  • Encased
  • Leaked checked
  • Coated
  • Certified

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

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

21: A class B1 refrigerant is considered

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

22: Pressure vessel having an inside diameter exceeding 6” with an internal pressure greater than 15psig shall be marked directly on or on the nameplate the letters _______________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • “UL”
  • “U” or “UM”
  • “UM” and “UV”
  • “UV”

23: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.

  • 24
  • 15
  • 18
  • 10

24: Which refrigerant(s) is an HFC?

  • R-22
  • R-410A
  • R-502
  • All of the above

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

  • True
  • False