ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

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

2: Which of the following are considered inorganic refrigerants?

  • R-717 and R-718
  • 410A and R-407C
  • R-500 and R-502
  • None of the above

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

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

4: A positive displacement compressor is

  • a compressor in which the increase in pressure is attained by changing the internal volume of the compression chamber
  • a compressor in which the increase in pressure is attained by changing the internal pressure of the compression chamber
  • is a reciprocating type compressor with 2 or more pistons
  • where the compressor's suction pressure and the compressor;s discharge pressure is more than 50 PSI

5: How many different groups of refrigerants are there?

  • 3
  • 11
  • 15
  • 7

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

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

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

  • 48
  • 24
  • 18
  • 36

8: R-22 falls under which safety classification?

  • A-1
  • B-1
  • B-2
  • A-2

9: The Board of Boilers adopts by reference

  • the MACS Pressure Vessel Code of Massachusetts
  • MSCA Code
  • Montreal Protocol Safety Code
  • the 1997 ANSI/ASHRAE Safety Code

10: Relief valves are rated in

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

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

  • aluminum
  • zinc
  • magnesium
  • all of the above

12: A 3-cubic foot receiver must have what type of relief valve?

  • fusible plug
  • relief valve
  • rupture device
  • none of the above

13: 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

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

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

15: Where are the three places that the discharge from an ammonia relief valve be piped?

  • To chemical neutralizing tank only
  • Underground, into drain, into mechanical room
  • Atmosphere, Tank containing water, where the AHJ indicates.
  • None of the above.

16: 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

17: A relief valve discharge capacity is rated in

  • PSIG
  • temperature minus pounds of air per second divided by release rate squared
  • PSIA
  • Pounds of air per minute.

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

  • 75%
  • 90%
  • 80%
  • 100%

19: How far from the window does a relief valve need to be according to ASHRAE-15?

  • At least 30'
  • There is no minimum for relief valve and windows.
  • At least 40'
  • At least 20'

20: Low temperature systems should have what?

  • High pour point
  • Low pour point
  • High viscosity
  • None of the above

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

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

22: 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

23: Name an HCFC refrigerant(s):

  • R-22
  • R-123
  • R-11
  • both a & b

24: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • UM or UL
  • UV or UR
  • UL and UM
  • UL and UR

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

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