ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

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

2: Low temperature systems should have what?

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

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

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

4: What must be done if refrigeration lines pass through a concrete floor?

  • installed through a pipe casing
  • moisture barrier
  • insulated
  • leak checked

5: A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)

  • commercial occupancy
  • illegal occupancy
  • institutional occupancy
  • public assembly occupancy

6: R-717 is

  • ammonia
  • trichloromethane
  • water
  • carbon dioxide

7: There can be no airflow from an occupied space through a machine room unless what?

  • System is high velocity
  • System is ducted and sealed
  • Duct is not located in the ceiling
  • None of the above.

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

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

9: Before you change the type of refrigerant in a refrigeration system, what three things must be done?

  • you can't change refrigerants
  • nothing must be done
  • place sign, check for leaks, insulate
  • make sure it's compatible, notify owner, notify A.H.J

10: Class A refrigerants are considered

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

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

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

12: How many different groups of refrigerants are there?

  • 7
  • 3
  • 15
  • 11

13: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)

  • Pressure gauge
  • Temperature gauge
  • Sight glass gauge
  • All of the above

14: A class B1 refrigerant is considered

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

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

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

16: pressure relief valves must discharge to the atmosphere at a location not less than 15 feet from ground level and ____ feet from any window, ventilation opening, or exits of buildings.

  • 25
  • 15
  • 20
  • 10

17: R-22 is considered a(n)

  • CFC
  • HFC
  • HCFC
  • HCFCH

18: Machinery rooms must be vented to ______?

  • neutralizing tank
  • basement
  • outdoors
  • unoccupied spaces

19: Each machinery room shall contain

  • smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
  • a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate
  • high and low pressure controls
  • a refrigerant detector located in an area where the refrigerant from a leak will concentrate

20: The main cause of enacting the "no vending rule" of July 1st 1992 was

  • global warming potential
  • ozone depletion
  • both a & b
  • None of the above

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

  • aluminum
  • zinc
  • magnesium
  • all of the above

22: Pressure vessels having an inside diameter of 6” or less shall be protected by

  • a fusible plug
  • a pressure relief device
  • either a fusible plug or a pressure relief device
  • Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified

23: What is the minimum height refrigeration piping should be placed against walls?

  • 72"
  • 6'
  • 7.25'
  • Ceiling height

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

  • Aluminum
  • Stainless Steel
  • Copper
  • Magnesium alloy

25: Name three things that must be done when changing refrigeration lubricant?

  • Place sign, check for leaks, insulate
  • Nothing must be done
  • You can't change lubricants.
  • Make sure it's compatible, notify owner, notify AHJ