ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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”
  • “UM” and “UV”
  • “U” or “UM”
  • “UV”

2: R-11 belongs to Group

  • B-3
  • A-1
  • B-1
  • A-2

3: A movie theater would be considered a

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

4: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code

  • Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
  • over pressure protection as well as a temperature protection device
  • over pressure protection
  • over pressure protection and a rupture disc

5: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.

  • the return air ducted system
  • the outdoors
  • the mechanical room housing the refrigeration system
  • Machinery rooms need not be vented

6: A machine room with a refrigerant system using ammonia shall

  • be provided with a continuously operated ventilation system
  • be considered a non-hazardous location in accordance with National Electrical code
  • have no flame producing apparatus permanently installed and operated
  • All of the above

7: A High-Probablity system

  • is such that any leak will cause injury or death to anyone within a 100 square foot area
  • is a system highly likely to leak from a failed connection or component of such system
  • is such that a leak of refrigerant from failed connections will enter the unoccupied space
  • is such that a leak of refrigerant from failed connections will enter the occupied space

8: 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

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

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

10: R-22 is considered a(n)

  • HCFC
  • CFC
  • HCFCH
  • HFC

11: Field Inspections of refrigeration and A/C systems in Massachusetts shall be made by

  • District Engineering Inspectors
  • Commissioned Inspectors
  • Master licensed Technician
  • both a or b

12: Machinery rooms must be vented to ______?

  • basement
  • neutralizing tank
  • unoccupied spaces
  • outdoors

13: Trichlorofluoromethane is the name of what refrigerant?

  • R-502
  • R-12
  • R-113
  • R-11

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

  • 10
  • 15
  • 24
  • 18

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

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

16: 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
  • public assembly occupancy.
  • mercantile occupancy
  • business occupancy

17: What kind of material can't be used on the outlet of a relief valve?

  • Copper
  • Stainless Steel
  • Aluminum
  • PVC

18: A class B2 refrigerant is considered

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

19: 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

20: 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

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

  • 150
  • 200
  • 330
  • 100

22: The Department that certifies the transportation of refrigerant is the

  • RSES
  • EPO
  • DOT
  • EPA

23: A pressure vessel having an inside diameter of 6” or less shall be sufficient to withstand ____times the pressure of the saturation temperature of the refrigerant or ____times the critical pressure of the refrigerant, whichever is less.

  • 6.6, 6.6
  • 2.5, 3.0
  • 3.0, 3.5
  • 2.5, 2.5

24: 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

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

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