ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

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

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

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

3: The Board of Boilers adopts by reference

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

4: Low temperature systems should have what?

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

5: Relief valves are rated in

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

6: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.

  • 8'4"
  • 7.00'
  • 7.25'
  • 9.00'

7: Class 3 refrigerants are

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

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

  • 150
  • 200
  • 330
  • 100

9: Which refrigerant replaced R-12?

  • R-22
  • R-407A
  • R-134A
  • R-410A

10: 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
  • 55
  • 50
  • 15

11: Dual-pressure relief devices should be installed on

  • vessels of 10 cubic feet or less
  • vessels of 3 cubic feet or less
  • vessels of 3 cubic feet or more
  • vessels of 10 cubic feet or more

12: 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

13: Refrigeration devices shall be equipped with a ____ to protect against unexpected pressure due to a malfunction or fire?

  • Temperature limiter device
  • Circuit Breaker
  • Relief valve
  • T&P device

14: A movie theater would be considered a

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

15: How are refrigerant blends classified?

  • Blends don't have to be classified
  • Based on the oil used
  • Based on worst case fractionation
  • Based on best case Fractionation

16: Trichlorofluoromethane is the name of what refrigerant?

  • R-12
  • R-502
  • R-113
  • R-11

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

  • 15'
  • 25'
  • 20'
  • 30'

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

  • 48
  • 18
  • 36
  • 24

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

  • 90%
  • 80%
  • 100%
  • 75%

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

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

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

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

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

  • Magnesium
  • Copper
  • Zinc
  • Nickel

23: High pressure controls should be set no higher than

  • 80% of set point
  • 10% of set point
  • 25% of set point
  • 90% of set point

24: How many groups of refrigerants are there?

  • 5
  • 7
  • 3
  • 1

25: A High-Probablity system

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