ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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
  • 50
  • 55
  • 15

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

  • aluminum
  • zinc
  • magnesium
  • all of the above

3: Each machinery room shall contain

  • a refrigerant detector located in an area where the refrigerant from a leak will concentrate
  • high and low pressure controls
  • 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

4: What section governs pressure vessels?

  • Section 1 ASHREA 15 ASME fired
  • Section 8 ASHREA 15 ASME unfired
  • OSHA
  • Section ASHREA 34

5: Dual-pressure relief devices should be installed on

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

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

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

7: NH3 is

  • R-508A
  • lithium bromide
  • ammonia
  • R-718

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

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

9: 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

10: Halogenated refrigerants cannot be used with what material?

  • Stainless steel
  • Copper
  • Aluminum
  • Magnesium alloy

11: A Low-Probability System

  • is such that a leak of refrigerant from a failed connection can not enter the occupied space
  • is such that a leak of refrigerant from a failed connection will enter the occupied space
  • 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 form a failed connection or component of such system

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

  • Stainless steel
  • Magnesium alloy
  • PVC
  • Copper

13: A professional or office building would be considered what type of occupancy?

  • business
  • public assembly
  • mercantile
  • commercial

14: How many refrigerant classifications are there for flammability?

  • 2
  • 7
  • 1
  • 3

15: No open flames are allowed in the machinery room unless?

  • Approved by the authorized person
  • Approved by the installing contractor
  • Only when combustion air is provided from outside of the machinery room
  • Never can be allowed

16: Class T machine room

  • shall have refrigerant leak detecting systems installed inside and outside the room
  • has no flame producing apparatus permanently installed
  • shall have remote controls to stop the action of the refrigerant compressor
  • shall include closets used for setting equipment

17: How far from the ground does a relief valve need to be?

  • Not more than 3' above grade
  • At least 25' above grade
  • At least 15' above grade
  • At least 20' above grade

18: How much clearance do you need around the perimeter of electrical panels?

  • 36"
  • 24"
  • 18"
  • 12"

19: What type refrigerant is NOT ozone depleting?

  • Halon
  • HFC
  • CFC
  • HCFC

20: Ammonia (NH3) is a group III refrigerant

  • True
  • False

21: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8

  • low side of the system
  • high side of the system
  • the vapor side of the system
  • the liquid side of the system

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

  • EPA
  • EPO
  • RSES
  • DOT

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

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

24: A High-Probability System

  • is such that a leak of refrigerant from a failed connection will enter the occupied space
  • is such that a leak of refrigerant from a failed connection will enter an unoccupied space
  • 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 form a failed connection or component of such system

25: Which refrigerant class listed below is the most flammable?

  • A-3
  • B-2
  • A-1
  • C-3