ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: A High-Probability System

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

2: What would be the classification of a church?

  • Institutional
  • Industrial
  • Large mercantile
  • Place of assembly

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

  • Magnesium alloy
  • Copper
  • Stainless Steel
  • Aluminum

4: Halogenated refrigerants cannot be used with what material?

  • Magnesium alloy
  • Stainless steel
  • Copper
  • Aluminum

5: When should a relief valve start to function?

  • Before the purge station discharges
  • Two times it's working pressure
  • At it's set pressure
  • 10 psi before it's set pressure

6: 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

7: Defined process piping by code CMR (528)

  • Any piping that conveys a solid, liquid or gas that is not part of the plumbing or fire protection system
  • Any piping in an industrial space
  • Any piping in an industrial or commercial space
  • All of the above

8: Fusible plugs shall not be used with pressure vessels of

  • 3 cubic feet or less
  • 15 square feet or less
  • 3 cubic feet or more
  • 15 cubic feet or more

9: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.

  • 90%
  • 80%
  • 99%
  • 75%

10: Can a R22 line set be reused for a 410A system and if it can be reused, what must be done to it?

  • Flush with R-718
  • Flush with R-11
  • Flush with ammonia
  • Flush with RX-11

11: 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

12: Refrigerant restricted in 2004 but used for transition for decades:

  • R-11
  • R-22
  • R-134A
  • R-123

13: When systems are protected by a high pressure relief device, the compressor's pressure limiting device shall be set at or below ____ % of the operating pressure of the high side relief device.

  • 100
  • 80
  • 110
  • 90

14: What does safe access mean?

  • OSHA approved
  • Well-lit exit signs
  • Locked doors
  • A clear unobstructed path to the equipment and controls

15: What refrigerant were phased out in 2004?

  • R-134a
  • R-12
  • R-22
  • R-11

16: 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

17: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.

  • True
  • False

18: What pipe can not be used for refrigeration?

  • M
  • N
  • K
  • L

19: What happens after your initial inspection of a pressure vessel?

  • Notify the AHJ to let them know that the system been inspected
  • Notify the Fire Marshal that the system has been inspected and approved
  • Inspector leaves a metal tag with a certification listed on it
  • There is a temporary shut-down until a final inspection can be performed.

20: 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

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

  • over pressure protection
  • 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 and a rupture disc

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

  • business
  • mercantile
  • commercial
  • public assembly

23: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.

  • ammonia
  • HCFC-123
  • Lithium bromide
  • CFC-11

24: Single compound Refrigerants are classified by what two criteria?

  • Weight and color
  • Flammability and temperature range
  • Temperature range and hazardousness
  • Flammability and toxicity

25: What must be done to all doors and access points in duct work going through a mechanical room?

  • Must be hindged
  • Must be screwed shut
  • Must be sealed and gasketed
  • All of the above