ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • 25'
  • 20'
  • 30'
  • 15'

2: What would be the classification of a prison?

  • Institutional
  • Place of assembly
  • Industrial
  • Large mercantile

3: Fusible plugs must have what marked on them?

  • Melting temperature in F
  • Melting temperature in C
  • Opening pressure
  • All of the above

4: 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"
  • 7.25'
  • 7.00'
  • 9.00'

5: A relief valve discharge capacity is rated in

  • PSIA
  • PSIG
  • temperature minus pounds of air per second divided by release rate squared
  • Pounds of air per minute.

6: What type refrigerant is NOT ozone depleting?

  • Halon
  • HFC
  • HCFC
  • CFC

7: 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

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: R-123 belongs to Group

  • B-1
  • B-3
  • A-3
  • B-2

10: B3 refrigerants are considered

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

11: A Category D fluid

  • is when the fluid handled is non flammable, nontoxic, and not damaging to human as defined in ANSI/ASME Process Piping.
  • is when the design pressure does not exceed 150 psi
  • a fluid for service piping in which the potential for personnel exposure is judged to cause harm and irreversible damage to those persons exposed to it
  • Both a and b are correct

12: Whoever owns/uses a refrigeration or air conditioning system covered by this code

  • must notify the Department of Public Safety prior to starting the system
  • shall be licensed by the Commonwealth of Massachusetts according to CMR 522
  • shall make application for inspections to the Chief of Inspectors
  • None of the above

13: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed

  • 660 lbs
  • 55 lbs
  • 330 lbs.
  • 550 lbs

14: What is a Category "D" fluid?

  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily contact
  • A typical refrigerant used on newer air conditioning and heat pump ssytems
  • A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and design temperature is between -20F to 366F
  • Any fluid that exceeds 150 psig and has design temperature of over 366F

15: Name a CFC refrigerant(s):

  • R-11
  • R-12
  • R-123
  • both a & b

16: _____ and its alloys are suitable for use with ammonia systems.

  • Zinc
  • Aluminum
  • Copper
  • Magnesium

17: All welding done on any refrigeration system or piping covered by 522 CMR 9.00 shall be performed by a according to Section IX of the ASME code

  • welder qualified
  • licensed technician
  • licensed welder
  • competent welder

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

  • 150
  • 200
  • 330
  • 100

19: How many refrigerant classifications are there for toxicity?

  • 5
  • 3
  • 2
  • 1

20: A High-Probability System

  • is a system highly likely to leak form a failed connection or component of such 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

21: R-410A is classified as a ____ refrigerant on the safety matrix.

  • B-1
  • A-1
  • A-2
  • B-2

22: Class A refrigerants are considered

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

23: What is Trichlorotrifluoromethane?

  • R-13
  • R-11
  • R-12
  • R-113

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

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

25: Which occupancy can ammonia be used in?

  • redifential
  • industrial
  • commercial
  • depends on the quantity of freon