ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

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

2: What pipe can not be used for refrigeration?

  • K
  • M
  • N
  • L

3: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 22
  • 18
  • 50
  • 33

4: A positive displacement compressor is

  • a compressor in which the increase in pressure is attained by changing the internal volume of the compression chamber
  • a compressor in which the increase in pressure is attained by changing the internal pressure of the compression chamber
  • is a reciprocating type compressor with 2 or more pistons
  • where the compressor's suction pressure and the compressor;s discharge pressure is more than 50 PSI

5: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.

  • low pressure
  • critical pressure
  • design pressure
  • high pressure

6: What does safe access mean?

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

7: When should a relief valve start to function?

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

8: What is a Category "M" fluid?

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

9: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into

  • the low-pressure side of the system
  • the high side of the system
  • the liquid receiver
  • both a and c are correct

10: Which occupancy can ammonia be used in?

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

11: Ammonia is under what safety classification?

  • A3
  • B2
  • B1
  • B3

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

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

13: Which of the following is an inorganic refrigerant?

  • R-22
  • Ammonia
  • Chlorofluorocarbons
  • All of the above

14: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered

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

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

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

16: What is not a requirement of a Class T machine room?

  • Tight fitting doors
  • Fire hose connected to the building fire protection system.
  • Self-closing doors
  • Automatic ventilation

17: Name a CFC refrigerant(s):

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

18: The Board of Boilers adopts by reference

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

19: Pressure vessels nameplate markings must be compliant with the

  • ASHRAE 34 Standards
  • CMR-588 & CMR-528
  • ASME Boiler and Pressure Vessel Code
  • All of the Above

20: What is an example of institutional occupancy?

  • Dorms
  • Hospital
  • Shopping mall
  • Football stadium

21: The discharge relief valve is located (9.4.6)

  • on top of the condensor
  • between the compressor and the stop valve
  • between the compressor and oil separator
  • between the compressor and reciever

22: Where a refrigeration or air conditioning system is installed,

  • The company who installed the system must notify the fire department in the jurisdiction where installed
  • A field inspection shall be made before it is put into service
  • it shall not be operated below prescribed pressuers
  • the form or certificate shall be authorized by the Department of Public Safety

23: R-717 is

  • ammonia
  • trichloromethane
  • carbon dioxide
  • water

24: A declaration test is needed when the system contains more than

  • 110 lbs
  • 120 lbs
  • 65 lbs
  • 55 lbs

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

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