ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: The 522 CMR 9.00 has adopted for reference ASHRAE ____

  • 10
  • 15
  • 25
  • III

2: All serviceable components of a refrigeration system shall be provided with

  • service manuals
  • name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
  • safe access
  • manufactures instructions on start-up procedures

3: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?

  • When its white
  • When there is a space 6' or more above it
  • When it's used as part of a supply or return air system
  • When there are sprinklers above

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

  • over pressure protection
  • over pressure protection and a rupture disc
  • 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

5: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

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

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

7: What is the minimum size of the discharge pipe?

  • Same size as the outlet of the relief valve
  • One pipe size larger that the inlet of the relief valve
  • Depends on size of manifold
  • All of the above

8: 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

9: R-22 falls under which safety classification?

  • A-1
  • A-2
  • B-2
  • B-1

10: When a refrigerating machinery room is used, the emergency procedures shall be posted

  • on a conspicuous card located near the evaporator
  • inside the room, immediately adjacent to each door
  • on a conspicuous card located near the compressor
  • outside the room, immediately adjacent to each door

11: What refrigerant doesn't have to be classifted?

  • R-134a
  • R-711
  • R-718
  • R-717

12: 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

13: What type refrigerant is NOT ozone depleting?

  • HCFC
  • Halon
  • HFC
  • CFC

14: 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
  • Any fluid that exceeds 150 psig and has design temperatures over 366F
  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily content
  • A typical refrigerant used on newer air conditioning and heat pump systems

15: The main cause of enacting the "no vending rule" of July 1st 1992 was

  • global warming potential
  • ozone depletion
  • both a & b
  • None of the above

16: Ammonia (NH3) is a group III refrigerant

  • True
  • False

17: How are refrigerant blends classified?

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

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

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

19: A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)

  • illegal occupancy
  • public assembly occupancy
  • commercial occupancy
  • institutional occupancy

20: 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-11
  • Flush with RX-11
  • Flush with ammonia
  • Flush with R-718

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

  • Copper
  • Magnesium
  • Aluminum
  • Zinc

22: What would be the classification for Stop & Shop grocery store?

  • Industrial
  • Large mercantile
  • Instituional
  • Place of assembly

23: The dial of a pressure gauge, when installed on the high side of a system be graduated 1.2 times the designed pressure.

  • True
  • False

24: Large vessels containing refrigerant ______________________ from using two or more pressure-relief devices in parallel to obtain the required capacity.

  • shall be prohibited
  • containing R-11, R-123 & R-717 exclusively shall not be prohibited
  • of Group B2 refrigerant shall be prohibited
  • shall not be prohibited

25: NH3 is

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