ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: System design pressures must take into consideration, not only, pressures found during normal operation but also what?

  • When it's cold out
  • When there is a malfunction on the high side
  • When its warm out
  • All of the above

2: When must refrigeration system covered by the code be inspected?

  • Upon installation
  • Annually and when installed
  • Not required
  • Annually

3: The color code of a tank of ammonia is

  • silver
  • light green
  • lavender
  • white

4: Low temperature systems should have what?

  • High pour point
  • Low pour point
  • High viscosity
  • None of the above

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

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

6: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant

  • shall be inspected by the Boiler of Inspectors bi-annually
  • shall have a pressure limiting device and a pressure relief valve installed
  • shall have a pressure limiting device installed on the high side of the system
  • does not require a pressure-limiting device

7: Halogen refrigerants are corrosive to which type of metal?

  • stainless steel
  • black iron
  • magnesium
  • copper

8: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.

  • 36
  • 18
  • 48
  • 24

9: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere

  • 1,000
  • 330
  • 110
  • 6.6

10: What type of pressure relief device is used on a CO2 system?

  • Rupture disk
  • Fusible plug
  • Gate valve
  • Glove valve

11: Refrigeration piping before being buried shall be

  • leak tested
  • encased in pipe duct
  • pressure tested
  • All of the above

12: Which of the following are considered inorganic refrigerants?

  • R-717 and R-718
  • 410A and R-407C
  • R-500 and R-502
  • None of the above

13: What is not a requirement of a class T machine room?

  • self-closing doors
  • automatic ventilation
  • fire hose connection to the building fire protection system
  • tight fitting doors

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

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

15: 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

16: Liquid level gauges must be provided with what?

  • A low level mark
  • A red line
  • Automatic shut-offs
  • A relief valve

17: What type of relief valve is used on a CO2 system?

  • fusible plug
  • gate valve
  • glove disc
  • rupture disc

18: 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

19: How many different groups of refrigerants are there?

  • 7
  • 3
  • 15
  • 11

20: 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

21: What section governs pressure vessels?

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

22: What is a Category "M" fluid?

  • A typical refrigerant used on newer air conditioning and heat pump systems
  • 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 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

23: Pressure vessel having an inside diameter exceeding 6” with an internal pressure greater than 15psig shall be marked directly on or on the nameplate the letters _______________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • “UL”
  • “UV”
  • “U” or “UM”
  • “UM” and “UV”

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

  • III
  • 15
  • 25
  • 10

25: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 50
  • 22
  • 66
  • 25