ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: A relief valve discharge capacity is rated in

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

2: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.

  • 3
  • 2
  • 1
  • 5

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

  • magnesium
  • stainless steel
  • black iron
  • copper

4: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.

  • 350
  • 250
  • 400
  • 100

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

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

6: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?

  • 1,000
  • 100
  • 100,000
  • 10,000

7: How many refrigerant classifications are there for flammability?

  • 1
  • 3
  • 7
  • 2

8: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.

  • 75
  • 20
  • 15
  • 50

9: The color code of a tank of ammonia is

  • silver
  • lavender
  • white
  • light green

10: How many refrigerant classifications are there for toxicity?

  • 3
  • 2
  • 1
  • 5

11: Liquid shall not occupy more than ____ of the volume when the temperature of the refrigerant is 90F.

  • 90%
  • 100%
  • 80%
  • 75%

12: Who approves containers for refrigerants?

  • D.O.D
  • D.O.T
  • E.P.A
  • D.O.E

13: Who authorizes changes to the safety codes?

  • Person who pulled the permit
  • Contractor who last serviced the system.
  • Board of Boilers
  • Person in charge of the facility

14: How many flammability classifications are refrigerants in?

  • 7
  • 2
  • 3
  • 5

15: Pressure relief valves shall be marked with the data from

  • Section IV Division of the ASME Boiler & Pressure Code
  • Section I Division VIII of ASME Boiler & Pressure Code
  • Section XIII Division of the ASME Boiler & Pressure Code
  • Section VIII Division of the ASME Boiler & Pressure Code

16: B3 refrigerants are considered

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

17: 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

18: What do you need to do when you install a new system?

  • Document the superheat and subcooling reading
  • Insulate the suction line before you take a superheat reading
  • Add refrigerant
  • Have it inspected

19: A machine room with a refrigerant system using ammonia shall

  • be provided with a continuously operated ventilation system
  • be considered a non-hazardous location in accordance with National Electrical code
  • have no flame producing apparatus permanently installed and operated
  • All of the above

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

  • 48
  • 36
  • 18
  • 24

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

  • III
  • 15
  • 10
  • 25

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

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

23: Name a CFC refrigerant(s):

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

24: How are refrigerant blends classified?

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

25: How many CFMs are required per square foot of commercial office occupied space

  • 15 CFM
  • 20 CFM
  • .5 CFM
  • 5 CFM