ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Industrial occupancy is

  • a premise or that portion of a premise that is not open to the public, where access by authorized persons is controlled, and that is used to manufacture, process, or store goods, such as chemicals, food, ice, meat, or petroleum.
  • is a premise or that portion of a premise where large number of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • Both a and b are correct

2: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.

  • True
  • False

3: Ammonia (NH3) is a group III refrigerant

  • True
  • False

4: When is the only time you can leave a service container attached to a system?

  • Leaking system
  • Recovery
  • Charging
  • Both b and c

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

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

6: How far from the ground does a relief valve need to be?

  • Not more than 3' above grade
  • At least 25' above grade
  • At least 20' above grade
  • At least 15' above grade

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: B3 refrigerants are considered

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

9: 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

10: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.

  • 80%
  • 90%
  • 99%
  • 75%

11: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.

  • the atmosphere
  • a de-pressurized recovery tank with a silver top and yellow bottom
  • a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
  • All of the above

12: Halogenated refrigerants cannot be used with what material?

  • Stainless steel
  • Magnesium alloy
  • Copper
  • Aluminum

13: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.

  • 75
  • 15
  • 50
  • 55

14: Which refrigerant class listed below is the most flammable?

  • B2
  • A3
  • A2
  • C3

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

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

16: 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
  • commercial occupancy
  • institutional occupancy
  • public assembly occupancy

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

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

18: 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

19: What must be done to refrigerant pipes before being buried?

  • Encased
  • Certified
  • Coated
  • Leaked checked

20: Each machinery room shall contain

  • smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
  • high and low pressure controls
  • a refrigerant detector located in an area where the refrigerant from a leak will concentrate
  • a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate

21: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?

  • fusible plug
  • relief valve
  • rupture disc
  • all of the above

22: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.

  • 100
  • 350
  • 50
  • 550

23: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

24: Fusible plugs must have what marked on them?

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

25: Institutional occupancy is

  • a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • None of the above