ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Evaporators within 18" of a heating coil must be equipped with a

  • high limit control
  • pressure relief device
  • low limit control
  • zone valve

2: A plug containing an alloy that will melt at a specific temperature to relief pressure is a

  • rupture plug
  • fusible plug
  • relief plug
  • fusion plug

3: A class A3 refrigerant is considered

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

4: 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

5: Which refrigerant(s) is an HFC?

  • R-22
  • R-410A
  • R-502
  • All of the above

6: What refrigerant is an inorganic compound?

  • R-132A
  • Ammonia
  • R-410A
  • R-22

7: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.

  • True
  • False

8: pressure relief valves must discharge to the atmosphere at a location not less than 15 feet from ground level and ____ feet from any window, ventilation opening, or exits of buildings.

  • 10
  • 20
  • 15
  • 25

9: Systems containing more than 110 pounds must have stop valves located at the

  • compressor suction inlet
  • compressor discharge outlet
  • receiver inlet and outlet
  • All of the above

10: 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

11: _____ alloys shall not be used in contact with an halogenated refrigerants.

  • Zinc
  • Nickel
  • Copper
  • Magnesium

12: R-12. R-22, and R-40 are considered Group I refrigerants.

  • True
  • False

13: R-718 is rated unlimited for refrigeration quantity contained in a system. Why?

  • Because it's water
  • Because it's cheap
  • R-718 is not rated unlimited because it's a dangerous refrigerant
  • Because it's a non-flammable refrigerant

14: 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

15: How much refrigerant can be stored in a mechanical room outside of the system?

  • 100
  • 330
  • 150
  • 200

16: Name an HCFC refrigerant(s):

  • R-22
  • R-123
  • R-11
  • both a & b

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

  • 22
  • 50
  • 18
  • 33

18: A movie theater would be considered a

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

19: Pressure limiting devices are not required for systems containing less then ________ refrigerants.

  • 22 lbs
  • 44 lbs
  • 6.6 lbs
  • 13.9 lbs

20: How many refrigerant classifications are there for toxicity?

  • 5
  • 2
  • 3
  • 1

21: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8

  • the vapor side of the system
  • low side of the system
  • the liquid side of the system
  • high side of the system

22: When an inspection is needed, how often must it be done?

  • every 36 months
  • every 24 months
  • annually
  • every 18 months

23: Each machinery room shall contain

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

24: 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

25: Ammonia (NH3) is a group III refrigerant

  • True
  • False