ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What is a Category "M" fluid?

  • A typical refrigerant used on newer air conditioning and heat pump systems
  • Any fluid that exceeds 150 psig and has design temperatures over 366F
  • 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

2: What is a Category "D" fluid?

  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily contact
  • Any fluid that exceeds 150 psig and has design temperature of over 366F
  • A typical refrigerant used on newer air conditioning and heat pump ssytems
  • A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and design temperature is between -20F to 366F

3: Before you change the type of refrigerant in a refrigeration system, what three things must be done?

  • nothing must be done
  • place sign, check for leaks, insulate
  • make sure it's compatible, notify owner, notify A.H.J
  • you can't change refrigerants

4: What is R-22?

  • CCFCM
  • HFC
  • Chlorodifluoromethane
  • Chlorofluoromethane

5: 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

6: Where a refrigeration or air conditioning system is installed,

  • The company who installed the system must notify the fire department in the jurisdiction where installed
  • it shall not be operated below prescribed pressuers
  • A field inspection shall be made before it is put into service
  • the form or certificate shall be authorized by the Department of Public Safety

7: Who approves containers for refrigerants?

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

8: A class B1 refrigerant is considered

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

9: R-22 is classified as a ____ refrigerant on the safety matrix.

  • A-1
  • A-2
  • B-2
  • B-1

10: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.

  • 1
  • 1.2
  • 2.2
  • 1.5

11: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

12: R-22 is considered a(n)

  • CFC
  • HFC
  • HCFC
  • HCFCH

13: Pressure vessels nameplate markings must be compliant with the

  • ASHRAE 34 Standards
  • CMR-588 & CMR-528
  • ASME Boiler and Pressure Vessel Code
  • All of the Above

14: Can ammonia be used on domestic system?

  • yes
  • no, unless there is proper ventilation system installed
  • yes, for systems under 10 tons
  • no

15: Name three things that must be done when changing refrigeration lubricant?

  • Place sign, check for leaks, insulate
  • Nothing must be done
  • Make sure it's compatible, notify owner, notify AHJ
  • You can't change lubricants.

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

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

17: What does safe access mean?

  • Well-lit exit signs
  • OSHA approved
  • A clear unobstructed path to the equipment and controls
  • Locked doors

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

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

19: A High-Probability System

  • is a system highly likely to leak form a failed connection or component of such system
  • is such that any leak will cause injury or death to anyone within a 100 square foot area
  • is such that a leak of refrigerant from a failed connection will enter an unoccupied space
  • is such that a leak of refrigerant from a failed connection will enter the occupied space

20: How are refrigerant blends classified?

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

21: What section of ASHRAE-15 governs pressure vessels?

  • OSHA
  • Section 6 ASHRAE-34 ASME VIII unfired
  • Section 7 ASHRAE-15 ASME VIII fired
  • Section 9 ASHRAE-15 ASME VIII unfired

22: 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

23: Methyl Chloride is a halogenated refrigerant and should not come in contact with

  • aluminum
  • zinc
  • magnesium
  • all of the above

24: Which of the following is an inorganic refrigerant?

  • R-22
  • Ammonia
  • Chlorofluorocarbons
  • All of the above

25: What refrigerant is an inorganic compound?

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