ARFF - DRIVER OPERATOR - CHALLENGE REVIEW QUESTIONS WITH VERIFIED ANSWER

ARFF - DRIVER OPERATOR - CHALLENGE REVIEW
QUESTIONS WITH VERIFIED ANSWER



Dry chemicals can only be used on - ans-A. Class A fires
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B. Class A, B, C fires - Correct Answer
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C. Class C and D fires
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D. Class D fires
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Identify TWO TRUE statements about auxiliary agents - ans-
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A. They should never be used directly with primary agents
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B. They must be compatible with primary agents
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C. They can be used interchangeably
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D. They must be used on the specific class of fire for which they are rated
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E. They cannot be used on combustible liquids and vapors
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Raw Liquid foam that is stored in containers until it is mixed with water and air is called: -
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ans-A. Foam concentrate - Correct Answer
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B. Synthetic foam
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C. Foam crystals
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D. Condensed Foam
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Class A foams and class B synthetic based foam concentrations have a shelf life of: - ans-
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A. 1 to 5 years
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B. 6 to 10 years
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C. 11 to 20 years
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D 20 to 25 years - Correct Answer
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, Identify TWO laws that apply to water and its ability to absorb heat and turn a liquid into a va
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por - ans-A. First Law of Thermodynamics
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B. Law of Specific Heat
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C. Law of Entropy
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D. Law of Latent Heat of Vaporization
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E. Newton's Law of Static and Dynamic Forces
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Sparks from friction or electrical components can increase the ________ of a fuel spill. -
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ans-A. Length
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B. Duration
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C. Probability of ignition - Correct Answer
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D. Spread ratio
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All of the following are primary uses of water in ARFF operations EXCEPT: - ans-
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A. Extinguishing fuels spills and fuel fires - Correct Answer
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B. Cooling down the fuselage so that it does not ignite spilled fuel
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C. Forcing a fuel spill or fuel fire away from an aircraft
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D. Extinguishing Class A fires that are found in the interior of aircraft
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Halogenated agents do NOT work on: - ans-A. Sensitive equipment such as computers
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B. Electrical components
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C. Self-oxidizing materials - Correct Answer
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D. Aircraft engine fires
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Identify THREE characteristics of fuel spills that require blanketing with foam to prevent the
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release of flammable vapors. - ans-A. More than one inch in depth
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B. More than 10 feet in any direction
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C. Continuous
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D. 25 square feet in area
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