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18 Cards in this Set

  • Front
  • Back
what type of foam concentrate storage is used to transport additonal foam concentrate to the ARFF apparatus at a emergency scene?
foam tenders
what type of foam concentrate storage is integrated into an on-board foam proportioning system of an ARFF apparatus providing the most desirable situation?
apparatus tanks
what is the shelf life of protein-based CLASS B foam concentrates?
10 years
dry chemical agents are not compatible with what type of foam?
protein foam (PF)
what are the two types of dry-chemical fire extinguishers?
1)regulas B:C rated
2)multi-purpose A:B:C rated
why must you not use the multi-purpose extinguisher on engine fires?
because the agents are extremely corrosive to metals
what are the two designs of dry chemical fire extinguishers?
1)stored pressure
2)cartridge operated
what auxiliary agent may be used for equipment such as computers and electronic components?
what auxiliary agent is non-conductive and be used on CLASS A,B,or C fires and is not your best bet for sensitive equipment because of its corrosive nature?
dry chemical
what auxiliary agent is not effective on "self-oxidizing" materials?
what are the four basic foam proportioning methods?
3)batch mixing
what are the three types of auxiliary agents?
1)dry chemical
2)dry powder
3)halogenated agent
how does injection proportioning works?
uses an external pump or head pressure to force foam concentrate into the water stream
how does the induction proportioning system works?
uses an eductor to increase the water pressure of the fire stream which creates a suction that pulls the foam concentrate into the fire stream
CLASS A foam concentrates typically should be mixed in proportions of what?
0.1% to 3.0%
CLASS B foam concentrates should be mixed in proportions of what?
1% to 6%
CLASS A foam concentrates should be used on what type of fires only?
CLASS B foam concentrates should be used to extinguish what type of fires?
1)fuel fires
2)flammable liquid spills
3)suppress vapors from combustible