Chapter 14 Fire Streams - FOAM


Which of the following statements about the properties of specific application foams is MOST accurate?

Some foams produce a vapor sealing film of surface active water solution of liquid surface

Which of the following statements is MOST accurate?

The application rate varies with the intended fuel and is marked on each foam container

Which proportioning method is the simplest and most accurate method of mixing foam concentrate and water? 740

Batch mixing

Which of the following statements about foam hazards is MOST accurate? 749

The less oxygen required to degrade it, the more environmentally friendly the foam

Which of the following describes foam? 735

Completed product after air is introduced into the foam solution

Which of the following statements about Class B foam is MOST accurate? 736

Class B foam can be used to suppress vapors from unignited spills of combustible liquids

Which of the following describes a foam proportioner? 735

Device that introduces foam concentrate into the water stream to make foam solution

Which of the following is NOT a function of fire fighting foams? 734

Foams can burn quickly, drawing the fire away from other fuel

Foam aerating methods result in varying degrees of expansion that depend on? 736

Method of Aspiration

With the Bank Down foam application method, the foam stream is directed? 747

Onto an object, allowing the foam to run down and onto the surface of the fuel

Which of the following statements about Class A foam is MOST accurate? 736

Class A foam is mildly corrosive

Which of the following statements about portable foam proportioners is MOST accurate? 742

There are two types of portable foam proportioners, in line and foam nozzle eductors

Which of the following statements about apparatus mounted proportioners is MOST accurate? 743

There are three types of apparatus mounted proportioners, installed in line eductors, around the pump proportioners, and balanced pressure proportioners

Air aspirating foam nozzles: 745

Provide maximum expansion of the agent, but less stream reach than standard foam nozzle

Which of the following describes foam concentrate?

Raw foam liquid before the introduction of water and air

Flammable and combustible liquids that mix with water:

Polar solvents

Which of the following describes a way foam extinguisher a fire?

Creates a barrier between fuel and fire

Which of the following statements about fire fighting foam is MOST accurate?

It’s week 6 Baby Face, just like your number!

Which of the following describes a foam solution: 735

Mixture of foam and water before induction  air

Proportioning refers to: 738

The mixing of water with foam concentrate to form a solution

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