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QuickTrain CrewReview. QuickTrain CrewReview trainings have been developed to serve as brief springboards for crews to discuss emergency response theory.

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Presentation on theme: "QuickTrain CrewReview. QuickTrain CrewReview trainings have been developed to serve as brief springboards for crews to discuss emergency response theory."— Presentation transcript:

1 QuickTrain CrewReview

2 QuickTrain CrewReview trainings have been developed to serve as brief springboards for crews to discuss emergency response theory and implement hands-on training as it best fits into each crew’s daily schedules and incident response.

3  An aqueous solution which is lower in density than flammable liquids  Used principally to form a cohesive floating blanket on flammable and  combustible liquids  Prevents or extinguishes fire by excluding air and cooling the fuel  Prevents reignition by suppressing formation of flammable vapors  Adheres to surfaces to provide increased exposure protection from adjacent fires

4 AIR++AGITATION+ Remember foam percentages and proportioning systems. Typically for hydrocarbons, foam is proportioned at 3% For polar solvents, foam is usually proportioned at 6% Some foams work at much lower concentrations, e.g. 1%. Proportioning Methods Include line eductors self-educting nozzles pressure systems pump proportioning systems

5  Protein foam: produced by the hydrolysis of protein material such as animal hoof and horn.  Fluoroprotein foam: formed by the addition to protein foam of special surfactants that reduce the surface tension of allow more fluid movement.  Aqueous Film-Forming Foam (AFFF): synthetic foaming agents added to surfactants  Film-Forming Fluoroprotein Foam (FFFP): protein-based foam with fluorochemical surfactants  Alcohol-Resistant (AR): combination of synthetic stabilizers, foaming agents, fluorochemicals, and synthetic polymers; designed for use on polar solvents

6  To cover horizontal surfaces so water remains in contact with hot surfaces longer and absorbs more heat  To flow over a burning liquid surface and form a blanket sealing volatile combustible vapors ambient air.  To provide visual confirmation that a fuel surface has been covered in situations where a fire has been extinguished or ignition has not occurred.  To pre-treat structures for protection against impending wildland fires or to guard exposures from nearby fires WHEN IS FOAM INEFFECTIVE?  When fighting class C/D fires  Against three-dimensional Class B fires  Against leaking, pressurized gases “A three-dimensional class B fire involves Class B materials in motion such as pouring, running, or dripping flammable liquids, and generally includes vertical as well as one or more horizontal surfaces.” Adapted from NFPA 10

7 Proper application is critical for foam. Apply the foam as gently as possible to minimize agitation of fuel and creation of additional vapors. The most important thing to remember: never plunge foam stream directly into the fuel. This will agitate fuel and create additional vapors. bounce-offbank-inrain-down

8 QuickTrain CrewReview


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