Chapter 14 Quiz Flashcards
Device that inject the correct amount of foam concentrate into the water stream to make the foam solution
Foam proportioner
During proportioning foam concentrates are generally intended to be mixed with
Fresh or salt water
Which is an example of the kind of container foam solution can be stored in
Totes, barrels, pails,
Because the product is used in such small percentages it is generally not a significant environmental concern
Class A foam
Foam concentrates of the same type which are manufactured to us miltary specifications may be mixed at any time with no adverse side effects
Mil spec
The ____ is a basic foam proportioner that is designed to be attached directly to the pump panel discharge or connected at some point in the hose lay
In line foam eductor
When using low energy foam systems the aeration and discharge functions are completed by the
Aerating foam nozzle
Large scale flammable and combustible liquid fires often require the delivery of an amount of foam that is beyond the capability of handlines
Lie handlines, fixed flow or automatic fog master stream appliances may be used to deliver foam
The ____ involves directing a foam stream on the ground near the front edge of a burning liquid spill
Roll on method
The. MOST common method of application for above ground storage tank fires
Rain down method
Other additives are currently available or use as extinguishing agents as well as pretreatment of structures threatened by fire spread.
Durable or gelling agents
Foam extinguishes and or suppress vapors by
Separating
Cooling
Suppressing or smothering
Five tactical advantages that compressed foam offers
Reach of the fire stream is considerably longer
Produce small uniform bubbles
Hoselines weigh less
Foam adheres well to burning surface
Provides a safer fire attack
Causes for the production of poor quality foam
Air leaks, clogged proportioning equipment, too long of a hose lay, kinked hose, nozzle placed to far above the eductor, partially closed nozzle,
