Wetting agents simply improve the efficiency of water in extinguishing Class A fuel fires. Water to which a wetting agent has been added is sometimes referred to as “wet water” because of its increased ability to wet surfaces to which it is applied.
How are wetting agents used to help fight fires?
Use the term “viscosity” to explain how wetting agents are used to help fight fires. … The wetting agent allows the water to spread out more easily instead of sticking together. Water with reduced cohesion and viscosity spreads out when it hits the trees and ground covering more area than water without a wetting agent.
Why are wetting agents added to water used to extinguish a wildland fire?
Wetting agents or class A foam (foaming agent) increase the effectiveness of water as an extinguishing agent by reducing the surface tension of water.
What is wet water fire fighting?
By simply adding a chemical wetting agent called aerosol to water, we reduce both surface and interfacial tension. In fire fighting, wet water will penetrate into a burning cotton bale and extinguish the fire. It is similarly effective on fires in mattresses and other materials difficult to wet, and on brush fires.
Do firefighters make their water wetter?
TIL firefighters sometimes use “wetting agents” to make water wetter. So, you can make water wetter! I do the same thing in the shower! Not only them, all turf grass specialists use them as well, it’s a surfactant.
Can firemen make water wetter?
Firefighters add a ‘wetting agent’ to make their water even wetter.
How does a wetting agent work?
Wetting agents are like detergents. They overcome that waxing coating and allow water to penetrate into the pore spaces between,” Peter said. “Most potting mixes, if they become dry, will also become water repellent,” he said.
Is Afff Class A or B?
Class B Foam Concentrates are ideal for suppressing fires involving petroleum-based products, LNG, rubber, and flammable and combustible liquids; such as diesel fuel, crude oil gasoline and ethanol.
How much water is used to extinguish a forest fire?
This matters because you need a gallon of water to put out every 3 square feet that’s on fire. By the way, a hose spraying 300 gallons of water a minute can fill about 8 bathtubs at once!
What is firefighter water?
Description. In many firefighting situations, large quantities of water remain after the fire has been extinguished. This firewater contains materials present in the building and also contains dissolved and particulate materials from combustion processes and materials generated through quenching.