What factor makes water such an excellent firefighting agent?

Why is water good for fighting fires?

There are a few different methods for extinguishing fires. Water puts out fire by cooling (reducing heat) and smothering (cutting off oxygen).

What makes water an excellent substance for extinguishing fire?

Water doesn't catch fire because it can't burn anymore. Burning in our atmosphere is a reaction with oxygen, and in water hydrogen and oxygen have already burned. … The reason water extinguishes flames is because it is exceptionally good at absorbing heat.

What is the importance of water in firefighting Brainly?

Answer: Water obsorbs the heat and act as a barrier between the burning object and the oxygen of the air. Without oxygen fire cannot burn so water is used to extinguish fire. Water is not used to extinguish petrol or oil or electrical fire.

What is the main cause of influence of fire *?

SOIL HEATING, TEMPERATURE, AND TRANSFER. Rate of burning and heat output for surface and crown fires are influenced by fuel load, fuel moisture, topography, ignition method, air temperature, wind, and relative humidity.

How is water used in firefighting?

Fire services use the hydrant for a continuous flow of water which is vital to firefighting operations. A fire truck carries only enough water to make an initial fire attack. In the first minutes of a fire emergency a continuous water supply from the water mains must be accessed through at a hydrant.

What type of water do firemen use?

A Cal Fire spokesperson told SFGATE that there are several sources of water that fire crews can draw from: municipal water sources at Cal Fire facilities, fire hydrants out in the field, lakes, ponds and even residential swimming pools.

What is in water that puts out fire?

Oxidized hydrogen, AKA dihydrogen monoxide, AKA “water” in the form of water vapor (gaseous water). This actually gives us a clue as to WHY water puts out fire.

How does water help extinguish fire class 8?

Water brings down the temperature of the combustible substance below its ignition temperature. The water vapour surrounds the combustible material, thus helping in cutting off the supply of air. So, that the fire is extinguished. … 8 Are can be extinguished by using fire extinguisher properly.

What extinguishing agent increases the effectiveness of water by reducing its surface tension?

NFPA-18, Standard on Wetting Agents defines a wetting agent as a concentrate that when added to water reduces its surface tension and increases its ability to penetrate and spread, extending the efficiency of water and the extinguishment of Class A and Class B fires in ordinary combustibles and flammable or combustible …

What factors affect fire?

Three major factors typically influence fire behaviour: weather, fuels and topography.

What are the 7 factors that affect fire development?

Interior finish in a room, fuel continuity, feedback, material ignitability, thermal inertia of the fuel, proximity of flames to walls are the major factors that influence fire growth.

What are the three main means of moving water used by firefighters?

Most firefighters understand that there are three types of water mains: primary feeders, secondary feeders and distributors. Primary feeders are large pipes that transport large quantities of water from the pumping station to the distribution system.

How much water is in a fire brigade?

2. It is recommended that generally for towns/cities, water for fire fighting shall be provided at the scale of 1800-l/min for every 50 000 population or part thereof for towns up to 3 lacs population and an additional 1800-l/min for every 1 lac population of more than 3 lacs.

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