How much water to extinguish a fire - Fire Extinguisher Guide

It depends on the type & spread of fire. Sometimes a fire can be put out only by 10 litres of water & while another time 10 lakh litre of water can not douse a fire.

Oil / grease has a burning temperature 2–3 times that of water converting to steam so putting water on a grease fire will result in the water converting to steam instantly. when water converts to steam it expands 1700 times.

How Much Water is Used to Put Out a House Fire?

Firemen have a specific formula they use to determine how much water they may need for a blaze. Some aspects of this formula include, the size of the building, the distance from other buildings, passageways in the building, the number of residents, and more. For large fires, it could take upwards gallons of water to control a blaze.

Also Check: How far will a fire extinguisher spray

How do you calculate how much water you need for fire fighting? The basic formula in the schedule is: NFFi= (Ci)(Oi)(X +P)i Where NFFi = needed fire flow (NFF) in gal per min (L/min) Ci = a construction factor that depends on the construction of the structure under consideration Oi = an occupancy factor that depends on the combustibility of the occupancy (X = P)i = an exposure …

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