The fire trucks above are all spraying two-phase stream. The compound spraying fire truck can spray three- phase stream simultaneously at higher speed including compressed gas, water, and superfine extinguishing powder (Fig. 6).
Do fire trucks shoot water?
The primary function of any pumper/tanker fire engine is to carry water in a water tank or suck water in from an outside source, such as a fire hydrant, drop tank, swimming pool or lake.
How long can a fire truck spray water?
Between 75 feet and 100 feet straight up, depending on water pressure. In practice, though, firefighters on the ground rarely attempt to reach higher than 40 feet with hoses.
How much water can a fire truck spray?
A fire engine is designed to carry 500 gallons of water and pumps water from a hydrant – generally 1,500 gallons per minute.
Do fire trucks stop at red lights?
Every state will have a provision within their highway traffic regulations to allow fire apparatus to proceed through red lights, provided they come to a complete stop first, ensure the way is clear in all directions, and then when it is safe to do so, proceed through the intersection.
Do firefighters use pure water?
When most people think about firefighters extinguishing a fire, most people assume that firefighters always use water. However, water isn’t the only material firefighters use to fight fires. They also use other substances, including foam. Firefighting foam is used instead of water for certain types of fires.
How do fire trucks get water?
Fire hydrants can typically supply a large volume of water. This water is pumped through hoses to the fire truck, where it is pressurized and divided into several streams to supply water to multiple fire hoses at once.
How many miles per gallon does a fire truck get?
Gas powered rigs get about 4 to 12 miles per gallon, and diesel powered rigs get about . 5 to 8 miles per gallon. It may seem rather pathetic, but it’s not, considering all the extra work that fire engines do (pump water, idle, etc.)
Do fire trucks have keys?
Almost all ambulances do have keys, but many have a system that allows you to take the keys out while the engine is still running.
How much PSI does a fire hydrant have?
Fire hydrants are flow-tested at a residual pressure of 20 psi; therefore, firefighters should understand the typical flow rates of fire hydrants at that pressure.
Can you drink water from fire hydrants?
Hydrant flushing is necessary to test the hydrants to make sure adequate flow and pressure is available. Flushing is also done to remove sediment from the pipes in order to maintain water clarity and quality in the distribution pipes. Your water is safe to drink.