- 1 What is a hydrant line?
- 2 What is hydrant in water supply?
- 3 What type of hose is used to deliver water from a hydrant to an engine?
- 4 What is a forward lay in firefighting?
- 5 What does a yellow H sign mean?
- 6 How many PSI is a fire hydrant?
- 7 What are two types of hydrant connections?
- 8 What does a yellow fire hydrant mean?
- 9 Which type of load is most commonly used for Preconnected attack lines?
- 10 Why is it dangerous to work below the hot gas layer without attempting to cool it?
- 11 Can a fire hose kill you?
- 12 What is the difference between a forward lay and reverse lay?
- 13 What is reverse lay?
What is a hydrant line?
A fire hydrant or firecock (archaic) is a connection point by which firefighters can tap into a water supply. It is a component of active fire protection. Underground fire hydrants have been used in Europe and Asia since at least the 18th century. Above-ground pillar-type hydrants are a 19th-century invention.
What is hydrant in water supply?
A fire hydrant is a pipe that allows water to flow from a water main with the control of a valve in order to put out a fire. Fire Hydrant Protection System is designed to fight fire of huge proportions, in all classes of risks. It is designed to be in operation even if a part of the affected structure collapses.
What type of hose is used to deliver water from a hydrant to an engine?
Fire hoses are used as supply hoses and as attack hoses. Supply hoses are used to deliver water from a static source or from a fire hydrant to an attack engine. Fire hoses range in size from 25 to 152 mm (1 to 6 in.). Small-diameter hose (SDH) ranges in size from 25 to 51 mm (1 to 2 in.)
What is a forward lay in firefighting?
Forward hose lay: The laying of a supply line (4 or 2 ½ inch) from a water source (hydrant or tanker dump site) to the scene of the emergency. Such hoseline are carried in the far right trough in the main hose bed of the engine.
What does a yellow H sign mean?
H is for hydrant Yellow H signs are everywhere, and serve a very useful purpose; they point the fire services in the direction of the nearest hydrant. The top number indicates the size of the water main, and the bottom number indicates how far the hydrant is from the sign.
How many PSI is a fire hydrant?
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.
What are two types of hydrant connections?
Fire Hydrants fall within one of two types; wet and dry barrel.
What does a yellow fire hydrant mean?
Yellow body coating being applied to a fire hydrant. The tops of hydrants are painted in colors to indicate how much flow they can produce in gallons per minute (gpm). Blue – over 1,500 gallons per minute (gpm) Green – 1000 to 1,499 gpm. Orange – 500 to 999 gpm.
Which type of load is most commonly used for Preconnected attack lines?
Attack hose is loaded so that it can be quickly and easily deployed. The three most common hose loads used for preconnected attack lines are the minuteman load, the flat load, and the triple-layer load.
Why is it dangerous to work below the hot gas layer without attempting to cool it?
Why is it dangerous to work below the hot gas layer without attempting to cool it? The hotter the gas layer is, the more toxic the fumes are. The smoke contains fuel, and it may ignite at any time. Which is a component of the LCES technique for situational awareness at ground cover fires?
Can a fire hose kill you?
Respiratory burns can kill instantly, or at least as close as makes no difference. Also, structural fires will release toxic gases that can incapacitate and kill just as fast.
What is the difference between a forward lay and reverse lay?
A Forward Lay, which goes from the water source to the fire. A Reverse Lay, which is from the fire back to the water source.
What is reverse lay?
The Reverse Lay is typically used by the second due engine to supply the first due engine with a supply line. The second due engine stops at the scene or the attack engine, drops a supply line off to make connections and then proceeds to the hydrant.