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The user (most likely a fire department) attaches a hose to the fire hydrant, then opens a valve on the hydrant to provide a powerful flow of water, on the order of 350 kilopascals (51 psi); this pressure varies according to region and depends on various factors (including the size and location of the attached water main).
The flow hydrant is fitted with a diffuser device containing a pitot tube that measures stagnation pressure in the middle of the stream while the hydrant is flowing. First, a static pressure gauge is attached to the test hydrant and the static water pressure is measured at the test hydrant. Second, the flow hydrant opened to allow water to flow ...
In fire protection engineering, the K-factor formula is used to calculate the volumetric flow rate from a nozzle. Spray nozzles can for example be fire sprinklers or water mist nozzles, hose reel nozzles, water monitors and deluge fire system nozzles.
Discharge flow: The amount of water flowing from a fire hydrant when it is opened; compare to static flow and residual flow. Determinate: (Response determinate) The level and type of response needed based on information provided by a caller reporting an incident. Often utilizing a structured questioning flow chart or algorithm.
Some fire hydrants in Pacific Palisades ran dry overnight Tuesday due to "extreme demand" and low water pressure, Los Angeles officials said. The Palisades Fire, which was first reported at 10:30 ...
A fire sprinkler system is an active fire protection method, consisting of a water supply system providing adequate pressure and flowrate to a water distribution piping system, to which fire sprinklers are connected. Although initially used only in factories and large commercial buildings, systems for homes and small buildings are now available ...
A short piece of fire hose, usually 10 to 20 feet (6.1 m) long, of large diameter, greater than 2.5 inches (64 mm) and as large as 6 inches (150 mm), used to move water from a fire hydrant to the fire engine, when the fire apparatus is parked close to the hydrant. Solid stream A fire-fighting water stream emitted from a smooth-bore nozzle.
Thieves have stolen about 300 fire hydrants in parts of Los Angeles County, according to the Golden State Water Co. ... A fire hydrant, with a locking device that prevents access to the bolts, at ...
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