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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.
The main tank contained a solution of sodium bicarbonate in water, whilst the inner container (somewhat larger than the equivalent in a soda-acid unit) contained a solution of aluminium sulphate. When the solutions were mixed, usually by inverting the unit, the two liquids reacted to create a frothy foam, and carbon dioxide gas.
The larger the burn pan fire, the larger the rating and the longer the extinguisher must discharge to be able to handle the larger volume of fire before running out. For a given size extinguisher the resulting effect is a lower flow rate, resulting in a higher UL rating. Generally for same size extinguishers (agent capacity)
Classes of fire extinguisher and corresponding type of fire they extinguish. Claw tool Early striking and prying tool. Closed-circuit SCBA See SCBA. Closet hook Pike pole under 5 ft long Closet ladder See Attic ladder. CO 2 extinguisher Fire extinguisher that releases carbon dioxide gas to displace oxygen to smother and cool a fire, such as a ...
A sample Hazchem plate for petrol. A tanker carrying Kerosene with a Hazchem plate affixed to the side of the tank.. Hazchem (/ ˈ h æ z k ɛ m /; from hazardous chemicals) [1] is a warning plate system used in Australia, Hong Kong, Malaysia, New Zealand, India and the United Kingdom for vehicles transporting hazardous substances, and on storage facilities.
A standard APW extinguisher in the United States contains 9.5 litres (2.5 US gal) of water in a stainless steel tank. The water is discharged by means of a 13 mm (1 ⁄ 2 in) hose, with a smooth-bore nozzle attached to the tip. They will initially produce a 12–15 m (40–50 ft) stream of water, with a discharge time of about 50 seconds.
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