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Bromochlorodifluoromethane (BCF), also referred to by the code numbers Halon 1211 and Freon 12B1, is a haloalkane with the chemical formula C F 2 Cl Br. It is used for fire suppression, especially for expensive equipment or items that could be damaged by the residue from other types of extinguishers. [ 1 ]
The 42 lb. hose is a standard 100 ft., 1.75 in. thick. hose. The stairwell consists of six sets of stairs, each with ten steps. The firefighter must carry the hose up the stairs and place it in a container box on the top story of the stairwell. The hose may not touch the ground at any point before the firefighter places it in the container box. [5]
At its annual convention at Dallas, TX, the NFPA formally adopted a standard with 2 + 1 ⁄ 2-inch hose with 7.5 threads per inch as the primary standard, with additional sizes of 3 and 3.5 inches (each with 6 threads per inch) and a 4.5 inch coupling with 4 threads per inch, with the fire hydrant standard specifying one 4.5 inch port and two 2 ...
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Indoor fire hose with a fire extinguisher. A fire hose (or firehose) is a high-pressure hose that carries water or other fire retardant (such as foam) to a fire to extinguish it. Outdoors, it attaches either to a fire engine, fire hydrant, or a portable fire pump. [ 1] Indoors, it can permanently attach to a building's standpipe or plumbing system.
That’s certainly the case with celebrity chef Bobby Flay, who recommends a tool originally developed for woodworkers to add citrus, ginger, spices, and other zesty touches to his recipes. The ...
Divers uncovered a 3,000-year-old clay figurine in Italy's Lake Bolsena, revealing human fingerprints and shedding light on Iron Age rituals. Discover the story.
In each case, the hard suction hose connection will match the fittings of the pump intake and supply hose, so that hard suction hose can be used in place of supply hose as appropriate. It is short. Typically, suction hose comes in 10 feet (3.0 m) lengths, while fire hose comes in 50 and 100 feet (15 and 30 m) lengths. [12]
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