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Suppression mode sprinklers, also known as Early Suppression Fast Response sprinklers, are intended to result in a severe sudden reduction of the heat release rate of the fire, prior to manual intervention. Control mode sprinkler systems are designed using an area and density approach.
The building was equipped with a sprinkler system, but had many single-point vulnerabilities for failure: the sprinkler system required manual initiation of the electrical fire pumps, rather than being a fully automatic system; the floor-level controls had a single connection to the sprinkler water riser; and the sprinkler system required some ...
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Pump-Type water extinguisher typically consist of a 2-1/2 or 5-gallon non-pressurized metal or plastic container with a pump mounted to it, as well as a discharge hose and nozzle. Pump type water extinguishers are often used where freezing conditions may occur, as they can be economically freeze-protected with calcium chloride (except stainless ...
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Sear shown in a revolver action Sear (B), in a rifle. In a firearm, the sear is the part of the trigger mechanism that holds the hammer, striker, or bolt back until the correct amount of pressure has been applied to the trigger, at which point the hammer, striker, or bolt is released to discharge the weapon.