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Love our channel? Help us save and post more orphaned films! Support us on Patreon: / periscopefilm Even a really tiny contribution can make a difference. Consider becoming a channel member • Help us preserve more films -- become a ME... "The Fire Triangle" presents different types of fires (electrical, chemical, etc.) and firefighting techniques, while exploring the "triangle" conception of fire, consisting of heat, fuel and oxygen. Shot in Los Angeles with the cooperation of the LAFD, it dates to 1962. The film opens with scenes of firemen working to put out a fire on a rooftop (:07) as well as fire ambulances running down a main drag in a city area (:10). Main titles (:37). A firefighter uses a hose to put out a burning building (:44). Large smoke clouds are seen in the background as two firemen prepare to fight the flames (:56). The film shows the various methods of how fires are put out (1:04) by a large city fire department. (The station shown at 1:30 is Station 30, which now houses the Los Angeles Fire Department Museum) Within the fire department laboratory technicians learn the principles of fire control (1:17). The three factors which contribute to a fire starting are pointed to as a combustible object; or a fuel (1:29), heat (1:36) and gas (1:52). A glass cylinder is set over the burning ball of paper to show how a lack of oxygen puts out the fire (1:58). When these three ingredients are set together; this is what the film refers to as the ‘fire triangle’ (2:23). Various types of fuels are pointed out (2:37). Various fuels are heated with an electric coil or bunsen burner (2:59). An instrument is pointed to which will dictate the temperature of the coil (3:06). As the temperature of the oil rises over 900 degrees; it begins to burn (4:02). The film turns to show a scene of a burning building (4:49). In order to put out a fire, the fire fighters must remove one of the three elements contributing to the fire (5:16). The film asks what must be done in order to fight a forest or brush fire, also known as a wildfire (5:19). In this instance, the fuel can be removed as men hack away at dry timber and shrubs (5:24) which are in the path of the fire. A bulldozer is introduced to the effort to clear away the brush (6:00). In another scene of a fire moving through a small town, the firemen work to remove the heat (6:06) with water hoses. Aerial footage from the roof show firefighters working to put out the flames as another fire truck pulls up to assist (6:28). The third method for controlling a fire is to remove the oxygen (6:53). A fire extinguisher is zoomed in on to show the main ingredient of carbon dioxide (7:06). At a laboratory, the extinguisher is tested to show how it works (7:18). Carbon dioxide; which is heavier than air is poured from a beaker over a flame (7:34). The flames are put out (7:41). Oxygen removal is helpful in oil or gasoline fires as well (8:14). When the fire fighter tries to put out the flame with water it only adds to the flame (8:19). Airport firemen roll up to a B-47 bomber plane, which has been set on fire as part of a drill (8:55) spraying a chemical foam (9:03). The foam smothers the fire (9:12). An electrical fire also requires special techniques to put out (9:57). A demonstration follows showing why the use of water on an electrical fire is dangerous (10:19). The water still acts as a conductor (10:29). A fireman is shown shutting off the electricity in a building which is the first step in fighting electrical fires (10:43). A chemical is sprayed in order to remove the oxygen (10:54). The film wraps up as it goes over the three elements which are used to fight fire (11:41). This film was distributed by the Film Associates of California (12:44). We encourage viewers to add comments and, especially, to provide additional information about our videos by adding a comment! See something interesting? Tell people what it is and what they can see by writing something for example: "01:00:12:00 -- President Roosevelt is seen meeting with Winston Churchill at the Quebec Conference." This film is part of the Periscope Film LLC archive, one of the largest historic military, transportation, and aviation stock footage collections in the USA. Entirely film backed, this material is available for licensing in 24p HD, 2k and 4k. For more information visit http://www.PeriscopeFilm.com