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Hand-held foam extinguishers used the same two chemicals in solution. To actuate the extinguisher, a seal was broken and the unit inverted, allowing the liquids to mix and react. Chemical foam is a stable solution of small bubbles containing carbon dioxide with lower density than oil or water, and exhibits persistence for covering flat surfaces.
Dry chemical tank capacities range from 450 to 3,000 pounds (200 to 1,360 kg). AFFF solution capacity ranges from 50 to 250 US gallons (190 to 950 L). Dry chemical flow rates vary from 5 to 8 pounds (2.3 to 3.6 kg) per second and 35 to 60 US gallons (130 to 230 L) per minute for the foam for handline application [citation needed].
Air pressurized water (APW) fire extinguisher A hand held fire extinguisher using water for the extinguishing agent which is expelled by compressed air. Wetting agents may be added to the water and AFFF foam can be used in similar extinguishers. Automatic distress signal unit An alarm device that signals that a firefighter is in trouble.
A stored-pressure fire extinguisher. A fire extinguisher is a handheld active fire protection device usually filled with a dry or wet chemical used to extinguish or control small fires, often in emergencies.
MICROORGANISM TYPE ( Bacterium / Fungus ) FOOD / BEVERAGE Acetobacter aceti: bacterium: chocolate [1]Acetobacter aceti: bacterium: vinegar [2]Acetobacter cerevisiae
The creation of sparks from metals is based on the pyrophoricity of small metal particles, and pyrophoric alloys are made for this purpose. [2] Practical applications include the sparking mechanisms in lighters and various toys, using ferrocerium; starting fires without matches, using a firesteel; the flintlock mechanism in firearms; and spark testing ferrous metals.
Warning sign for fire suppression system Civilian Halon 1301 fire extinguisher, USA, 1980s. Halon 1301 was developed in a joint venture between the U.S. Army and Purdue University in the late 1940's, [5] and became a DuPont product in 1954.
Agriculture, Forestry, Fisheries and Food Business Unit of Japan Finance Corporation in Tokyo, Japan Aqueous film forming foam , or aqueous fire fighting foam Australian Farmers' Fighting Fund , a body providing financial, legal, and professional assistance to farmers in Australia
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