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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)
EN 3-5: Portable fire extinguishers. Specification and supplementary tests. EN 3-6: Portable fire extinguishers. Provisions for the attestation of conformity of portable fire extinguishers in accordance with EN 3-1 to 3-5. Amendment 1; EN 3-7: Portable fire extinguishers. Characteristics, performance requirements and test methods.
Under NFPA 10 all commercial vehicles must carry at least one fire extinguisher, with size/UL rating depending on type of vehicle and cargo (i.e., fuel tankers usually must have a 20 lb (9.1 kg), while most others can carry a 5 lb (2.3 kg)).
Dry chemical powder is used on all classes of fires. Dry chemical powder puts out the fire by coating the burning material with a thin layer of dust, thereby separating the fuel from the oxygen in the air. The powder also works to interrupt the chemical reaction of fire, so these extinguishers are extremely effective at putting out the fire.
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 ...
Purple-K, also known as PKP, is a dry-chemical fire suppression agent used in some dry chemical fire extinguishers. [1] It is the second most effective dry chemical in fighting class B (flammable liquid) fires after Monnex (potassium allophanate), and can be used against some energized electrical equipment fires (USA class C fires). [2]