Fire,precautions,aluminum,powd business, insurance Fire precautions of aluminum powder
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According to metal powder supplier, aluminum powder has greater fire risk, therefore, in theproduction, storage, transport and use, if ignored, it is easily to occur explodingand burning incident, but fight the blaze is also more difficult. Aluminum powder fire characteristics Aluminumpowder fire hazards: encountered smaller ignition source in air can burst intoflames; aluminum powder stained with grease in the air, such as heap storagefor a long time, collector lingers, also easy to cause spontaneous combustionor explosion, and the smaller the aluminum powder particle size, the greater riskof explosion, when it reached 40g/m3concentration above in the air, encounter fire can explode. Therefore, in themanagement of hazardous chemicals, aluminum powder is classified as twoflammable solids.Aluminumpowder fire is characterized by a high flame temperature, fast burning speed,big explosive power, strong radiant heat. While burning, it was generallygreenish blue flame and emit silvery white light, explosion pressures can be upto 6.3kg/cm2. To thesurrounding buildings and personal safety have great destructive power and perniciousness.Thus, fighting aluminum powder fire is difficult. First the fire scene afterexplosion is more complex; second it needs to choose right fire extinguishingagent while fighting, and take the proper fire fighting methods; three due to strongradiant heat, fire rescue are difficult to close; fourth is aluminum powder lightweight, fineness small, easy to fly, must hold a cautious approach in fighting,otherwise, will make aluminum powder splashes, form of secondary explosions,resulting in greater losses; five is the high flame temperature, while thealuminum powder looseness is small, difficult to put out. Extinguishing agent selection Inorder to effectively extinguish fire aluminum powder, it must be correctly chooseand use of fire extinguishing agent. Firstly, aluminum powder on fire can notbe fighting with water and foam, it is usually because the aluminum powder surfacehas a layer of oxide film generally will not react with water. But the new made aluminumoxide or the film has fallen off aluminum powder, and the fire or in a hightemperature baking aluminum powder can quickly react with water and bubbles,emit hazardous explosive combustion hydrogen, and mixed with air will form explosivemixtures. Therefore, the aluminum powder fire ban fighting with water and foam.Secondly,aluminum powder at room temperature can have a combustion reaction withchlorine and bromine, also can react with halogenated alkyl to generate a smallamount of aluminum chloride plays catalytic role, it often leads to explosivecombustion. Therefore, aluminum powder fire also can not use CTC, 1211 fireextinguishing agent to fight the blaze.Third,aluminum powder light weight, fineness, once encountered wind or gas jet is easilyflying to form explosive mixtures in the air. Therefore, aluminum powder fire cannot use carbon dioxide and other gases extinguishers to fight the blaze.Accordingto the above characteristics, aluminum powder fire fighting should use 7150 extinguishing agent or dry chemical,dry sand and graphite powder, dry magnesium, etc. to fight the blaze. Because thisfire extinguishing agent can cover in the surface of the burning aluminumpowder, to cut off the air, and can effectively prevent the aluminum powder blowingto mix with air, so as to achieve the purpose of fire asphyxia. Extinguish the aluminum powder fire should be notedthe issues as follow Accordingto the characteristics of aluminum powder fire burning, in the fighting processshould pay attention to the following questions. In the fighting, it is not allowedto freely open the window to avoid the wind makes aluminum powder flying,causing an explosion wounding. Firefighters should pay attention to observe andapply the terrain as cover, to avoid radiation heat, hot body, houses collapseand caused explosion casualties. Make full use of safety equipment, ready toprotect themselves, to facilitate team action. Timely closure the workshop milland process systems of various valves, first stop machine, power outage andthen fighting the blaze. ArticleSource:http://www.mhcmp.com
Fire,precautions,aluminum,powd