Daily Question: Methanol Technology Edition 20170917 (2)

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This post was last edited by Xiao Yu on 2017-9-17 at 15:03. There are rewards for correct answers, and rewards for participating in the discussions as well. Let’s learn from the best practices in the “Brothers” section; everyone can improve through Q&A sessions and gain maturity through posting replies. Safety knowledge quiz: (Extracted from the Coal Chemical Industry Safety Education Platform) On November 10, 2011, a transformer caught fire at a paper mill in Zhengzhou, Henan. Mr. Chu went to put out the fire using a fire extinguisher, but the extinguisher exploded, causing damage to his right atrium. How could a fire extinguisher, which is supposed to save lives in such critical moments, explode? You really shouldn’t take it lightly; an expired fire extinguisher is truly a time bomb. 1. Fire extinguishers that are past their useful life should be considered obsolete products. Not only do they fail to function due to insufficient pressure, but their cylinders also become thinner as a result of corrosion. The chemical agents contained in these extinguishers, such as carbon dioxide, flame-retardant powder, and foaming agents, can undergo various chemical reactions when exposed to sunlight, and even minor impacts can lead to explosions. The useful life of a fire extinguisher is generally 5 to 10 years; it is essential to pay close attention to this and replace it in a timely manner – under no circumstances should expired fire extinguishers be used! 2. It should not be stored in high-temperature areas, and it must be handled with care during transportation. 3. Fire extinguishers must not be disassembled or assembled without permission; they should be taken to a qualified repair facility for refilling and maintenance. 4. If a fire extinguisher is severely corroded or its cylinder is deformed, it should be stopped from use immediately and sent to a repair facility for treatment. 5. It is strictly prohibited to sell fire extinguishers as scrap metal. Fire extinguishers that need to be disposed of must have holes drilled in their cylinders or containers.