PPE

Why can’t oxygen cylinders be contaminated with grease

Why can’t the oxygen bottle, especially the mouth of the bottle, be contaminated or contacted with grease

this problem is not completely familiar to the managers engaged in operation, storage and transportation. Oils and fats, especially those containing unsaturated fatty acids, are easily vaporized and exothermic. The reason why oil gauze head and oil cloth can spontaneously ignite is that oxidation takes place in the air and heat accumulation does not disperse. When it reaches the spontaneous combustion point, it causes spontaneous combustion. However, the oil vaporizes slowly in the air, and the heat generated is dissipated quickly, so it is not easy to accumulate heat and self ignite. Because of its strong oxidizability, pure oxygen can promote the violent combustion of combustibles. When oils and fats meet with pure oxygen, their gasification speed is greatly accelerated, and a large amount of heat is released at the same time. A rapid rise in temperature will soon cause combustion. 1f there is grease on the mouth of the oxygen bottle, when the oxygen is ejected rapidly, the grease will oxidize rapidly, and the heat generated by the friction between the high-pressure air flow and the mouth of the bottle will further accelerate the oxidation reaction. The grease on the oxygen bottle or pressure reducing valve will cause combustion or even explosion, This is the reason why the oxygen cylinder, especially the bottle mouth and accessories in contact with oxygen are strictly prohibited from contacting with grease

what measures should we take to prevent oxygen cylinders from being contaminated with oil during storage, transportation and use

1. there should be no grease sign on the oxygen cylinder and the warehouse where oxygen is stored to remind people that except the oxygen cylinder, the accessories (such as pressure reducing valve, welding torch, gas transmission hose, etc.) in contact with oxygen should not be allowed to contact grease2. 1t is strictly forbidden to store and transport oxygen cylinders together with grease in warehouses and transport vehicles. 1f the warehouse and vehicles are contaminated with oil, they must be thoroughly removed before they can be stored or shipped

3. During storage and transportation, the oxygen cylinder should wear safety helmet to prevent the invasion of grease or dust or mechanical damage to the oxygen cylinder mouth< 4. Operators and managers are not allowed to wear greasy work clothes and gloves to contact the oxygen cylinder and its accessories< 5. Once the cylinder is stained with grease, it should be cleaned with carbon tetrachloride or cleaning agent, but it should not be cleaned with combustible organic solvent China labor insurance net

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