Hits:Updated:2019-03-27 19:03:33【Print】
The correct filling of the gas cylinder is one of the keys to ensuring the safe use of the gas cylinder. Improper filling, such as gas mixing and overfilling are dangerous.
Gas mixing means that two gases or liquefied gases are charged into the same cylinder. The most common mixing phenomenon is the mixing of combustion gas and flammable gas such as oxygen. For example, a cylinder filled with flammable gas (such as hydrogen, methane, etc.) has not been replaced, cleaned, etc., and there is residual gas in the bottle. Used to fill oxygen. If the two media chemically react under suitable conditions, it will cause a serious explosion. Therefore, gas mixing is never allowed.
Overloading is also a common cause of gas cylinder explosions. Excessive filling of the cylinder is affected by the ambient temperature, especially in the summer, the liquefied gas in the cylinder rapidly expands due to the heating volume, causing the pressure inside the bottle to increase sharply, causing the cylinder to rupture and explode.
In order to prevent over-loading of gas cylinders, the following aspects should be done. The filling work shall be carried out by a special person. The filling personnel shall receive safety education and assessment on a regular basis; the filling personnel shall operate carefully and shall not leave the post without authorization, and at the same time pay attention to evacuating the remaining liquid and verifying the weight of the bottle. Weighing instruments for liquefied gas filling are calibrated at least once every three months, and the maximum weighing of the weighing instruments used is 1.5 to 3 times the usual amount. According to the bottle card, record carefully. Filling cylinders should have a person responsible for repeating the pounds. If the device is automatically metered, the excess can automatically alarm and cut off the valve.
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