Oxygen water into the bottle, corrosion cylinder becomes thinner oxygen with water, the residual water in the cylinder does not pour out on time, more and more, so that the cylinder is corroded, wall thickness thinning, "interface corrosion".

There are several cases of bottle explosion accident, the blasting port occurred at the corrosion interface (interface blasting) or the wall thickness thinning (thin wall blasting). Special attention should be paid to the gas cylinders in contact with seawater operation. The inspection cycle of the cylinders is two years, and the remaining pressure of the empty bottle is required to be greater than 0.2MPa. For example, on May 13, 1996, an oxygen cylinder exploded in Yantai Gas Compressor Plant. The reason is that the cylinder body is severely corroded and thinned, and the thinnest place is only 1.8mm. The gas cylinder has been exposed to the sun, and the gas pressure rises, causing explosion in the weak place (there is no regular inspection before detonation). Another example is September 4, 1996, Tianjin North China oxygen factory a filling oxygen cylinder exploded. After investigation, it was found that the gas cylinder was in contact with seawater, and the seawater was poured back into the human bottle, which made the wall corroded and thinned (only 2.2mm at the minimum wall thickness). Can not help oil can not help fire, the environment dirty color label paste oxygen combustion-assisted explosive, must prohibit oil and fire, this is common sense. Some oxygen plants can stand at the cutting site, waste collection station, etc., filling or welding operations, the site is full of oil, dirty and messy; Some even use a lighter to test a bottle of gas, and open the oxygen valve with a cigarette, which will inevitably not occur explosion accident. In order to reduce the accident of bottle explosion in welding and cutting places, it is better to draw the air pipeline of oxygen cylinder and dissolved acetylene cylinder a little longer, so that the bottle is far away from the operator. There is the color of the gas bottle is not clear, can not tell what bottle. With hydrogen bottle to fill oxygen, many is not obvious color code caused. Rough loading, unloading, collision, exposure and pressure boost explosion cylinders are strictly forbidden to knock, collision, must be gently handled, but there is a unloading method to kick the cylinders off the car with feet. Gas cylinders should be protected from the sun. In Hangzhou, an oxygen cylinder placed on the stern of a ship suddenly exploded, killing a woman who had gone to wash in a canal. The reason: the bottle was exposed to the hot summer sun (not covered), and after increasing the pressure, it exploded. To this end, summer when the shipment of gas cylinders, to be covered by sunshade, especially in the open stacked gas cylinders. Large pump small bottle filling, brewing tragedy now the filling station of liquid oxygen steam, pump bottle more problems. The bottle explosion accident occurred in Shenyang, that is, the liquid oxygen pump capacity is large, the filled bottle is small, the speed is fast, the time is short, and the excitation conditions (such as grease, exploding gas, valve friction, etc.) occurred.

Gas cylinder explosion accidents are not rare, but also a lot of lessons. Most accidents can be avoided, but because people do not pay attention to the use and operation, resulting in cylinder accidents.