“8·29”充装台充装现场氧气瓶爆炸事故原因分析

Cause analysis of the“8·29”oxygen cylinder explosion accident on the filling station

介绍了较为少见的充装台充装过程中氧气瓶爆炸事故,描述了事故爆炸后的现场。对爆炸气瓶碎片进行化学成分分析、机械性能、金相试验、内壁附着物化学成分分析和能谱分析。通过分析认定,由于误操作油脂混进氧气瓶,高压氧气和油脂接触发生剧烈的自燃氧化放热,使瓶内的氧气迅速升温升压,超出气瓶承压极限导致气瓶爆炸。结合工作经验,提出要严格气瓶充装前的检验,加强气瓶使用和经销单位的安全监管等防范措施和建议,对氧气瓶的安全管理具有参考价值和实际意义。

The course and phenomena of oxygen cylinder explosion were introduced. The reason for the oxygen cylinder burst accident was analyzed by checking totally firstly. Then the chemical composition analysis, mechanical properties, metallographie tests and spectrum analysis of the cylinder fragments were carried out. Filling oil into oxygen was due to mioperation, and oxygen carbon tetrachloride was not used to remove oil in accordance with the relevant national standards before filling violent oxidation exothermic reaction occurred when oil was exposed to pure high pressure oxygen. The instantaneous releasing of heat produced high temperature and high pressure in gas cylinder, which exceeded its limits arid caused burst generally. It showed that the explosion was concluded as a chemical explosion because of grease. The experiences and lessons for the management and use of gas cylinder were discussed and emphasized.