To correct and report operation deficiency, unusual events and safety hazards conditions to engineer.
维修和上报设备运行缺陷，不寻常的运行情况和安全隐患。
The nonstandard technique of using oxygen, deficiency capability of oxygen supplying equipment, the existed quality and design questions in lance, the unreasonable operation etc.
用氧技术不规范、供氧设备能力不足，喷头存在质量、设计问题，操作不合理等是影响氧枪枪龄的主要原因。
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