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江西星火化工厂51.6m~3液氨铁路罐车由锦西化机厂设计制造,1980年投入运行,使用时间达21年。根据《液化气体铁路罐车安全管理规程》第五十条,对于液氨铁路罐车使用期限超过20年后,除按大修全部检查项目进行检验外,还应对罐车进行综合分析和技术评定。经对该罐车外观、测厚、无损检测等项目的检验,我们发现该罐车外观状况较差,并存在较多焊缝内部超标缺陷。因用户暂无资金更新设备,受星火化工厂的委托,我们对该罐车的超标缺陷进行了部分返修,并对剩余超标缺陷进行了综合技术分析评定。
Jiangxi Xinghuo Chemical Plant 51.6m ~ 3 liquefied ammonia railroad tanker was designed and manufactured by Jinxi Chemical Machinery Plant and put into operation in 1980 with a service life of 21 years. According to “liquefied gas railway tanker safety management regulations” Article 50, for the liquefied ammonia railway tanker service life of more than 20 years, in addition to overhaul all the inspection items for inspection, but also the tanker should be a comprehensive analysis and technical assessment. After inspecting the appearance of the tanker, thickness measurement and non-destructive testing, we found that the appearance of the tanker is poor and there are many internal defects exceeding the standard. Due to the user no funds to update the equipment, commissioned by the Spark chemical plant, we exceeded the tanker part of the defects in the rework, and the remaining over the defects of a comprehensive technical analysis assessment.