This article describes the Opening-nozzle revamp for a de-BDO tower,whose plan was drawn up in accordance with production specification.The results show that the tower meets the standards and specification requirements by visual inspection, non-destructive test and pressure test.%某脱BDO塔进行开孔接管的技术改造，根据生产技术条件，制定了详细、科学的改造方案，经外观检查、无损检测及耐压试验证明改造达到了标准及生产技术的要求。
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