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对蒸汽发生器(E-53)连接焊缝裂纹产生及扩展原因进行了分析;按国标GB/T19624—2004《在用含缺陷压力容器安全评定》中平面缺陷的简化评定方法,分析计算了连接焊缝最大容许轴向和环向穿透裂纹长度,并对该压力容器安全运行提出了建议措施.
The reason of crack generation and expansion in the weld of steam generator (E-53) was analyzed. According to the simplified evaluation method of plane defects in GB / T19624-2004 Safety Assessment of Flaws Containing Defective Flaws, the connection The maximum weld allowable axial and circumferential penetration crack length, and the safety of the pressure vessel proposed measures.