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对反201加氢反应器上头盖异径管环焊缝磁痕进行了分析,并采用渗透检测、金相分析等方法进行验证,最终判定该磁痕为非相关磁痕,从而避免了一次不必要的返修。
The magnetic marks on the head cap reducer and girth welds on the anti-201 hydrogenation reactor were analyzed and the permeability marks and the metallographic analysis were used to verify the marks. The magnetic marks were finally determined to be non-related magnetic marks, Rework necessary.