在对进口冷箱的射线检测底片进行复查时，对供应商提供的4张底片评定结果提出了异议。其中3张底片的对应部位经过重新检测以及打磨后获得了一致的验收结论。但对第4张底片，在从三个方向对该缺陷进行重新拍片后，制造商判定结果为焊缝根部与垫板的收缩沟，购买方判断为未熔合缺陷。为此，分别设计了超声波检测和重新制作试件的两种方案，对各自的判定结果进行验证。验证结果证实了缺陷性质为未熔合，为进口特种设备消除了安全隐患。

During the review for the radiographic testing film of an imported cool box, four films were found existing defects, and three of them gained the accepted result through inspection again and graining, but one film had different evaluating results between the producer and the purchaser. The producer concluded it as a defect caused by welding section, and the purchaser concluded it as a nonfusion. So two plans were designed for the conclusion of each other, and the validation results showed it as a nonfusion, and it eliminated the safety risk for the imported special equipment.