The weld step and process were introduced, the experience of weld retrofit of the valve was rarely gained, and can be used for reference.

• 介绍了缺陷处理的具体工艺措施、过程，简述了汽包筒体缺陷处理方面的经验，为国内运行机组同类缺陷的焊补提供了借鉴。