核电厂焊评标准NB/T 20002与ASME-Ⅸ的比较研究

Comparative Study of Welding Procedure Qualification Standard between NB/T 20002 and ASME-Ⅸ in Nuclear Power Industry

对三代核电厂机组ACP1000与AP1000采用的焊接工艺评定标准NB/T 20002与ASME-Ⅸ展开了结构和内容上的比较研究;以焊接工艺评定中最具代表性的焊条电弧焊、对接接头为例,分析ASME-Ⅸ和NB/T20002的差异,同时对工艺评定的检验项目和验收标准进行了对比,并给出评价结论。

This paper studies the differences on structure and content of the welding procedure qualification standard NB/T 20002 and ASME-Ⅸ for the G-three nuclear power station ACP1000 and AP1000. This paper selects butt-welding with Shielded Metal Arc Welding （SMAW）, which is the most widely used welding process, analyzes the differences between NB/T 20002 and ASME-Ⅸ, and makes a comparison study on testing and acceptance level of welding procedure qualification, and finally gives a evaluation conclusion.