秦山核电二期扩建工程3#堆吊篮筒体焊接变形的处理

Disposal of welding deformation in Qinshan nuclear power phase Ⅱ extension project 3# unit

秦山核电二期扩建工程3#堆核反应堆堆内构件吊篮筒体在焊接过程中,出现了严重的焊接变形,整个筒体焊接后,与设计要求相比,超差很大。为了保证反应堆堆内构件的功能,必须采取相应的处理措施来实现吊篮筒体的正常功能,并确保核反应堆堆内构件正常安全的运行。介绍了秦山二期扩建工程核反应堆堆内构件3#堆吊篮筒体出现焊接变形的情况,结合堆内构件的设计要求,提出具体的处理措施,3#堆堆内构件最终通过出场验收,在现场安装过程中,上部堆内构件也可以顺利吊入、吊出吊篮筒体。

There is a severe deformation in the welding of core barrel in Qinshan Nuclear Power Phase II Extension Project Reactor 3# unit.After welding,the dimension of core barrel is quite out of the tolerance to the design requirement.To assure the normal function of the core barrel,measures must be adopt.Firstly,the paper introduces welding deformation in Qinshan Nuclear Power Phase Ⅱ Extension Project Reactor 3# unit.Then combining the design requirements,the paper brings forward specific disposal measurements.The disposal result is successful.