压水堆核电站反应堆压力容器顶封头排气管的焊接质量控制

Welding quality control of reactor vessel head vent in pressurized water reactor nuclear station

概述了压水堆核电站反应堆压力容器顶封头排气管(Reactor Vessel Head Vent,RVHV)焊接质量控制的关键要素,从坡口制备、组对、定位、焊接以及无损检测(Non-destructive Examination,NDE)等几方面对排气管以及支架的焊接质量控制措施进行了详细阐述,分析了受限空间焊接作业的安全防护措施,为国产化封头排气管提供制造经验。

The key elements for welding quality control of reactor vessel head vent in pressurized water reactor nuclear station were introduced, the welding quality control measures of vent and brackets were described in detail in terms of groove preparation, assembling, positioning, welding and non-destructive examination etc. , the safety protection measures for welding operation in restricted space were analyzed, and manufacturing experience was provided for localized head vent.