核电站安全壳钢衬里焊接工艺研究及质量控制

Welding technology research and quality control of containment vessel steel liner in nuclear power plant

安全壳钢衬里现场拼装焊接前进行焊接工艺评定是保证安全壳钢衬里焊接质量的重要前提,在民用核安全设备制造中尤为重要。介绍了焊接工艺评定准备工作、焊接工艺评定目的及难点、工艺评定试样的制备和试验方法、焊接工艺评定结果分析以及焊接工艺评定质量控制等方面的内容,通过焊条电弧焊和埋弧焊工艺评定结果表明,焊接工艺评定单位拟定的焊接工艺是正确的。

Before on-sile assembling and welding of steel liner of containment vessel, welding procedure qualification （WPQ） is important premise for ensuring its welding quality ,especially in the fabrication of civil nuclear safety equipments. In this paper, some aspects of WPQ are described, including the preparatory work, purpose and difficulties, sample preparation and test methods, result analysis, and quality control, etc. The WPQs of shielded metal arc welding and submerged arc welding show that the welding technology chosen by the WPQ company is correct.