三门核电厂2号机组蒸汽发生器管板钻孔偏差原因分析及问题处理

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Disposition of Drilling Deviation for Steam Generator Tubesheet in Sanmen NPP Unit 2

摘要: 蒸汽发生器(SG)管板组件深孔钻是SG制造过程中的关键工艺,也一直是制造过程中的难点之一。三门核电厂AP1000机组SG管板较之二代加核电机组的管板厚度增加,管板钻孔难度也随之增加。本文介绍了三门核电厂2号机组SG管板3个孔钻偏问题的处理,期望在后续SG制造过程中,能够从中吸取经验教训,避免类似问题的出现。
- AP1000 /
- 蒸汽发生器(SG) /
- 管板 /
- 钻孔 /
- 偏差
Abstract: Abatract: Deep hole drilling of steam generator tube sheet assembly is an important process for SG fabrication. This process is always difficult during manufacturing. The SG Tube sheet of Sanmen AP1000 Units is thicker than that of Nuclear Power Generate II+. The difficulty of Tubesheet Drilling also grows with the larger thickness. This paper describes the disposition of SG Tube sheet drilling deviation for Sanmen Nuclear Power Plant Unit 2. It is expected to provide some useful experience for the future SG manufacturing, avoiding such problem occurs again.
- AP1000 /
- Steam generator /
- Tube sheet /
- Drilling /
- Deviation