Study on the Influence of Pressure Pipe Deformation on Life Extension of QINSHAN CANDU-6 HWR
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摘要: 为了论证秦山CANDU-6重水堆（HWR）压力管二阶段延寿的可行性，通过唐氏变形方程计算和数据拟合等方法对压力管二阶段延寿中尺寸变化（轴向伸长、径向膨胀、壁厚减薄）的影响进行了全面分析，并对压力管尺寸变化的各项因素给出了明确的评定准则和评价结论。结果表明，压力管径向膨胀可能成为压力管寿命延长的制约因素，并针对此制约因素给出了相关的影响分析和应对建议措施。本研究为秦山第三核电厂CANDU-6重水堆压力管二阶段延寿工作奠定了基础。
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关键词:
- 重水堆（HWR） /
- 压力管 /
- 等效满功率小时（EFPH） /
- 延寿
Abstract: In order to prove the feasibility of the second stage life extension of pressure pipe in Qinshan CANDU-6 heavy water reactor (HWR), the influence of the size change (axial extension, radial expansion and wall thickness thinning) in the second stage life extension of pressure pipe is analyzed comprehensively by means of Tang deformation equation calculation and data fitting, and the evaluation criteria and evaluation conclusions are given for the factors of the change of pressure pipe size. The results show that the radial expansion of the pressure pipe may be the restraining factor for the life extension of the pressure pipe. In view of this restraining factor, this paper gives the related influence analysis and countermeasures. This study lays the foundation for the second stage life extension of the pressure pipe of Qinshan No. 3 Nuclear Power Plant.-
Key words:
- HWR /
- Pressure pipe /
- Effective full power hour（EFPH） /
- Extend life
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图 1 压力管轴向伸长实测数据线性增长趋势
1#H09/H12/Q14—重水堆压力管编号
Figure 1. Linear Growth Trend of Measured Data of Axial Elongation of Pressure Pipe
表 1 压力管径向膨胀回归分析预测上限
Table 1. Upper Limit of Regression Analysis Prediction for Radial Expansion of Pressure Pipe
机组 95%置信度下内径上限/ mm 1 >109.09 2 >109.23 
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表 2 压力管壁厚减薄回归分析预测下限
Table 2. Lower Limit of Regression Analysis for Wall Thickness Thinning of Pressure Pipe
机组 95%置信度下壁厚下限/mm 1 >3.97 2 >3.87
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[1] 赵卫东,石秀强. 秦山CANDU-6重水反应堆锆合金压力管的老化形式与缓解措施[J]. 核动力工程,2013, 34(5): 92-95. doi: 10.3969/j.issn.0258-0926.2013.05.022 [2] 商俊敏,邹廉列,袁建中,等. 重水堆压力管长度测量及数据分析[J]. 核动力工程,2012, 33(6): 133-136. [3] 唐炯然. CANDU-6 核电机组压力管寿命管理[J]. 核科学与工程,1999, 23(3): 266-279. [4] 唐炯然. 锆铌压力管在CANDU反应堆中的辐照变形计算方法: 中国, 201410850429.X[P]. 2018-11-02 -
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