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| Study on the Adjustment of Reactor Pressure Vessel Main Bolt Residual Elongation during Individual Hydraulic Test |
| Received:November 23, 2018 Revised:February 25, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2019.02.002 |
| KeyWord:mechanics analysis bolt elongation hydraulic test nuclear power station |
| Author | Institution |
| CHEN Tao |
1. State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment, Shenzhen, China;2. China Nuclear Power Design Company, Ltd, Shenzhen , China |
| NIE Zhao-yu |
2. China Nuclear Power Design Company, Ltd, Shenzhen , China |
| HU Da-fen |
2. China Nuclear Power Design Company, Ltd, Shenzhen , China |
| XU Xiao |
2. China Nuclear Power Design Company, Ltd, Shenzhen , China |
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| Abstract: |
| Objective To adjust the acceptance value of residual elongation in the working condition of hydrostatic test to solve the problem that the values of residual elongation of reactor pressure vessel (RPV) main bolt during calibration experiment for individual hydraulic test condition are not consistent with the design requirement which is 1.63±0.03mm and some values are beyond the requirement range. Methods Considering the influence of the above difference on the bolt load, detailed analyses were carried out for the bolt, the bolt threads and connected flanges in the field of stress, fatigue and sealing of RPV. Results After two times of adjustment, new elongation values of 1.68±0.03mm were determined according to the analysis results. Conclusion Each testing index of the individual hydraulic test for the certain RPV satisfies the demand and the rationality of the numerical assessment is verified. |
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