CPR1000核电厂核岛主设备热棘轮现象试验评估方法研究

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Research on Experiment Evaluation Method for Thermal Ratchet of Nuclear Equipment at CPR1000 Nuclear Power Station

1. China Nuclear Power Engineering Co. Ltd., Shenzhen, Guangdong, 518124, China;
2. Nuclear and Radiation Safety Center, SEPA, Beijing, 100082, China

摘要: 针对RCC-M评定准则对部分部件的热棘轮现象无法做出安全性评定的问题,综合考虑塑性变形和弹性变形的影响,详细分析CPR1000核电厂稳压器电加热喷雾接管的热棘轮现象。计算结果表明,RCC-M热棘轮评定准则过于保守,试验分析方法更精确,可提高核电建设的经济性。
- 热棘轮 /
- 累积变形 /
- 效率设计曲线 /
- 比率曲线
Abstract: For the question that RCC-M criteria can not make a security assessment for the ratchet phenomenon of some components, the experience analysis method of thermal ratchet was introduced, and a more detailed thermal ratchet analysis of the electrically heated pressurizer spray nozzle at the CPR1000 nuclear power plant was presented by the Efficiency Design Curve method and the Ratio Curve method. The results achieved indicate that the RCC-M thermal ratchet evaluation criteria are too conservative and the more accurate experience analysis method can improve the economics of nuclear power construction.
- Thermal ratchet /
- Accumulated deformation /
- Efficiency design curve /
- Ratio curve