Application of Transient Supervision and Processing Method in Nuclear Power Plant Operation License Extension
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摘要: 核电厂延续运行前，由于缺乏瞬态监督管理对核电厂延续寿命影响的具体认知，相关瞬态监督和控制仅限于设计寿期范围内，没有涉及到延续运行。这导致核电厂在运行前期没有针对性地管理瓶颈瞬态的消耗，从而减少了核电厂实际可达的寿命长度；或者相关瞬态数据收集不够详细，不足以支撑更细致的疲劳分析，在延续运行评估时只能采取更多的包络处理，难以实现更长的评估寿命。本文针对上述此问题，通过汲取秦山核电厂延续运行研究中瞬态相关经验，从日常运行监督和专项延续评估两个方面，对核电厂延续运行瞬态监督和数据处理进行研究，形成了适用于核电厂延续运行的瞬态管理技术方法，可有效指导后续核电机组开展延续运行工作。Abstract: Before the extended operation of the nuclear power plant, due to the lack of specific understanding of the impact of transient supervision and management on the extended life of the nuclear power plant, the relevant transient supervision and control are only within the design life and do not involve the extended operation. This leads to the failure of the nuclear power plant to manage the consumption of bottleneck transients in the early stage of operation, thus reducing the actual life length of the nuclear power plant; Or the relevant transient data collection is not detailed enough to support more detailed fatigue analysis. In the extended operation evaluation, only more envelope processing can be adopted, which is difficult to achieve a longer evaluation life. In view of the above problems, by learning from the transient related experience in the extended operation research of Qinshan Nuclear Power Plant, this paper studies the transient supervision and data processing of the extended operation of nuclear power plant from the two aspects of daily operation supervision and special continuous evaluation, and forms a transient management technical method suitable for the extended operation of nuclear power plant, which can effectively guide the extended operation of subsequent nuclear power units.
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Key words:
- Transient supervision /
- Fatigue /
- Operation License Extension
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图 1 某类设计瞬态和实际瞬态温升对比曲线
Figure 1. Comparison Curve Between Designed Transient and Actual Transient Temperature Rise
表 1 瞬态发生频率
Table 1. Frequency of Transient Occurrence
事故分类 发生频率（P） 一般事故工况 P>10−2 重大事故工况 10−2<P<10−4 极限事故工况 10−4<P<10−6 
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[1] 国家核安全局. 关于印发《〈核电厂运行许可证〉有效期限延续的技术政策（试行）》的通知[EB/OL]. （2015-12-31）[2021-12-18]. https://www.mee.gov.cn/gkml/sthjbgw/haq/201601/t20160105_321062.htm. [2] Electric Power Research Institute. Material reliability program: fatigue management handbook: MRP-235, Rev 3[Z]. U. S: EPRI, 2020. 3002018246. -
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