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首页> 外文会议>ASME Pressure Vessels and Piping conference >OPERATIONAL LESSONS LEARNED BASED ON COMPREHENSIVE TEMPERATURE MEASUREMENTS AT PRIMARY CIRCUIT COMPONENTS
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OPERATIONAL LESSONS LEARNED BASED ON COMPREHENSIVE TEMPERATURE MEASUREMENTS AT PRIMARY CIRCUIT COMPONENTS

机译：根据主要电路组件的综合温度测量结果学习的操作经验

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摘要

In nuclear power plants operated by E.ON, thermocouples have been installed since commissioning of the plants at fatigue relevant locations, especially at primary circuit components. Temperature measurement planes have been retro-fitted, further developed and the positions of the measurement planes have been reassigned and optimized continuously based on operational lessons learned. Comprehensive surveillance activities yield to a significant amount of information which is used to analyze the component specific health status. Additionally this information can be used to optimize plant's behavior in the context of operational excellence. An evaluation of temperature measurement is needed from the regulatory point of view and reported periodically in the context of long term fatigue evaluation being a significant part of the German ageing management process and break preclusion concept. Beyond that, the detailed information of temperature transients, gained by these measurements, allows the engineer to analyze thermal loadings of monitored components. Subsequently this information is used to optimize operation of the plants by minimizing fatigue relevant transients. The more detailed the temperature transient information is the more complex analytical and numerical models have to be in order to comprehensively consider relevant effects. Therefore numerical Finite-Element models of primary circuit components have been developed allowing the engineer to analyze temperature loading (e.g. stratification or plug-flow events) in detail and to draw conclusions being used to optimize the plant. In the context of this publication examples of pressurized light water reactors will be discussed in detail showing the ability of the detailed evaluation process and the effectiveness of the evaluation procedure: 1. Operational lessons learned from temperature measurement evaluation. 2. Minimizing stratification events in the surge line by optimizing the point in time when main coolant pumps are turned off. 3. Temperature loading of the auxiliary spray line during start-up phase.
机译：在由E.ON运营的核电站，已经安装了热电偶，自疲劳相关地点调试植物，特别是在初级回路组件。温度测量平面已经重新装配，进一步开发，测量平面的位置已经基于所学到的操作课程连续地重新分配和优化。综合监测活动收益率为大量信息，用于分析组件特定的健康状况。此外，这些信息可用于优化工厂的行为在运营卓越的背景下。在长期疲劳评估的情况下，需要评估温度测量，并在长期疲劳评估中报告是德国老龄化管理进程的重要组成部分和突破禁止概念。除此之外，通过这些测量获得的温度瞬变的详细信息允许工程师分析受监控部件的热量负载。随后，该信息用于通过最小化疲劳相关瞬变来优化植物的操作。更详细的温度瞬态信息是更复杂的分析和数值模型必须是为了全面考虑相关的效果。因此，已经开发了初级电路部件的数值有限元模型，允许工程师详细分析温度负荷（例如分层或插塞事件）并得出用于优化工厂的结论。在本出版物的上下文中，将详细讨论加压光水反应器的实例，显示了详细评估过程的能力和评价程序的有效性：1。从温度测量评估中汲取的操作教训。 2.通过优化主冷却液泵关闭时的时间点，最小化喘振线中的分层事件。 3.启动期期间辅助喷射线的温度负荷。

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