状态导向与事件导向相结合的二回路管道破裂事故处理规程开发

"华龙一号"采用征兆导向应急运行规程(SEOP)进行事故处理。本文对SEOP中二回路管道破裂事故相关规程进行研究,包括规程开发和支持性验证。在规程的开发过程中,构建了合理的规程框架以及不同事故采用的处理规程,并结合"华龙一号"的设计特征,确定了主要恢复策略以及相关的重要定值。在支持性验证过程中,选取典型二回路管道破裂事故进行论证,结果表明,对所选的工况,SEOP提供的缓解策略能够及时有效地将核电厂引导至预期的安全可控状态。此外,通过对不同类型事故规程进行比较,证明了SEOP在涵盖的事故范围和恢复操作的时效性方面的优势。通过本文的研究,为"华龙一号"二回路管道破裂事故处理规程的开发和验证建立了合理的方法。

Development of Operation Procedure for Secondary Pipe Break Accident Integrating State Oriented and Event Oriented

HPR1000 adopts the symptom based emergency operating procedures (SEOP) to deal with accidents. In this paper, the related procedures for secondary pipe break accidents in SEOP are studied, including the development of procedures and supporting verification. In the development process of the procedures, a reasonable framework of procedures is constructed, and the operation procedures for different accidents are summarized. Based on the design characteristics of HPR1000, the main recovery strategies and relevant important setpoints are determined. In the supporting verification process, the typical secondary pipe break accidents are selected for analysis. The results show that the mitigation strategy provided by SEOP can effectively guide the nuclear power plant to the required safe and controllable state in time. In addition, by comparing different types of accident procedures, the advantages of SEOP in the coverage of accidents and the timeliness of recovery operation are proved. Through the research of this paper, a reasonable method is established for the development and verification of the operation procedure for HPR1000 secondary pipe break accidents.