“华龙一号”征兆导向应急事故规程开发

为了弥补事故导向应急事故规程（EOP）和状态导向应急事故规程（SOP）的缺陷，“华龙一号”核电技术将两者优势相结合。借鉴概率安全分析（PSA），通过大量的运行分析支持性计算，形成全新的征兆导向应急事故规程（SEOP）。以主蒸汽管道破裂事故为例，进行了SEOP引导下的典型事故应用研究及其与EOP和SOP的对比。结果表明，SEOP具有迅速直接处理事故以及较强的叠加事故应对能力，事故判断和缓解措施有效、可靠，能够合理调用能动加非能动安全系统应对事故，充分发挥了“华龙一号”安全系统设计优势，进一步提升了“华龙一号”的安全水平。SEOP开发过程所形成的思路、方法、技术体系，可用于同类核电厂的事故应急规程开发，并可为现役核电厂规程的改进提供借鉴。 

Development of Symptom Based Emergency Operation Procedure for HPR1000

In order to compensate for the defects of event-oriented emergency procedure (EOP) and state-oriented emergency procedure (SOP), HPR1000 nuclear power technology takes the advantages of the two operation procedures. Considering probabilistic safety analysis (PSA),? a new symptom based emergency operating procedures (SEOP) through a large number of operation analysis supporting calculations is established. As an example, the operator actions during steam line break accident guided by SEOP is studied and compared with EOP and SOP. The results show that SEOP can deal with the accident rapidly and directly and can defend multi-accidents. The accident identification and mitigation measures are reasonable and effective. It can make full use of HPR1000 active and passive safety systems to deal with accidents, give full play to the design advantages of the safety system, and enhance the safety level of HPR1000. The principle, methodology and technique of the development can be used in the procedure development for the similar plant and can be used as a reference to improve the procedures for nuclear power plants in service.