报告介绍了现有的反应堆运行工况划分及安全验收标准，包括初始事故分类、运行工况分类、二回路排热增加与减少、冷却剂系统流量降低、反应性和功率分布异常以及事故响应序列。基于此， 报告对已公开发表的铅冷快堆概念堆型开展的事故安全分析进行了综述，包括在欧盟的 EFIT、 ELSY、 ALFRED、MYRRHA，俄罗斯的 SVBR、中国的 M2LFR-1000 和 SNCLFR-100。对这些概念堆进行了概述，包括整体结构、设计参数、设计工况、事故进程等。

The report describes the existing reactor operating condition classification and safety acceptance criteria, including initial accident classification, operating condition classification, secondary loop heat increase and decrease, coolant system flow reduction, reactivity and power distribution anomalies, and accident response sequence.Based on this, the report provides a review of the published accident safety analyses carried out by conceptual FCRS, including EFIT, ELSY, ALFRED, MYRRHA in the EU, SVBR in Russia, and M2LFR-1000 and SNCLFR-100 in China.These concept reactors are summarized, including the overall structure, design parameters, design conditions, accident process and so on.