Operating license extension (OLE) is now performed to expiration the operating license in some nuclear power plants (NPPs) in China. Prior to the safety demonstration, it is obliged to identify the demonstration basis. Currently, license renewal (LR) from the US and long term operation (LTO) from IAEA are two predominant OLE strategies in the world. In this paper, current licensing basis (CLB) for LR and LTO were comparative studied, methods and concrete contents were suggested on basis of technology policy given by National Nuclear Safety Administration (NNSA), to provide the technical support on safety demonstration basis (SDB) for OLE in the future.%目前我国部分核电厂正在开展核电厂运行许可证延续论证工作.在延续论证过程中,需要首先确定审查或论证的基准文件作为安全论证基准.本文调研了国际上核电厂运行许可证延续论证体系中安全论证基准的内容,并依据我国核安全监管部门相关技术政策的要求,提出了我国核电厂运行许可证延续安全论证基准的确定流程、方法及具体内容的建议,以期为未来我国核电厂提交运行许可证有效期限延续申请中采用适用且有效的基准文件方面提供帮助.
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