目的为贯彻落实《中华人民共和国放射性污染防治法》,满足《核电厂辐射环境现场监督性监测系统建设规范(试行)》要求,对原田湾核电站环境辐射监测系统进行改进升级。方法通过模块化、专业化、可扩展性等设计理念,依托可靠的质量管理体系,采用成熟的产品,实现了改进目标。结果改进后的田湾核电站环境辐射监测站稳定运行了一年多,可靠获取了环境辐射监测数据,满足了改进要求。结论改进完成的环境辐射监测站完全满足核电站的监测需求,并能为核电厂应急决策打下坚实的基础。 Objective To carry out the “Law of the People’s Republic of China on Prevention and Control of Radioactive Pollution” to meet the “Nuclear Power Plant Radiation Environment Monitoring System Construction Site Code (Trial)” requirements, the original Tianwan Bay nuclear power station environmental radiation monitoring system to upgrade. Through the design concept of modularization, specialization and scalability, the method achieves the goal of improvement by adopting a reliable quality management system and using mature products. Results The improved environment radiation monitoring station of Tianwan NPP operated stably for more than a year and obtained reliable environmental monitoring data to meet the improvement requirements. Conclusion The improved environmental radiation monitoring station fully meets the monitoring needs of nuclear power plants and can lay a solid foundation for emergency decision-making of nuclear power plants.