核电厂超声波在线去污技术应用实践  

Application practice of ultrasonic on-line decontamination in nuclear power plant

作　　者：徐贤达 邓克春 王永辉 洪彬龙 宋沅泽 张泽群 郭飞 XU Xianda;DENG Kechun;WANG Yonghui;HONG Binlong;SONG Yuanze;ZHANG Zequn;GUO Fei(Fujian Ningde Nuclear Power Co.Ltd.,Fujian Fuding 352000)

机构地区：[1]福建宁德核电有限公司,福建福鼎352000

出　　处：《辐射防护》2024年第S01期116-120,共5页Radiation Protection

摘　　要：介绍了某核电厂应用超声波在线去污工艺去除一回路管线中沉积的辐射热点的研究实践。研究选取超声功率60 W、100 W分别应用在26.7 mm、88.9 mm管线中的去污实践。实践表明,超声波在线去除热点效率可达60%~70%,较常规冲洗工艺效果明显。同时研究表明,超声波在线去污应用需综合考虑现场作业环境、超声功率、介质流速、核素沉积方式等因素,以使其发挥更好的应用效果。This paper mainly introduces the research practice of removing radiation hot spots deposited in the primary coolent system lines by ultrasonic on-line decontamination process in NPP.In this study,ultrasonic power of 60 W and 100 W were applied to the decontamination practice of 26.7 mm and 88.9 mm lines,respectively.The practice shows that the efficiency of on-line hot spot removal by ultrasonic can reach 60%-70%,which is more obvious than that by conventional flushing process.At the same time,this research shows that the application of ultrasonic on-line decontamination needs to consider the factors such as on-site working environment,ultrasonic power,medium flow rate and radionuclide deposition mode comprehensively,so as to make it achieve a better application effect.

关 键 词：超声波 在线去污 核电厂 

分 类 号：TL944[核科学技术—辐射防护及环境保护]