固体废物处置设施放射性泄漏监测方法研究  

Study on Monitoring Method of Radioactive leakageat Solid Waste Disposal Site

作　　者：苏家豪 陈姗红 王欣 张伟 Su Jia-hao;Chen Shan-hong;Wang Xin;Zhang Wei(China Nuclear Power Engineering Corporation,Beijing 100840,China)

机构地区：[1]中国核电工程有限公司,北京市海淀区西三环北路117号100000

出　　处：《核电子学与探测技术》2025年第2期260-266,共7页Nuclear Electronics & Detection Technology

摘　　要：目前地下水定期监测的方式对放射性核素释放的响应时间较长,存在局限性。本文对固体废物处置设施放射性泄漏监测方法开展研究,通过对固体废物处置设施放射性迁移路径分析,认为在工程屏障中设置γ探测器可更早发现放射性泄漏,利用蒙特卡洛方法对探测器不同布置位置的本底和信号进行模拟得出探测器布置在距离地面35cm及以下区域时,使用γ剂量率作为监测指标可在信噪比达到1的前提下发现单桶放射性物质泄漏,验证了在工程屏障中设置γ探测器实现放射性泄漏在线监测的可行性。Currently,the response time of periodic groundwater monitoring methods to radioactive nuclide release is relatively long and has limitations.Research into monitoring methods for radioactive leakage from solid waste disposal facilities is necessary.An analysis of the radioactive migration pathways within these facilities suggests that placingγdetectors within engineering barriers could enable earlier detection of radioactive leakage.Using the Monte Carlo method,simulations of the background and signal for different detector placements were conducted.The analysis indicates that when detectors are placed at or below 35 cm from the ground,usingγdose rate as a monitoring indicator can detect single-barrel radioactive material leakage with a signal-to-noise ratio of 1.This demonstrates the feasibility of implementing online radioactive leakage monitoring by installingγdetectors within engineering barriers.

关 键 词：废物处置 放射性泄漏 蒙特卡罗方法 

分 类 号：TL816.3[核科学技术—核技术及应用]