船用移动式放射性碘-131监测仪的研制  

Design and manufacture of the ship-borne portable Iodine-131 monitor

作　　者：闫学昆[1] 张燕[1] 谷铁男 李洋[1] 刘明健[1] YAN Xue-kun;ZHANG Yah;GU Tie-nan;LI Yang;LILT Ming-jian(No.92609 Unit of the PLA,Beijing 100077,China)

机构地区：[1]中国人民解放军92609部队

出　　处：《舰船科学技术》2019年第1期138-140,共3页Ship Science and Technology

摘　　要：放射性131I是核事故早期重点监测和关注的典型核素之一。介绍一种船用移动式131I监测仪的研制。采用井型活性炭滤盒采集样品,内置NaI探测器实时监测131I核素的364 keV特征峰。触摸液晶屏上显示131I的活度浓度测量结果,当浓度超过报警阈值时可发出声光报警信号。设备重约40 kg,底部安装有脚轮,便于移动式携行,可用于舰船集防区内及核事故后环境中放射性核素131I的识别和活度浓度测量,对于判定舰船集防效果和提升核事故应急监测的能力具有重要意义。Iodine-131 is one of the typical nuclides that needs to focus on and monitor in the early stage of nuclear accidents. Design and manufacture of a ship-borne portable Iodine-131 monitor is presented here. 131 I was collected by the welltype active carbon filter, and its characteristic peak with gamma-ray energy 364 keV was detected by NaI detector. Activity concentration of 131 I was displayed on the touch screen, and once the limit threshold is exceeded it can send out sound and light alarm signals. It weighs about 40 kg and has two castors in the bottom, as is convenient for portable carrying and use.This portable Iodine-131 monitor can be used to detect whether radioiodine exists inside the collective protection region of surface ship and surrounding environment of the nuclear accident region, which has important significant to evaluate the protective efficacy of the collective protection region and enhance the capacity of nuclear emergency monitoring.

关 键 词：核事故救援 核应急监测 放射性碘-131 活性炭采样 移动式设备 舰船集体防护 

分 类 号：TP816.2[自动化与计算机技术—检测技术与自动化装置] TL817.2[自动化与计算机技术—控制科学与工程]