^(13)N监测仪的设计及应用  

Design and Application of Leakage Monitor for Reactor and Control Rod Driving System(In Chinese)

作　　者：李冬馀[1] 邹益民[1] 凌球[2] 郭兰英[2] 

机构地区：[1]核电秦山联营有限公司,浙江海盐314300 [2]南华大学,湖南衡阳421001

出　　处：《中国核科技报告》2009年第1期114-122,共9页China Nuclear Science and Technology Report

摘　　要：利用^(13)N衰变子体β^+粒子发生正电子湮灭效应,通过测量正电子湮灭产生的γ光子数而获得取样气体中的^(13)N核密度,与反应堆主冷却剂中已知的^(13)N核密度相比较,可确定承压边界堆本体及控制棒驱动机构的泄漏情况。本章还介绍了秦山第二核电厂(压水堆)增设堆本体及控制棒驱动机构泄漏监测系统的缘由、监测方案的选择;介绍了监测系统的结构和组成、主要技术指标及功能;介绍了^(13)N监测仪各部件的组成及主要作用。四年多的运行表明,该监测仪的长期稳定性、平均无故障时间均满足设计要求,同时通过计算方法的改进可基本消除其他核素康普顿坪的影响,进一步降低仪器的探测下限。By measuring the number ofγphotons produced by the annihilation of theβ^+ particles of ^(13)N's decay product in the sample air,the nuclide density of ^(13)N can be obtained,comparing with its density in the reactor coolant,we can get the leakage information of the reactor vessel and control rod driving system.the article describes the cause of improvement in monitoring for leakage of reactor vessel and control rod driving system of Qinshan Second Nuclear Power Plant (PWR reactor),also the determination of ...

关 键 词：泄漏 ^(13)N监测仪 

分 类 号：TM623.8[电气工程—电力系统及自动化]