工艺尾气氚测量装置的研制

辐射防护 ›› 2018, Vol. 38 ›› Issue (1): 45-50.

工艺尾气氚测量装置的研制

常宇, 蒙金红, 钟学明, 张清杰

中核四〇四有限公司第一分公司,兰州 732850

收稿日期:2016-09-26 出版日期:2018-01-20 发布日期:2020-07-20
作者简介:常宇(1982—),男,2005年毕业于信阳师范学院应用化学专业,2007年毕业于华中科技大学无机化学专业,获硕士学位,高级工程师。E-mail:253499427@qq.com

Development of a measuring device for tritium in process

CHANG Yu, MENG Jinhong, ZHONG Xueming, ZHANG Qingjie

The First Filial Company Limited, The 404 Co.Ltd.,CNNC, Lanzhou 732850

Received:2016-09-26 Online:2018-01-20 Published:2020-07-20

摘要/Abstract

摘要： 通过选择装置材料、优化结构及参数,设计制作了有效体积为11.0 mL的测氚电离室,用于工艺尾气中氚含量的测量。用质谱法标定绘制了工作曲线,工作曲线线性范围为0.013 4%～0.168%(体积)。测试表明:装置泄漏率为5.5×10^-7 Pa·m³/s,密封性良好;本底电流为2.98×10^-14A;装置探测下限值为1.35×10^-4%(体积);变异系数≤1.50%;仪器响应时间≤10 s,响应速度快,测量周期短,满足工艺样品的检测需求。

关键词: 电离室, 氚, 本底电流, 记忆效应, 工作曲线

Abstract: Measuring device for tritium in process exhaust using ionization chamber (effective volume 11.0 mL) was developed after material selection, structure design and parameter optimization. The calibration curve was plotted with a good linearity in the range of 0.013 4%—0.168% (v). The results showed that the detection lower limit of the device was 1.35×10^-4 %(v); the coefficient of variation was no more than 1.50%; and the response time was less than 10 s. The process measurement requirements were fairly met.

Key words: ionization chamber, tritium, background current, memory effect, calibration curve

中图分类号:

TL811

常宇, 蒙金红, 钟学明, 张清杰. 工艺尾气氚测量装置的研制[J]. 辐射防护, 2018, 38(1): 45-50.

CHANG Yu, MENG Jinhong, ZHONG Xueming, ZHANG Qingjie. Development of a measuring device for tritium in process[J]. RADIATION PROTECTION, 2018, 38(1): 45-50.

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