Design of the Online Gross γ Monitoring Instrument at the Exit of the Helium Purification System in HTR-PM

被引：2

作者：

Lou, Mengqi ^{[1
,2
]}

Zhang, Liguo ^{[1
]}

Xie, Feng ^{[1
]}

Cao, Jianzhu ^{[1
]}

Tong, Jiejuan ^{[1
]}

Liu, Weirong ^{[3
]}

Wang, Yong ^{[3
]}

机构：

[1] Tsinghua Univ, Inst Nucl & New Energy Technol, Collaborat Innovat Ctr Adv Nucl Energy Technol, Key Lab Adv Reactor Engn & Safety,Minist Educ, Beijing 100084, Peoples R China

[2] Royal Inst Technol KTH, Div Nucl Power Safety, SE-10691 Stockholm, Sweden

[3] China Nucl Power Engn Co Ltd, Beijing 100840, Peoples R China

来源：

SCIENCE AND TECHNOLOGY OF NUCLEAR INSTALLATIONS | 2018年 / 2018卷

基金：

中国国家自然科学基金;

关键词：

PRIMARY LOOP; DUST;

D O I：

10.1155/2018/5808352

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

After the successful construction and operation experience of the 10 MW high-temperature gas-cooled reactor (HTR-10), a high-temperature gas-cooled pebble-bed modular (HTR-PM) demonstration plant is under construction in Shidao Bay, Rongcheng City, Shandong province, China. An online gross gamma monitoring instrument has been designed and placed at the exit of the helium purification system (HPS) of HTR-PM and is used to detect the activity concentration in the primary circuit after purification. The source terms in the primary loop of HTR-PM and the helium purification process were described. The detailed configuration of the gross gamma monitoring instrument was presented in detail. The Monte Carlo method was used to simulate the detection efficiency of the monitoring system. Since the actual source terms in the primary loop of HTR-PM may be different than the current design values, a sensitivity analysis of the detection efficiency was implemented based on different relative proportions of the nuclides. The accuracy and resolution of the NaI(Tl) detector were discussed as well.

引用

页数：12