Environmental radioactivity level at

Environmental radioactivity level at a mantle factory in eastern Zhejiang

The γ radiation level, alpha potential energy of thoron and alpha surface contamination level at amantle factory in the east of Zhejiang Province are reported. The measured results show that the additional annual ef-fective dose equivalent absorbed by the worker in some workshops of the factory was higher than 15mSv-management limit. The alpha surface contamination on the workers' hands in some workshops was 10 timesmore than the management limit of National Standard (0.04 Bq/cm2). The mantle factory's main danger to body wasinternal irradiation of α rays from thoron aerosol.

作 者： YE Ji-Da ZENG Guang-Jian WU Zong-mei Liu Hong-shi NI Shi-Ying   作者单位： Zhejiang Province Environmental Radiation Monitoring Center, Hangzhou 310012  刊 名： 核技术(英文版)  SCI 英文刊名： NUCLEAR SCIENCE AND TECHNIQUES  年，卷(期)： 2003 14(4)  分类号： X591  关键词： Mantle factory   γ radiation level   Alpha surface contamination   Thorium   Thoron   Effective doseequivalent  

【Environmental radioactivity level at】相关文章：

关于环保的英语作文素材Environmental protection04-25

英语六级作文：Environmental Protection08-09

IB课程和A-Level课程又什么区别？08-11