核电站严重事故下氢气浓度测量装置  

Device for Measuring Hydrogen Concentration in Containment during Severe Accident

作　　者：罗沙[1] 王少波[1] 覃亮[1] 庞锋[1] 

机构地区：[1]中国船舶重工集团公司第七一八研究所,河北邯郸056027

出　　处：《舰船防化》2013年第4期1-5,共5页

摘　　要：福岛事故中氢气爆炸对全球核电厂安全提出了严峻挑战。因此,加强对安全壳内氢气浓度的监测变得非常重要。为了提高中国在役和在建核电厂的核安全水平,中国国家核安全局颁布了《福岛核事故后核电厂改进行动通用技术要求》。本文以通用技术要求为依据,具体分析了严重事故后氢气监测系统的功能和设备要求、存储和布置要求,同时对两种安全壳氢气浓度测量技术,即直接测量技术和抽出式测量技术进行了论述和比较。本文特别提出,中船重工第七一八研究所采用直接测量技术,成功研制出适用于严重事故下使用的CH-15型安全壳内氢气浓度测量装置。氢气传感器具有自主知识产权,采用催化原理,安装在安全壳内。装置特点是测量范围宽、测量精度高,可实现多点连续测量。该装置组成简单、体积小、能耗低,适用于国内外已运行和在建核电厂进行技术改进及加装。The hydrogen explosion in Fukushima nuclear accident seriously challenged the safety of nuclear power plants in the world. Therefore, strengthening hydrogen concentration measurement in containment has become very important. To raise the nuclear safety level of in-service and under construction nuclear power plants in China, based on a document which was issued by the National Nuclear Safety Administration of China （NNSA, 2012）, the function requirements, components, storage, and arrangement outlines of the hydrogen monitoring system after a severe accident was thoroughly analyzed in this article. Besides, two kinds of techniques for hydrogen concentration measurement in containment, respectively for direct measuring method and gas sampling measuring method, were also discussed and compared. Notably, based on the direct measuring method, the purification equipment research institute of CSIC successfully developed the CH-15 type hydrogen concentration measuring device that suitable for used in severe accident. The hydrogen sensor, with independently intellectual property rights, is based on catalytic principles and installed inside the containment. It has many unique characteristics, such as wide measurement range, high measurement accuracy, and is capable of continuous measurement with multiple points. This device has simple structure and small size, with low energy consumption, so it is very suitable for being installed in the in-service and under construction nuclear power plants in China and abroad.

关 键 词：严重事故 氢气 测量 催化原理 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]