压水堆一回路颗粒性腐蚀产物沉积机理的实验研究  

Experimental Study on Deposition Mechanism of Particle-like Corrosion Product in Primary Circuit of PWR

作　　者：马忠英[1] 陆道纲[1] 袁博[1] 吴立村[1] 陈义学[1] 

机构地区：[1]华北电力大学核科学与工程学院,北京102206

出　　处：《原子能科学技术》2015年第12期2239-2244,共6页Atomic Energy Science and Technology

基　　金：国家科技重大专项资助项目(2011ZX06004-017);ITER专项基金资助项目(2014GB119000)

摘　　要：一回路腐蚀产物在传热管内表面的沉积对压水堆核电厂安全运行和放射性产物屏蔽有非常不利的影响。为研究一回路腐蚀产物在传热管中的沉积机理,搭建了一回路腐蚀产物沉积机理研究实验系统。实验研究了颗粒性腐蚀产物Fe_3O_4在传热管内的沉积分布,并对比分析了不同弯管半径、pH值和粒径对颗粒沉积的影响。实验得到了颗粒状腐蚀产物在管内分布的规律,给出了最大沉积量所对应的pH值和粒径范围,可为压水堆化学控制提供参考。The deposition of particle-like corrosion products on the surface of heat transfer tube in the primary circuit has negative effects on safety operation and radiation protection of the system.An experimental system was adopted to study deposition mechanism of particle-like corrosion products in the primary circuit of PWR.The deposition distribution of particle-like corrosion product Fe_3O_4 in heat transfer tube was studied.The effects of tube radius,pH value and particle radius on deposition were compared.Through the experiment,the rules of deposition distribution in tube were founded.The ranges of pH value and particle radius for maximum deposition rate were given,which can be applied as a reference for PWR chemical controls.

关 键 词：压水堆 腐蚀产物 沉积机理 PH值 

分 类 号：TL944[核科学技术—辐射防护及环境保护]