核电站高压加热器水室隔板穿孔原因分析

腐蚀科学与防护技术, 2012, 24(3): 239-244.

核电站高压加热器水室隔板穿孔原因分析

高俊 , 张维 , 刘忠 , 张忠伟 , 刘春波 , 郑玉贵

1.1. 核电秦山联营有限公司海盐314300

2.2. 苏州热工研究院有限公司苏州215004

3.3. 中国科学院金属研究所沈阳110016>

1.1. CNNC Nuclear Power Qinshan Joint Venture Company Limited, Haiyan 314300

2.2. Suzhou Nuclear Power Research Institute, Suzhou 215004

3.3. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016>

关键词：高压加热器 , perforation corrosion , finite element

Failure Analysis ofWater Box of NPP High Pressure Heater

GAO Dun , ZHANG Wei , LIU Zhong , ZHANG Zhong-Wei , LIU Chun-Bei , ZHENG Yu-Gui

Keywords： high pressure heater , 腐蚀穿孔 , 有限元

某核电站在运行8 年以后, 高压加热器水室隔板发生腐蚀穿孔. 本文从失效有关的因素如水室结构、水室用材料和水化学等入手, 分析了发生穿孔的原因, 同时采用有限元方法分析流体相关因素, 得出发生失效的原因是流动加速腐蚀.

After 8 years operation, a clapboard in water box of high pressure heater experienced perforation corrosion in a nuclear power plant. The structure, water chemistry and material of the water box are analyzed so that to trace out the mechanism of corrosion failure. In the meanwhile, the finite element method is used to ascertain the factors influencing corrosion failure. At last, the reason for failure is given, which is flow accelerated corrosion.

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