LNG储罐水压试验时内罐防腐控制探讨
Corrosion Control of Inner Tank of LNG Storage Tank during Hydraulic Pressure Testing
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- DOI:
- 作者:
- 刘吉飞, 程久欢, 祝晓丹, 叶忠志
LIU Ji-fei, CHENG Jiu-huan, ZHU Xiao-dan, YE Zhong-zhi
- 作者单位:
- 海洋石油工程股份有限公司, 天津 300451
China National Offshore Petroleum Engineering Co., Ltd., Tianjin 300451, China
- 关键词:
- LNG储罐;水压试验;防腐
LNG storage tank;hydraulic pressure test;anticorrosion
- 摘要:
- 为了防止LNG储罐在水压试验时内罐的腐蚀,内罐壁板和底板一般采用涂低锌硅酸盐底漆、外加电流保护以及焊缝覆盖等3种防腐方法。文章从操作性、防腐效果、经济性等方面对以上3种常用的防腐方法进行了分析比较,在此基础上提出了内罐板材涂低锌硅酸盐底漆是一种比较实用的防腐方法。
For preventing corrosion of the inner tank of a LNG tank during hydraulic pressure testing, there are generally three kinds of anticorrosion methods i.e. inner tank wall and bottom sheets coated with low zinc silicate as primer, impressed current protection and weld covered with anticorrosion tape. Comparative analysis on operability, anticorrosion effect and economy of these methods are made and it is then concluded that the method of tank wall and bottom sheets coated with low zinc silicate as primer is a considerably practical method.2009,06(06): 36-38 收稿日期：2008-12-23分类号：TE988作者简介：刘吉飞（1974-），男，内蒙古赤峰人，工程师，1998年毕业于中国石油大学（华东），现从事海洋石油开发工程总体布置、管道布置等设计工作。参考文献：
[1] BS 7777－1993， Flat-bottomed, vertical, cylindrical storage tanks forlow temperature service[S].
[2] API 620-2002，Design and Construction of Large, Welded, Low-Pressure Storage Tanks[S].
[3] DNV RP B401-2005 Cathodic protection design[S].