核电厂重要厂用水管道外加电流阴极保护系统保护电位不达标原因分析与改进.pdfVIP

经验交流 Experience Exchange 核电厂重要厂用水管道外加电流阴极保护 系统保护电位不达标原因分析与改进 刘 聪 吴清兴 （海南核电有限公司，海南 海口570 100 ） 摘 要：国内某核电厂重要厂用水管道内壁采用外加电流阴极保护和重防腐涂层联合防护。 外加电流阴极保护系统调试过程中出现保护电位不满足验收要求问题，论文结合外加电流阴极保 护系统的组成、原理与布置，对影响保护电位的主要因素进行了分析，并根据分析结果开展了可 行性对策研究，最终通过实施有效改进方案，确保了阴极保护系统正常运行。 关键词： 重要厂用水系统 外加电流阴极保护系统 保护电位 中图分类号： 文献标识码： DOI：10.13726/j .cnki.11-2706/tq.2017.04.042.07 TM623.4 A A Cause Analysis and Improvement of Protection Potential not up to the Standard of Impressed Current Cathodic Protection System in Nuclear Power Plant LIU Cong, WU Qing-xing (Hainan Nuclear Power Co., Ltd. Haikou 570 100, China) 术 技 Abstract: Impressed Current Cathodic Protection （ICCP ）and heavy anti-corrosion coating are j ointly applied to protect the essential service water pipeline of a nuclear power plant. In order to find out the cause why the protective potential cannot be up to the standard which appeared in the process of debugging, this paper gave an introduction of the composition, principle and layout of ICCP system and the key factors affecting the protective potential were also being analyzed. To ensure the normal operation of the ICCP system, some feasible countermeasures were improvement based on the analysis results, and an effective was achieved finally. Key words: essential service water system; impressed current cathodic protection system; protective potential 0 引言