核安全3级高密度聚乙烯管道热熔对接工艺实践  

Practice on Fusion-jointing Procedure of High Density Polyethylene Piping System with Nuclear Safety Class 3

作　　者：郑东宏 李保标 张旭[1] 尹保红 龚圣捷[2] Zheng Donghong;Li Baobiao;Zhang Xu;Yin Baohong;Gong Shengjie(Shanghai Nuclear Engineering Research&Design Institute Co.,Ltd.,Shanghai 200233,China;School of Nuclear Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海核工程研究设计院股份有限公司,上海200233 [2]上海交通大学核科学与工程学院,上海200240

出　　处：《发电设备》2024年第2期104-108,114,共6页Power Equipment

基　　金：上海市青年科技英才扬帆资助项目(21KY15)。

摘　　要：高密度聚乙烯(HDPE)管道因具有良好的耐海水腐蚀能力,在压水堆核电厂服务水系统和部分设备冷却水系统核安全3级管道中逐渐得到了应用。为了有效提升HDPE管道热熔对接工艺的质量,根据ASME BPVC规范,对核安全3级HDPE管道的材质性能、热熔对接工艺评定、热熔对接工艺实践等进行了分析。通过合理控制热熔对接压力、端面吸热压力、端面加压加热时间、最小吸热时间等参数,可以显著提升HDPE管道热熔对接工艺的质量。With a well corrosion resistance to seawater,high density polyethylene(HDPE) has been gradually applied in service water system or some equipment cooling water system with nuclear safety class 3 piping system requirements in pressurized water reactor nuclear power plants.In order to effectively improve the quality of HDPE piping fusion-jointing procedure,according to ASME BPVC standards,analyses were conducted on the material properties,fusion-jointing procedure qualification and practice of HDPE piping system with nuclear safety class 3.The quality of HDPE piping fusion-jointing procedure can be significantly improved through appropriately controlling following parameters,such as the fusion-jointing pressure during formation and cooling down,the end face pressure during continual heating,the requested pressurization and heating time of end face,and the shortest requested time of continual heating.

关 键 词：核电站 管道 HDPE 热熔对接 工艺评定 

分 类 号：TM623.4[电气工程—电力系统及自动化]