核电厂聚乙烯管道设计方法及标准简介

随着聚乙烯管道在三门核电厂、大亚湾核电厂中的试应用成功，大量的新建核电厂及核电厂改造项目均将聚乙烯管道作为海水冷却水管道系统的首选管材，自主研制核电厂聚乙烯管技术标准迫在眉睫。本文介绍了核电聚乙烯管道的发展历史和应用现状，对比了核安全3级聚乙烯管道和非核安全相关聚乙烯管道、城市燃气与给水聚乙烯管道技术标准的设计方法及适用范围，探讨了中国目前聚乙烯管技术标准与核3级聚乙烯管道技术标准的差异与差距，为核电厂聚乙烯管道的设计制造与标准研制提供参考。

Introduction of Design Methods and Standards of Polyethylene Pipes for Nuclear Power Plants

With a successful field application of polyethylene(PE)pipes in the Sanmen and Daya Bay nuclear power plants,PE pipes have been taken as the first choice for the cooling water systems in a large number of construction or renovation projects for new nuclear power plant. There is extremely urgent requirement for the development of technical standards for PE pipes in nuclear power plants. This paper introduced the history and application status of PE pipes in nuclear power plants. The design method and scope of ASME Class 3 PE pipes standards were compared with those of the relevant PE pipes without a nuclear safety standard including the gaseous fuels PE pipes and water supply PE pipes. The differences and gaps between Chinese current PE pipe technology standards and ASME Class 3 PE pipe technology standards were discussed. This paper provides a reference for the design,manufacture and standard development of PE pipes in nuclear power plants.