WWER堆型核电特种门气密性在役检测技术  

The Technology of In-service Measurement of Air-tightness for Special Gates in WWER Nuclear Plants

作　　者：戴文霞 DAI Wenxia(China Nuclear Industry Huaxing Construction Co.,Ltd.,Nanjing 210019,China)

机构地区：[1]中国核工业华兴建设有限公司,江苏南京210019

出　　处：《电工技术》2024年第15期232-236,共5页Electric Engineering

摘　　要：田湾核电站3、4号机组是自福岛核电事故后我国开建的首个核电项目,对核岛厂房特种电动大门提出了更加严格的要求。为满足3、4号机组WWER堆型核岛特种门的使用技术要求,在新核燃料和固态放射性废料贮存厂房(UKT)、应急发电机厂房(UBS)、核服务厂房(UKC)设计室外边界门,门体加工前特别研制了高等级多功能、超大尺寸(4700 mm×7440 mm、重10 t)的特种电动铰链门,产品具备抗震1I、抗冲击波S、气压差最高达到200 Pa时气密性控制在0.1~0.5 nm^(3)/h以内等功能要求。但目前对于该功能要求暂无标准规范和试验方法,因此联合生产厂家专门研制了满足该功能要求的定制的密封条和在役检测技术,并通过多次专项试验验证,实现了该功能要求。该产品在运行维护成本及价格上比法国博梅尔特推出的产品要求低,比田湾1期电动铰链门成本要低得多,具有显著的价格优势,多功能应用优势,替代进口、扩大出口的竞争优势,为核电站的正常运行提供了有力保障,减少了核电站的投入运行成本。Unit 3 and Unit 4 of Tianwan nuclear power plant is the first nuclear power project built in China after the Fukushima nuclear power accident,and more rigorous requirements are put forward about electric gates inside and outside nuclear island buildings.In order to meet the technical requirements about operating WWER nuclear island building gates of Units 3 and 4,before processing the gate body of outside boundary gates of the new nuclear fuel and solid radioactive waste storage building(UKT),the emergency generator building(UBS),and the nuclear service building(UKC),the cutting-edge,multi-functional,extra-large size(4700 mm×7440 mm,weight 10 t)hinged gate with drive were developed in purpose.Hinged gate with drive of this kind enjoys functional requirements such as seismic 1I,shock wave resistance S,air tightness controlled within 0.1 nm^(3)/h to 0.5 nm^(3)/h when the pressure difference reaches up to 200 Pa and the forth.In view of the functional requirements,the state has no standard specifications and test methods in this respect,so the joint manufacturer has specially developed a customized seal and in-service measurement technology to meet the functional requirements,and has verified the functional requirements through special tests many times.And the operation and maintenance costs and prices are lower than the products launched by France′s Bomelt,and the cost is much lower than that of Tianwan phase 1 electric hinged doors.It has formed a significant price advantage,multi-functional application advantage and competitive advantage of replacing import and expanding export,which provides a strong guarantee for the normal operation of nuclear power plants and reduces the operation cost of them.

关 键 词：铰链门 气密性 专项试验 

分 类 号：TM623[电气工程—电力系统及自动化]