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EPR机组再生式热交换器的调试及现场监督 预览

Commissioning and on-Site Supervision of Regenerative Heat Exchanger of EPR Units
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摘要 介绍了EPR机组再生式热交换器RCV6220EX的特点和作用,结合热交换器的特点、电厂技术规格书和法规导则要求,对调试中出现的泄漏问题进行了分析和讨论,对维修和改造情况提出了关注要点。RCV6220EX直接参与一回路水装量的平衡调节,其泄漏将直接导致一回路泄漏率增加,影响机组的正常运行。RCV6220EX发生两次泄漏后,非定量泄漏率增加,一回路总泄漏率增加,电厂采取了临时封堵及结构改造的方法进行处理。结合法规要求,指出监管要求和主要关注重点。 This paper introduces the characteristics and functions of regenerative heat exchanger RCV6220EX of EPR units.Combining with the characteristics of the heat exchanger,technology specifications and regulation guideline,the leakage problems appeared during commissioning are analyzed and discussed,and some key concerns are proposed with the experience during maintenance and renovation.RCV6220EX directly participates in the balance regulation of water charge in the primary circuit.Its leakage will lead to an increase leakage rate in the primary circuit and affect the normal operation of the unit.After two leakages of RCV6220EX, the non-quantified leakage rate and the total leakage rate of the primary circuit increase.The power plant adopts temporary plugging and structural modification to handle it.Combining with the requirements of laws and regulations,the regulatory requirements and main concerns are clarified.
作者 项建英 王进 杨凯 Xiang Jianying;Wang Jin;Yang Kai(South China Regional Office,MEE,Shenzhen 518034,China)
出处 《核安全》 2019年第3期51-55,共5页 Nuclear Safety
关键词 RCV6220EX 泄漏率 技术规格书 现场监督 RCV6220EX leakage rate technical specifications on-site supervision
作者简介 项建英(1985—),男,江西上饶人,博士,材料科学与工程专业,现主要从事核安全监督管理工作.
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