华龙#1机组严重事故预防缓解系统大修计划安排分析

Analysis of the Plan and Arrangement for the Overhaul of the Serious Accident Prevention and Mitigation System of Hualong Unit 1

福清核电华龙#1机组设计了完善的严重事故预防和缓解措施,采用能动和非能动相结合的先进理念,提高了核安全三大控制功能的可靠性。在华龙#1机组的设计中,用于预防与缓解严重事故的系统包括堆腔注水冷却系统(CIS)、非能动安全壳热量导出系统(PCS)、二次侧非能动余热排出系统(PRS)等。在遵守华龙#1机组技术规范要求的前提下,对以上系统在大修计划中主要工作窗口进行分析和介绍,为后续华龙机组大修计划工作提供参考。

Fuqing Nuclear Power Hualong#1 unit has designed comprehensive serious accident prevention and mitigation measures,and adopts the advanced concept of combining active and passive to increase the reliability of the three major control functions of nuclear safety.In the design of Hualong No.1 unit,the systems used to prevent and mitigate severe accidents include reactor cavity water injection cooling system(CIS),passive containment heat export system(PCS),secondary side passive residual heat removal system(PRS),etc.On the premise of complying with the requirements of Hualong#1 unit technical specifications,the main working windows of the above systems in the overhaul plan were analyzed and introduced to provide reference for the follow-up Hualong unit overhaul plan.