核反应堆流量旁通板拆除策略及专用工装设计  

Design of Special Tool and Removal Strategy of Flow By-pass Plate of Reactor Inner Component

作　　者：陆少威 戚宏昶 范伟丰 聂文哲 何子健 LU Shaowei;QI Hongcang;FAN Weifeng;NIE Wenzhe;HE Zijian(CNNP Nuclear Power Operations Management Co.,Ltd.,Jiaxing 314300,China)

机构地区：[1]中核核电运行管理有限公司,浙江嘉兴314300

出　　处：《原子能科学技术》2021年第S02期358-363,共6页Atomic Energy Science and Technology

基　　金：中核集团“青年英才”项目。

摘　　要：随着核反应堆机组的持续运行,堆内构件等一回路设备部件逐渐老化,关键重要设备可靠性降低,需对设备进行维修作业。由于核技术的特殊性,反应堆一旦启用,堆内构件等一回路设备具有高放射性,必须使用特殊的维修策略及专用工装进行维修处理。本文针对压水堆核电站现场,通过风险分析制定高放射性环境下的维修策略,设计并制作水下远距离操作专用工装,并成功应用于核电维修现场。堆内构件流量旁通板拆除工作的成功实施验证了本文维修策略的合理性及专用工装的可靠性,为核电站高放射性环境下的维修技术提供了经验和借鉴。With the continuous operation of nuclear reactor,primary equipment and components such as internal components of the reactor gradually aging,and the reliability of key important equipment decreases,so it is necessary to replace or repair the relevant parts of the equipment.Due to the particularity of nuclear technology,once the reactor is activated,the equipment of the reactor internal components is highly radioactive,and special maintenance strategies and tools must be used for maintenance treatment.In this paper,combining with the pressurized water reactor nuclear power plant maintenance site,through systematic and comprehensive risk analysis for high radioactive environment maintenance strategy,special tools for underwater long-distance operation were designed and manufactured,which was successfully applied to the nuclear power maintenance site.The successful removal of the flow by-pass plate of the reactor component verifies the rationality of this maintenance strategy and the reliability of the special tools for underwater long-distance operation,which provides experience and reference for the maintenance technology of nuclear power plant in high radioactive environment.

关 键 词：高放射性环境 维修策略 水下远距离操作 专用工装 

分 类 号：TL387[核科学技术—核技术及应用]