接触式中子毒物板厚度检测系统设计

Design of Contact-Type Thickness Detection System for Neutron Poison Plate

反应堆乏燃料贮存格架由多个贮存管组成。贮存管是采用含有中子毒物的板状材料经过钣金、焊接等方式加工制成的方管形结构,中子毒物板厚度尺寸是贮存格架的重要参数,生产过程中需要严格准确测量。采用接触式测量方法,结合现代自动检测控制技术和数据库技术,完成了中子毒物板厚度检测系统设计。设计的检测系统具备一键操作功能,可自动完成中子毒物板厚度尺寸检测、记录、统计等工作。

Spent fuel storage grid(storage grid), as one of the important equipments in the storage system of spent fuels, is placed in the spent fuel pool. To improve the storage capability per pool area for spent fuel, plate-like materials which contain some neutron poisons(such as boron aluminum and boron stainless steel) are made into quadrate storage tubes by sheet metal process and welding. The storage grid is usually made up of multiple storage tubes. The thickness of neutron poison plate which influences the safety of spent fuel storage is an important parameter of storage grid and should be measured accurately in the manufacturing process. In this paper, the contact-type measuring method is employed to design the thickness detection system for neutron poison plate by FEMA technological analysis, combining with the modern automatic detection and control technology and database technology. The designed thickness detection system, supporting one button control, can automatically finish the process of thickness detection, recording and statistic for the neutron poison plate, and improving the detecting efficiency and quality.