瓦里安Clinac 21EX直线加速器GFIL连锁的故障分析与维修

Analysis and Maintenance of GFIL Interlock Faults in Varian Clinac 21EX Linear Accelerator

本文对本院瓦里安Clinac 21EX直线加速器9年内发生的GFIL连锁故障进行了总结。GFIL连锁故障的发生主要是由冷端Power Supply板、热端小电源板、热端Hot Deck Filament Power supply板、热端backplane板以及机架内Patch Panel板故障引起的。故障发生后,控制台会出现红色GFIL连锁警报,据详细的硬件状态分析故障原因并进行故障排除处理。本文阐述的5种故障类型基本囊括了与GFIL连锁相关的大部分硬件,根据硬件原理指出了快速有效的故障解决办法,为直线加速器维修提供参考。

This paper summarized and analyzed the GFIL interlock faults that had occurred in our hospital’s Varian Clinac 21EX linear accelerator over the past 9 years.The occurrence of GFIL interlock faults was mainly caused by faults of the power supply board on the cold end,the small power supply board on the hot end,the hot deck filament power supply board on the hot end,the backplane board of the hot end,and patch panel board in the rack.After a fault occurs,the console displayed a red GFIL interlocking alarm,which will continuously flash or remain on.The fault cause and handling method were further analyzed based on the detailed hardware status.The five types of faults described in this paper basically cover most of the hardware related to GFIL interlocking,and provided fast and effective fault solutions based on hardware principles,in order to provide reference for linear accelerator maintenance engineers.