KIR(Loose Parts Monitoring System for Nuclear Power Plant) is always to monitor loose parts、drop parts, external parts in RPV and SG and is regularly monitor vibration of RPV and in-pile member.IN order to guaranting the realness of the signals ,the mounting of the sensor and the debugging of the signal needs to be taken standardly. Core of the article is composition of KIR ,install of probe, the way of debug.%KIR(核电厂松脱部件监测系统）是用于在线监测核反应堆压力容器和蒸汽发生器内可能出现的松动件、脱落件和外来件,周期性监测反应堆压力容器和堆内构件的振动。为保证信号的真实性，KIR系统需要按照规范进行探头的安装及机柜信号的调试。本文重点介绍KIR系统的组成，探头的安装、调试方法。
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