重水堆压力管长度测量及数据分析

Heavy Water Reactor Pressure Tube Elongation Measurement and Data Analysis

利用数理统计方法对装换料机Z轴编码器读数(即压力管伸长量)和在役检查2种测量方法测得的压力管的长度数据进行分析。结果表明,2种测量方法得到的数据是有效的,从压力管伸长的角度预测压力管使用寿命可以满足设计要求,并具备延寿的条件。

In this paper, mathematical statics method is used to analyze pressure tubes＇ elongation data acquired from two methods： refueling machine＇s encoder in Z direction and in-service inspection （ultrasonic）. The result show that the data acquired from two methods is valid, and predict that the pressure tubes＇ service life are satisfied with design values from the elongation view, even the service life can prolong.