【摘要】 介绍了核动力反应堆压力系数测量方法。该方法利用反应堆压力变化会引起反应性变化的特性,用数字反应性仪和压力表测量多个温度测点的压力系数,拟合得到压力系数曲线,即可获得反应堆各温度点的压力系数值;还利用MCNP程序作压力系数校核计算,计算表明,校核计算结果与试验结果符合得很好。获得的反应堆压力系数值,用于指导反应堆运行及试验,对反应堆安全有重要意义。更多还原

【Abstract】 The paper introduces the measurement method of pressure coefficient of the core in the nuclear power reactor.The method uses the feature of reactivity change with pressure in the reactor.The pressure coefficients of several temperature points are measured by using digital reactivity meter and pressure gauge.The curve of pressure coefficient is fitting through the measurement values,from which all of the pressure coefficient can be provided.Also pressure coefficient is calculated by using MCNP program,which shows that the calculation results are correspondent to experimental results of pressure coefficient in the core.The values of pressure coefficient can be used to instruct the operation and experiment,which are important to the safety of the reactor.更多还原