核动力反应堆零功率物理试验的多普勒发热点测量试验

Experiment of Doppler Heating Starting Point Measurement for Zero Power Physical Test in the Nuclear Power Reactor

为了定量确定零功率物理试验功率的上限,在反应堆零功率物理试验中,利用数字反应性仪测量多普勒发热点,以确定试验功率的范围、保证试验精度。叙述了本次多普勒发热点测量试验的原理、试验仪器、试验方法、试验结果及数据处理方法等,试验结果表明:利用数字反应性仪测得的反应性经过修正后可以准确地判断多普勒发热点,可为后续物理试验提供参考。

In order to determine the upper limit of power, calibrate the range of power and assure testing accuracy, Doppler heating starting point is measured using digital reactivity meter during zero power physical experiment in the reactor. The paper describes the experimental theory, instrument, methods, results and data processing methods. The experimental results show that Doppler heating starting point can be determined by modified reactivity values measured by digital reactivity meter. The experience can be used m the following physical experiment.