采用堆芯外探测器监测堆内功率分布

Monitoring of In-Core Power Distribution by Ex-Core Detectors

堆芯外电离室是大多数反应堆上唯一的实时核测量探头。本文讨论了由堆芯外探测器监测堆内功率分布的必要性、可能性,提出了基于谐波综合法、探测器空间响应函数的由堆芯外探测器监测堆内功率分布的方法及其技术难点、关键技术。在低温供热堆、高温气冷堆上的初步数值验证结果表明,该方法是可行的。

For most reactors,the ex-core ion-chambers are the only real-time nuclear detectors.The necessity and the possibility to monitor the in-core power distribution are discussed in this paper,and the methodology to monitor the in-core power distribution via ex-core detector readings based on the harmonics synthesis method and detector spatial response function are proposed,and the preliminary numerical results are presented for the low-temperature heating reactors and high-temperature gas-cooled reactors,therefore the feasibility is demonstrated.