硝酸铀酰均匀堆堆芯物理设计及特性
首发时间:2020-09-08
摘要:论文提出了一种新型以硝酸铀酰溶液为燃料的反应堆(Uranyl Nitrate Solution Nuclear Reactor, UNSNR)堆芯设计,并采用蒙特卡罗方法程序分析了UNSNR堆芯中子能谱和功率分布、控制转鼓特性及临界安全等。结果表明,不同硝酸铀酰浓度下堆芯存在不同的中子慢化分区;在转鼓小角度下堆芯中子能谱偏硬,转鼓大角度下,堆芯径向功率迅速下降;在转鼓事故状况下,堆芯依然能够安全停堆。该堆芯结合了均匀堆的优势和空间堆转鼓的控制方式,对微型均匀堆堆芯设计和研究提供参考。
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Design and Core Characteristic of Uranyl Nitrate Solution Nuclear Reactor
Abstract:A novel nuclear reactor core using uranyl nitrate solution as fuel (Uranyl Nitrate Solution Nuclear Reactor, UNSNR) was designed and analyzed by Monte Carlo method. The uranyl nitrate concentration and enrichment, control drum worth effects on nuclear core power distribution and core criticality safety were investigated. The results show that different uranyl nitrate solution concentrations lead to different slowing down partition. Small angles of control drum lead to energy spectrum hardening harden of the core and big angles lead to the quickly decline of radial power. The UNSNR can shut down when control drum accident occurs. Concept of this reactor core combines homogeneous reactor core design with space reactor core control. This work can provide a reference for the design and development of micro homogeneous nuclear reactor.
Keywords: Uranyl Nitrate Core Design Homogeneous Reactor Control drum Physical Analysis
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