铀氢化锆元件小型动力堆应用可行性分析

Feasibility Analysis for Application of Compact Power Reactor Fuelled with Uranium Zirconium Hydride

介绍了铀氢化锆燃料元件的主要性能和特点(尤其是热物理性能和堆内辐照性能),以及将铀氢化锆元件应用于动力堆所完成的一些研究概况。在此基础上,对铀氢化锆元件小型动力堆的技术可行性进行了论证和分析。结果表明:将铀氢化锆元件作为小型动力堆元件在燃料元件方面不存在严重的技术问题;使用细棒铀氢化锆元件的小型动力堆仍有较大的瞬发负温度系数,具有一定的固有安全性。

This paper introduced the main properties and characteristics of the uranium zirconium hydride fuel element（especially its thermo-physical properties and in-core irradiation performance） as well as some work on the power reactor with uranium zirconium hydride element. And then, the feasibility of uranium zirconium hydride power reactor was studied. The basic conclusions were obtained： There is no severe technical problem in the uranium zirconium hydride fuel elements used for compact power reactor; and there is still a biggish prompt negative temperature coefficient in the compact power reactors with thin rod uranium-zirconium hydride element, in other words, the inherent safety can be retained on a certain extent.