球床包层聚变—裂变混合堆热工安全分析

球床包层混合堆与板状元件包层混合堆相比较，前者在核燃料生产和安全方面可能具有更多的优越性。本应用ＴＨＥＲＭＩＸ程序和辅助程序对我国开发的托卡马克堆芯氮气冷却球床包层聚变－裂变合堆的包层进行了热工计算。计算中考虑了不同的燃料球材料及稳态，卸压和断流事故工况。计算结果表明，只要选用合适的燃料球材料和设置适当的控制保护系统，具有快速卸料罐的托卡马克堆芯氦气包层聚变－裂变混合堆的概念设计在安全上的可行的。

Thermal Safety Analysis for Pebble Bed BlanketFusion Fission Hybrid Reactor

Pebble bed blanket hybrid reactor may have more advantages than slab element blanket hybrid reactor in nuclear fuel production and nuclear safety.In this paper thermo hydraulic calculations of the blanket in the Tokamak helium cooling pebble bed blanket fusion fission hybrid reactor developed in China are carried out using the Code THERMIX and auxiliary code .In the calculations different fuel pebble material and steady state,depressurization and total loss of flow accident conditions are included.The results demonstrate that the conceptual design of the Tokamak helium cooling pebble bed blanket fusion fission hybrid reactor with dump tank is feasible and safe enough only if the suitble fuel pebble material is selected and the suitble control system and protection system are established.In this paper some recommendations for due conceptual design are also presented.