研究性重水堆(HWRR)UO_2堆芯工程启动

THE COMMISSIONING OF THE MAIN LOOP AND RAISING OF REACTOR POWER FOR HWRR WITH UO_2 CLUSTER FUEL ASSEMBLY

摘要: <正> 研究性重水反应堆于1983年4月改为UO_2堆芯。UO_2堆芯的工程启动实验只进行了与堆芯变更有关的项目,主要是:1.工艺管流通试验;2.主回路特性试验;3.提升功率及高功率连续考验。一、工艺管流通试验反应堆主回路入堆重水除大部分进入工艺管外,还有一部分重水从工艺管与内壳底部插座之间的缝隙中漏出。漏流率η按设计要求约为6％。随着反应堆运行以及装卸料次数

Abstract: This article describes the determination of the minimum flow of the processtubes, characteristic test of the mainloop and test of raising reactor power levelafter changing HWRR core into UO_2 fuel elements. According to these test resultsthe threshold value of the scram for D_2O inlet pressure of the core and themaximum permissible thermal power for various conditions are determined.