新型U_3Si_2-Al燃料组件的工程验证试验研究

Partial Engineering Validate Test Investigation of New U_3Si_2-Al Fuel Subassembly

新研制的U3Si2-Al板状弥散型燃料组件结构复杂,国内对该燃料组件的结构材料、制造工艺、力学性能、运行特性等均缺少经验及评定标准。为得到该新型燃料组件的各种性能参数,开展了燃料包壳及结构材料的力学性能试验、燃料板及包壳材料的热物性及热稳定性试验、燃料板的力学性能试验、燃料板的正电子湮灭寿命试验、燃料组件的水力冲刷和解体试验等一系列的工程验证试验和专项研究,得到的各项实验数据为燃料组件的结构设计、可靠性分析、安全审评提供了重要依据,也为燃料组件的加工制造、堆内使用管理提供了借鉴。

The structure of the new U3Si2-Al fuel plates subassembly is very complex,and experience and criterion of its structural material,manufacture technicality,mechanics capability and running property are lack.To attain various capability parameters of this new fuel subassembly,a series of engineering validate test and investigation were developed,concluding mechanics capability test of fuel blanket and structural material,thermal property and thermal stability test of fuel plates and blanket material,mechanics capability test of fuel plates,positron annihilate life test and waterpower erode and disassembly test of fuel subassembly,etc.The attained various test data provide important gist on structural design,dependability analysis and safety auditing of fuel subassembly,and provide reference on machining manufacture,reactor use and manager of fuel subassembly.