A Proposed Core Catcher System and Thermite Experimental Results  

作　　者：H.Y. Kim J.H. Kim K.S. Ha J.H. Song J.H. Park 

机构地区：[1]Thermal Hydraulics Safety Research Division, Korea Atomic Energy Research Institute, Daejeon 305-353, Korea

出　　处：《Journal of Energy and Power Engineering》2011年第11期1005-1014,共10页能源与动力工程（美国大卫英文）

摘　　要：To prevent direct contact of the melt and basemat concrete of the cavity in a postulated core melt accident, a core catcher concept is suggested. Upon ablation of the sacrificial layer on top of the core catcher while molten core material is discharged, a mixture of water and gas is injected from below. It is expected that a simultaneous injection of water and gas could prevent a possible steam explosion/spike and also suppress the rapid release of steam which might result in fast over-pressurization of the containment. A test facility for the core catcher using a thermite reaction technique for the generation of the melt was designed and constructed at Korea Atomic Energy Research Institute （KAERI）. The first series of tests were performed by using a mixture of Al, Fe2O3, and CaO as a stimulant. As a first try, only water was injected from the bottom of the melt through five water injection nozzles when the melt front reached the water injection nozzles. A description of the test facility for the core catcher, the thermite composition, and the methods of experiment is included. The test results are discussed.

关 键 词：Core catcher corium cooling sacrificial layer water injection severe accidient thermite reaction. 

分 类 号：TQ567.9[化学工程—炸药化工] X703[环境科学与工程—环境工程]