A Proposed Core Catcher System and Thermite Experimental Results
A Proposed Core Catcher System and Thermite Experimental Results作者机构：Thermal Hydraulics Safety Research Division Korea Atomic Energy Research Institute Daejeon 305-353 Korea
出 版 物：《Journal of Energy and Power Engineering》 (能源与动力工程（美国大卫英文）)
年 卷 期：2011年第5卷第11期
页 面：1005-1014页
学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 082604[工学-军事化学与烟火技术] 08[工学] 0826[工学-兵器科学与技术]
主 题：铝热剂 热实验 系统 测试设备 原子能研究所 蒸汽爆炸 水喷嘴 直接接触
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.
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