Analysis of Cooling Measures for ECCS at CARR Shutdown
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摘要: 停堆后的冷却问题是中国先进研究堆(CARR)重要的安全问题之一。CARR应急堆芯冷却系统是一套多功能、高度安全可靠的专设安全设施,它在反应堆正常运行时执行池水冷却功能;在正常停堆和事故停堆过程中执行应急堆芯冷却功能;还执行应急热阱选择、系统供电方式、回路阻力分析、阀门开关设置等方面的处理,使系统在两种功能的切换中不需要人为操作,依靠流量的自动匹配来满足正常运行和事故运行的要求。体现了CARR的安全性、先进性和经济性。本文以核安全法规和导则为前提,以满足系统功能为基础,首先介绍了CARR应急堆芯冷却系统的功能、主要参数和流程。根据CARR的实际情况,对应急堆芯冷却系统的停堆冷却措施和典型事故进行了分析,论证了该系统是如何在正常停堆和事故停堆状态下实现非能动堆芯冷却的。
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关键词:
- 中国先进研究堆(CARR) /
- 应急堆芯冷却 /
- 停堆冷却 /
- 分析
Abstract: How to cool down the reactor core after shutdown is one of the most important safety problems for CARR.ECCS of CARR is a high capability and credibility system with two purposes:One is to cool the pool water in the normal condition and the other is to cool the core in emergency.These designs,including no manpower interruption and automatic matching,will widen the method and accumulate the experiences for domestic research reactors and also testify that CARR is safe,economical and advanced. This paper first introduced the function,main parameters and flow chart of the CARR ECCS,considering the nuclear safety code and guide.Based on the real condition of CARR,this paper also analyzed the typical accidents and the shutdown cooling of the ECCS,and demonstrated how the ECCS carded out the passive cooling at normal and accidental shutdown. -
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