Research of Effects of Accumulator on Loss-of-Coolant Accident for Small Modular PWRs
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摘要: 基于小型模块化压水堆失水事故(LOCA)的现象和特征,分析燃料包壳峰值温度(PCT)出现的机理,并研究安注箱(ACC)设置对PCT和事故长期降压的影响。结果表明:在一定范围中等破口尺寸LOCA下,ACC注水可能导致堆芯更不利的后果,小型堆可合理考虑ACC的作用进行系统设计。Abstract: In this study, based on the phenomena and characteristics of LOCA for the small modular PWRs, the mechanism for the occurrence of Peak Cladding Temperature(PCT) was analyzed, and the effects of accumulator(ACC) design on PCT and system depressurization were studied. It is shown that the accumulator injection may lead to more penalizing results for special medium size LOCA, and this result could be considered in the system design of small modular PWR.
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Key words:
- Small modular PWR /
- Accumulator /
- LOCA
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