| 注水时机对压水堆严重事故进程的影响 |
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| 引用本文： | 于健,徐金良,陈五星,唐耀阳.注水时机对压水堆严重事故进程的影响[J].核动力工程,2012,33(4):9-12. |
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| 作者姓名： | 于健 徐金良 陈五星 唐耀阳 |
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| 作者单位： | 海军装备部沈阳局,沈阳,110000 |
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| 摘 要： | 以典型的3环路压水堆为参考对象,建立了详细的严重事故计算模型。选择一回路热段当量直径为18 cm的失水事故(LOCA)作为初始事件,采用RELAP5/SCDAP/MOD3.2为分析工具,对无注水、无缓解措施下的基准事故进程进行计算分析,研究3种不同注水时机对严重事故进程的影响。3种注水时机分别为堆芯表面峰值温度达到1100 K、1300 K、1500 K时开始注水。计算结果显示,压水堆严重事故进程对于注水的时机非常敏感。较早阶段的注水对于阻止堆芯熔化十分有效,注水较晚会恶化事故进程,加速堆芯熔化。
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| 关 键 词： | 压水堆 严重事故 峰值温度 注水时机 |
Influence on Injection Occasion to PWR Severe Accident Progression |
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| YU Jian
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XU Jin-liang
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CHEN Wu-xing
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TANG Yao-yang.Influence on Injection Occasion to PWR Severe Accident Progression[J].Nuclear Power Engineering,2012,33(4):9-12. |
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| Authors: | YU Jian XU Jin-liang CHEN Wu-xing TANG Yao-yang |
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| Affiliation: | Shenyang Bureaux,Department of Naval Armament,Shenyang,110000,China |
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| Abstract: | A typical three-loop pressurized water reactor(PWR) as reference planted is chose,and the PWR severe accident analysis models based on RELAP5/SCDAP/MOD3.2 code are developed.The best estimate calculation of hot leg large break LOCA of 18 cm without mitigating measures is performed.The mitigating capability of injection to the accident is studied when peak core surface temperature reaches 1100 K,1300 K and 1500 K respectively.The results show that the injection occasion plays an important role in the accident progression.Injection during early stage will prevent core from melting effectively.However,injec-tion during later stage may deteriorate the progression of severe accident and accelerate of core melt. |
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| Keywords: | Pressurized water reactor(PWR) Severe accident Peak core surface temperature(PCT) Injection occasion |
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