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Estimation of Likely Accident Progression at Fukushima Daiichi Unit 2

机译：福岛第一核电站2号机组可能发生的事故的估计

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The analysis results indicate that the void fraction of two-phase flow to RCIC turbine was about 0.72. The mixing effect in S/C could effectively suppress pressure increase when SRV was in operation and forced open. The likely seawater injection rate was 1 -2% of total flow rate through fire engines, and the corresponding RPV lower head failure time was located in 92.84 to 96.17 h. In addition, the FPs and gaseous phase have directly leaked from RPV to D/W at about 80 h when fuel debris relocated into lower plenum.
机译：分析结果表明，流向RCIC汽轮机的两相流的空隙率约为0.72。 S / C中的混合效果可以有效地抑制SRV在操作中并强制打开时的压力升高。可能的海水注入率是通过消防车的总流量的1-2％，相应的RPV下扬程下降时间位于92.84至96.17 h。此外，当燃料残渣移至下增压室时，FP和气相在约80小时时已从RPV直接泄漏至D / W。

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  • 来源
    《Transactions of the American nuclear society》 |2017年第2017期|1813-1814|共2页
  • 作者

    Gen Li; Jun Zhang; Junjie Yan;

  • 作者单位

    State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China;

    State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China;

    State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China;

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