...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Annals of nuclear energy >Effects of a change in the design of cooling water injection on risk reduction in a beam tube rupture
【24h】

Effects of a change in the design of cooling water injection on risk reduction in a beam tube rupture

机译：冷却水注射设计变化对梁管破裂风险降低的影响

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper, the difference between the current design and a newly proposed method for the injection of supplementary cooling water into a nuclear research reactor in response to the rupture of a beam tube is investigated. Here, the newly proposed method or design is to maintain the cooling water in the chimney at a certain level solely by gravitational coolant feeding from the emergency water supply system (EWSS) tank to prevent nuclear fuel damage, without the sump recirculation operations described in the current procedure for the beam tube accident. The reduction of risk to the reactor core, quantified in terms of core damage frequency (CDF), as a result of the proposed changes to the design of the emergency water supply in the event of a beam tube rupture is as follows. 1) The overall CDF for the reactor with the newly proposed design for emergency cooling water injection is about 4.16E-06/yr, approximately 8.6% lower than the CDF of the existing design (4.55E-06/yr). 2) The CDF specifically due to a beam tube rupture is 6.33E-08/yr, representing an 85.9% decrease compared to that with the existing design (4.49E-07/yr). In addition to these risk-reduction effects, it is also worth noting that changing the emergency water injection design allows pure coolant to be supplied to the EWSS tank, eliminating the need to decontaminate the reactor after an accident. (C) 2021 The Author(s). Published by Elsevier Ltd.
机译：本文研究了当前设计与将补充冷却水注入核研究反应器中的新提出的方法之间的差异进行了研究响应于梁管的破裂。这里，新的方法或设计是通过从紧急供水系统（EWSS）罐中的重力冷却剂进料，以防止核燃料损坏，以防止核燃料的一定水平在烟囱中保持冷却水，而不会在没有贮存再循环操作的情况下梁管事故的当前程序。由于在梁管破裂的情况下，根据核心损伤频率（CDF）而言，在核心损伤频率（CDF）方面，对反应堆核的风险降低，这是如下所示的情况下提出了紧急供水的改变。 1）具有新提出的应急冷却水注入设计的反应器的总CDF约为4.16E-06 / YR，低于现有设计的CDF（4.55E-06 / YR）的约8.6％。 2）CDF专门由于梁管破裂为6.33E-08 / YR，与现有设计相比，表示减少85.9％（4.49E-07 / YR）。除了这些风险减少效果外，还值得注意的是，改变应急注水设计允许纯冷却剂供应到EWSS罐中，消除了事故发生后净化反应器的需要。 （c）2021提交人。 elsevier有限公司出版

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号