• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International meeting on severe accident assessment and management 2012: Lessons learned from fukushima dai-ichi >RECONSTRUCTION OF AIRBORNE ACTIVITY CONCENTRATIONS FROM RADIATION EXPOSURE RECORDS
【24h】

RECONSTRUCTION OF AIRBORNE ACTIVITY CONCENTRATIONS FROM RADIATION EXPOSURE RECORDS

机译：通过辐射暴露记录重建航空活动浓度

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Releases of radioactive material from the Fukushima Daiichi reactors were tracked across the Japanese countryside by a network of radiation monitoring stations. However, the measurement of ambient dose rate by these detectors does not account for the dose contribution due to inhalation of airborne radioactive materials, which can be much greater than the submersion dose. The Radioactive Air Inhalation Dose EstimatoR (RAIDER) code is developed to provide an estimate of the committed inhalation dose based upon ambient dose measurement and core inventory and fractional release assumptions. The energy response of the radiation monitoring station detector is used to determine the total activity concentration in the surrounding air, which in turn is coupled with the release assumptions to estimate the activity of the major radionuclides present. Inhalation dose conversion factors then permit the committed effective dose to be calculated. Sample scenarios demonstrate the functionality of RAIDER, indicating that the committed inhalation dose is 58.9 times higher than the accumulated ambient dose in the plume for a measurement occurring five days after reactor shutdown. Future improvements to RAIDER may include the addition of physical removal mechanisms and coupling with other accident analysis codes.
机译：通过辐射监测站网络跟踪了整个日本乡村从福岛第一核反应堆释放的放射性物质。但是，这些检测器对环境剂量率的测量并未考虑由于吸入空气中放射性物质而引起的剂量贡献，这可能比浸没剂量大得多。开发了放射性空气吸入剂量估算（RAIDER）代码，以根据环境剂量测量值，堆芯库存和释放分数假设来估算承诺的吸入剂量。辐射监测站探测器的能量响应用于确定周围空气中的总活度浓度，再将其与释放假设相结合，以估算存在的主要放射性核素的活度。然后，吸入剂量转换因子可以计算出有效剂量。示例场景演示了RAIDER的功能，表明在反应堆关闭五天后进行的测量中，确定的吸入剂量比羽流中的累积环境剂量高58.9倍。 RAIDER的未来改进可能包括增加物理移除机制，以及与其他事故分析代码的结合。

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