• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>5th International Symposium on Materials and Reliability in Nuclear Power Plants amp; Symposium on Water Chemistry and Corrosion in Nuclear Power Plants in Asia-2017 amp; 3rd Asian Forum on Material Aging I >Improvement of plant reliability based on fusion of prediction and inspection of wall thinning of piping due to FAC
【24h】

Improvement of plant reliability based on fusion of prediction and inspection of wall thinning of piping due to FAC

机译：基于FAC导致的管道壁变薄的预测和检查的融合，提高了工厂的可靠性

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

Early detection and prediction of flow-accelerated corrosion(FAC)on major piping systems and application of suitable countermeasures such as water chemistry improvements are essential for preventing pipe rupture in aged NPPs.There are generally two approaches to evaluating and preventing future FAC occurrence; one is based on inspection and the other on prediction or estimation.The fusion of the prediction and inspection procedures can lead to effective and reliable preparation against FAC occurrence and propagation.An FAC code based on analysis of materials and water interaction can be applied for FAC risk evaluation for the entire plant systems to point out the locations where future pipe defects might occur,their time margins and their hazard scales and to prepare for continuous pipe inspections and early implementation of suitable countermeasures.As a result of V&V evaluation of the FAC code,it was confirmed that the code could prepare for the wall thinning rate within a factor of 2.As a result of sensitivity analysis of major FAC parameters,it was pointed out that the effects of flow turbulence showed the largest contribution to the uncertainty of wall thinning rate estimation.The prediction can contribute to select the important location for inspection,while the inspection can contribute to improve the prediction based on wall thinning date,which may result in increasing plant reliability.The fusion of the prediction and inspection procedures is demonstrated in the presentation.
机译：早期检测和预测大型管道系统中的加速腐蚀（FAC）以及应用适当的对策（如水化学改进）对于防止老化的NPPs的管道破裂至关重要，通常有两种方法来评估和防止将来的FAC发生;一种是基于检查，另一种是基于预测或估计。预测和检查程序的融合可以为防止FAC发生和传播提供有效而可靠的准备。基于材料和水相互作用的FAC代码可以应用于FAC对整个工厂系统进行风险评估，以指出未来可能出现管道缺陷的位置，时间裕度及其危害程度，并为连续进行管道检查和尽早实施适当的对策做准备。作为FAC准则V＆V评估的结果验证了该规范可以为壁厚减薄率的2倍做好准备。通过对主要FAC参数的敏感性分析，指出流动湍流对壁厚不确定性的影响最大。细化率估算。预测有助于选择要检查的重要位置，而检查则可以做出贡献改进基于壁薄日期的预测，这可能会提高工厂的可靠性。在演示中演示了预测和检查程序的融合。

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