蒸汽发生器主蒸汽管道^(16)N传输时间的分析与计算

The transporting time analysis & calculating for the nuclide ^(16)N in main steam pipeline

利用监测二回路主蒸汽管中16N辐射来实现蒸发器传热管破损在线检测是一种直接而有效的方法;主蒸汽管道16N传输时间的计算是在线检测系统的关键技术之一。分析了传热管发生泄漏时的16N放射性核素迁移过程,对16N传输时间的计算原理和方法进行了探讨,并以"陆奥"船用核动力装置为例,计算了三种情况下传热管发生泄漏时16N的传输时间。

It is a direct and effective way to detect the SG tubes leakage by measuring the level of ()^(16)N radioactivity in main stream system on-line. Analyzing & calculating the transporting time of the nuclide ()^(16)N in main steam pipeline is its key technology. In this paper, the process of the nuclide ()^(16)N transport in main steam pipeline transport after the SG tubes leakage is described, and the principle & methodology of calculating the nuclide ()^(16)N transporting time is discussed. As an example, the transporting time of the nuclide ()^(16)N in the Lin'ao main steam pipeline at three case after the SG tubes leak has been calculated.