ToSPACE和CHECWORKS程序FAC分析结果与实验结果的比较

K. Hwang, Hun Yun, Hyukki Seo, E. Jung, J. Im, K. M. Kim, D. J. Kim
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引用次数: 0

摘要

核电站二次系统中的许多管道部件已暴露于老化机制中,如FAC(流动加速腐蚀)、空化、闪蒸、LDIE(液滴冲击侵蚀)和SPE(固体颗粒侵蚀)。这些机制可能导致部件变薄、泄漏或破裂。由于1986年Surry第二单元和2004年Mihama第三单元的减壁导致管道破裂,管道减壁管理已成为核工业中最重要的问题之一。为了应对FAC和侵蚀导致的管道壁薄,KEPCO-E&C开发了ToSPACE程序。它可以预测FAC和侵蚀现象,也可以用于管道壁薄化管理工作,如敏感性分析、UT(超声波检测)数据评估以及制定长期检测计划。尽管ToSPACE可以预测上述五种老化机制,但本文仅将使用ToSPACE的FAC预测结果与使用FACTS(Flow Accelerated Corrosion Test System)的实验结果进行了比较,以验证ToSPACE。此外,还将ToSPACE的FAC预测结果与世界各地广泛使用的CHECWORKS的预测结果进行了比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Comparison between FAC Analysis Result Using ToSPACE & CHECWORKS Programs and Experimental Result
A number of piping components in the secondary system of nuclear power plants (NPPs) have been exposed to aging mechanisms such as FAC (Flow-Accelerated Corrosion), cavitation, flashing, LDIE (Liquid Droplet Impingement Erosion), and SPE (Solid Particle Erosion). Those mechanisms may lead to thinning, leaking, or the rupture of components. Due to the pipe ruptures caused by wall thinning of Surry Unit 2 in 1986 and Mihama Unit 3 in 2004, pipe wall thinning management has emerged as one of the most important issues in the nuclear industry. To manage the wall thinning of pipes caused by FAC and erosion, KEPCO-E & C has developed ToSPACE program. It can predict both FAC & erosion phenomena, and also be utilized in the pipe wall thinning management works such as susceptibility analysis, UT (Ultrasonic Test) data evaluation as well as establishment of long-term inspection plan. Even though the ToSPACE can predict the five aging mechanisms mentioned above, only the FAC prediction result using ToSPACE was compared herein with the experimental result using FACTS (Flow Accelerated Corrosion Test System) to verify the ToSPACE’s capability. In addition, the FAC prediction result using ToSPACE was also compared with that of CHECWORKS that is widely used all over the world.
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