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首页> 外文会议>12th International Conference on Environmental Degradation of Materials in Nuclear Power Systems: Water Reactors 2005 vol.2 >Flow Accelerated Corrosion and Cracking of Carbon Steel Piping in Primary Water-Operating Experience at the Point Lepreau Generating Station
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Flow Accelerated Corrosion and Cracking of Carbon Steel Piping in Primary Water-Operating Experience at the Point Lepreau Generating Station

机译：Lepreau点发电站一次水运行过程中碳钢管道的流动加速腐蚀和破裂

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摘要

This paper reports operating experience where both flow accelerated corrosion (FAC) and intergranular cracking have occurred in type SA-106 Gr. B carbon steel piping in a CANDU~R Reactor. At the Point Lepreau Generating Station (PLGS), both types of degradation were observed at the same location in piping that transports ～310℃ (590℉) primary coolant away from the reactor core. Cracks were initiated from both inside and outside surfaces. To-date, cracking and FAC have been life limiting for fifteen pipes at PLGS, nine from cracking and six from FAC. This paper provides an overview of the PLGS pipe degradation history, characteristics of the observed corrosion and cracking, plausible mechanisms, primary causal factors, and future failure rates.
机译：本文报告了在SA-106 Gr型中同时发生流加速腐蚀（FAC）和晶间裂纹的操作经验。 B CANDU〜R反应器中的碳钢管道。在勒珀洛角发电站（PLGS），在从反应堆堆芯输送约310℃（590 coolant）初级冷却剂的管道的同一位置观察到两种降解。裂纹从内外表面开始。迄今为止，对于PLGS的15条管道，裂纹和FAC一直是使用寿命的限制，其中9条裂纹来自FAC，6条来自FAC。本文概述了PLGS管道的退化历史，观察到的腐蚀和开裂的特征，合理的机制，主要的因果因素以及未来的故障率。

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