Failure analysis of a natural gas pipeline

被引：15
|
作者：
Zhao, Yafan [1 ]
Song, Mingda [2 ]
机构：
[1] Shandong Jianzhu Univ, Jinan 250014, Peoples R China
[2] Shandong Special Equipment Inspect Inst, Jinan 250013, Peoples R China
来源：
ENGINEERING FAILURE ANALYSIS | 2016年 / 63卷
关键词：
Natural gas pipeline; SCC; Mechanical damage; Failure analysis;
D O I：
10.1016/j.engfailanal.2016.02.023
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A L390 natural gas pipeline exploded in 2011 in China. Macrofracture examination, thickness measurement, chemical composition analysis, metallographic inspection, mechanical property testing, fracture scan electronic microscopy examination and environment analysis were conducted to the burst pipeline. The results showed that Stress Corrosion Cracking (SCC) generated in the mechanical damaged zone of the pipeline was the reason of the failure. This kind of cracking was induced by Cl- and HCO3- in near neutral corrosive medium of pH value. The stress concentration was induced by the groove damage under inner pressure. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：61 / 71
页数：11
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