Failure analysis on synergistic effect of erosion and corrosion on failed fittings in specialty chemical plant. Part I: Elbows

2018 ◽  
Vol 70 (5) ◽  
pp. 906-920 ◽  
Author(s):  
Xiao‐Lei Yang ◽  
Jing‐Lu Fei ◽  
Sheng‐Hui Wang ◽  
Yi Gong ◽  
Zhen‐Guo Yang
Keyword(s):  
Synergistic Effect ◽  
Failure Analysis ◽  
Plant Part ◽  
Chemical Plant ◽  
Specialty Chemical

Failure analysis on synergistic effect of erosion and corrosion on failed fittings in specialty chemical plant. Part II: Control valve

2018 ◽  
Vol 70 (5) ◽  
pp. 921-929
Author(s):  
Xiao‐Lei Yang ◽  
Sheng‐Hui Wang ◽  
Jing‐Lu Fei ◽  
Yi Gong ◽  
Zhen‐Guo Yang
Keyword(s):  
Synergistic Effect ◽  
Failure Analysis ◽  
Control Valve ◽  
Plant Part ◽  
Chemical Plant ◽  
Specialty Chemical

Failure Analysis Cases of Stress Corrosion Cracking in Complex Media Environments

2014 ◽  
Author(s):  
Zhibin Ai ◽  
Xuedong Chen ◽  
Zhichao Fan ◽  
Rongrong Li
Keyword(s):  
Failure Analysis ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Raw Materials ◽  
Poor Quality ◽  
Corrosion Cracking ◽  
Chemical Plant ◽  
Complex Media ◽  
Process Plants ◽  
Media Environments

The phenomenon of stress corrosion cracking extensively exists in equipments and pipelines of process plants due to aggravated tendency of raw materials to poor quality, especially in complex media environment, the factors causing stress corrosion cracking are very complex, sometimes a certain medium plays a dominating role, sometimes several kinds of media act together, and sometimes the actions of some media change to each other in different periods. In this paper, the laws of competition, promotion or suppression among multiple mechanisms upon stress corrosion cracking due to multiple causes are described through failure analysis of stress corrosion cracking accident cases such as cracking of inner wall cladding of cyclone separator for coal chemical plant, explosion of gasification furnace for coal chemical plant, etc., and analysis and judgment methods of their dominating mechanisms, influential laws of secondary mechanisms and preventive measures are proposed.

Experimental and computational failure analysis of a high pressure regulating valve in a chemical plant

2016 ◽  
Vol 70 ◽  
pp. 188-199 ◽  
Author(s):  
Junzhen Yi ◽  
Hongxiang Hu ◽  
Yugui Zheng ◽  
Yaming Zhang
Keyword(s):  
High Pressure ◽  
Failure Analysis ◽  
Chemical Plant
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