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Discussion Forums - The Hendrix Group
HomeHomeDiscussionsDiscussionsOil Refinery Co...Oil Refinery Co...90-10 Cu-Ni piping corrosion in well water90-10 Cu-Ni piping corrosion in well water
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2/10/2006 9:00 AM
 
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oK i am curious about your photos send them to luis.marques@galpenergia.com Best regards Luis Marques
 
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2/10/2006 9:00 AM
 
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I agree with the conclusions of your laboratory analysis report. As I told you in my previous posting high levels of oxygen and low water velocity (stagnancy) of water in the piping are prone to copper/nickel (90/10). The percentage of chlorides as well as sulphates is also important and its contribution for the copper pipe corrosion should be also considered. Regards and tank you by the %E2%80%9Cnice%E2%80%9D photos Regards Luis Marques
 
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2/10/2006 9:00 AM
 
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Oxygen/Sulfides/Sulfates/Chlorides were all ruled out. As indicated in my private message to you, corrosion is very localized at base metals areas immediately adjacent to socket welds. Thanks for your interest so far.
 
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2/13/2006 9:00 AM
 
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Hi Aboumar If as you said Oxygen/Sulfides/Sulfates/Chlorides were all ruled out, from your photos corrosion shape and flow direction, your corrosion problem can be attributed to water turbulence and impingement droplets of bubbles or particles, another possibility can be due to under deposit corrosion by a differential aerated cell. Fell free to contact me Regards Luis Marques
 
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2/13/2006 9:00 AM
 
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Turbulemce has also been ruled out. Not sure whether you were able to categorize the pattern of metal loss from the photos I sent you. Those photos did not tell much about the pattern. There is no evidence of impingement attack. I am now directing my efforts towards other theories. Thanks again.
 
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