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Discussion Forums - The Hendrix Group
HomeHomeDiscussionsDiscussionsGeneral Corrosi...General Corrosi...STAINLESS STEEL "RED STAINING"STAINLESS STEEL "RED STAINING"
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4/16/2003 9:00 AM
 
I am investigatiing the source of iron in our reactor coolant system (nuclear power plant). Our reactor coolant system is made out of austnitic stainless steel piping and components (or other corrosion resistent materials). however we still see approximately 7-14 ppb of iron in the process fluid. The fluid see's temperature changes of 550-100 F and is in a 1000 ppm boric acid solution. We have noticed that a few of our components (centrifugal pumps and diaphram valves) have red staining on their internals. Could this be due to a process called "rouging". Also how could I figure out under the above conditions what a normal corrosion rate is for stainless steel
 
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4/17/2003 9:00 AM
 
Dear Sir: We can't offer an opinion on the source of your red staining without additional knowledge of your cooling system circuit conditions and materials of construction. However, you might consider in-situ corrosion coupon tests, or better still, controlled laboratory corrosion coupon exposures. Hope this helps! David Hendrix The Hendrix Group Inc.
 
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HomeHomeDiscussionsDiscussionsGeneral Corrosi...General Corrosi...STAINLESS STEEL "RED STAINING"STAINLESS STEEL "RED STAINING"


  

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