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Is it MIC or Pitting Corrosion? An Insight in a Common Overlapping

Picture for Is it MIC or Pitting Corrosion? An Insight in a Common Overlapping
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Although Microbiologically Influenced Corrosion (MIC) is a critical damage mechanism that had been researched for decades in different environments, yet diagnosing a specific industrial failure to be attributed to MIC can still be challenging. The challenge of accurately identifying an MIC failure is partially due to the similarity of the failure morphology with other damage mechanisms, e.g., pitting corrosion due to chloride. Furthermore, the variously proposed initiation and propagation mechanisms for different types of bacteria may illustrate to the failure analyst that the MIC mechanisms are not yet well established. The confusion of MIC failure identification could also be aggravated by the fact that the presence of bacteria in a system does not necessarily mean that MIC is the culprit. Therefore, this paper will shed some light on the overlapping areas between MIC and pitting corrosion, especially the morphology of the attack. Moreover, several steps will be highlighted and discussed on how to correctly identify if MIC is the culprit in a specific failure. 

Product Number: 51320-14719-SG
Author: Mohammed Al Muaisub
Publication Date: 2020
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To study the effect of repeated biocide treatments to mitigate microbiologically influenced corrosion (MIC), we used a Center for Disease Control (CDC) biofilm reactor to generate and remediate corrosive biofilms on carbon steel coupons grown from a produced water sample from a salt water disposal (SWD).
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Product Number: 51300-06112-SG
ISBN: 06112 2006 CP
Author: Guenter Schmitt, Michaela Hörstemeier
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The literature has been reviewed with respect to information gained in the recent 20 years on CO2 corrosion of materials used in the oil and gas industry. The paper discusses the effect of materials related, medium-related and interface-related parameters on general (uniform) and localized corrosion.  Part II
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02446 MICROBIOLOGICALLY INFLUENCED CORROSION FAILURE ANALYSIS OF 304L STAINLESS STEEL PIPING SYSTEM LEFT STAGNANT AFTER HYDROTESTING WITH CITY WATER

Product Number: 51300-02446-SG
ISBN: 02446 2002 CP
Author: Susan W. Borenstein and Philip B. Lindsay
Publication Date: 2002
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A case history is described involving microbiologically influenced corrosion (MIC) of AISI Type 304L stainless steel piping failure after being in contact with untreated stagnant, low chloride potable water for nine months. Specialized microbiological analysis techniques, including scanning electron and optical cmicroscopy, were used in the failure analysis.
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