Galvanic Corrosion Between Dissimilar Metals

AIChE Spring Meeting and Global Congress on Process Safety
April 5, 2012 - 12:00am

A Dow USGC cracker suffered a tube failure on a cracked gas compressor inner stage cooler after ten plus years of service. To further extend the equipment life, the decision was made to replace the tube bundle and upgrade the metallurgy of the tubes from admiralty brass to Duplex stainless steel. The new tube bundle was placed in service, but failed after only eight months of operation. The premature failure was found to be caused by deep pitting in the carbon steel tubesheet. The dissimilar metals of the Duplex tubes and carbon steel tubesheet, with river water acting as the electrolyte, formed a galvanic cell which preferentially corroded the carbon steel tubesheet. This paper will describe the details of the failure and failure mechanism.
Professional Development Hours
0.5 PDHs
You will be able to download and print a certificate for these PDH credits once the content has been viewed. If you have already viewed this content, please click here to login.
Presenter(s): 

Would you like to access this content?

No problem. You just have to complete the following steps.

You have completed 0 of 2 steps.

  1. Log in

    You must be logged in to view this content. Log in now.

  2. Purchase Technical Presentation

    You must purchase this technical presentation using one of the options below.
    If you already purchased this content recently, please click here to refresh the system's record of ownerships.

Pricing

Credits 0.5 Use credits
List Price $25.00 Buy now
AIChE Members $15.00 Buy now
AIChE Undergraduate Student Members Free Free access
AIChE Graduate Student Members $15.00 Buy now
Related Topics: