Graphitic Corrosion Case Study

posted January 2017

We were asked to determine the mechanism and possible causes of corrosion of a cast iron sanitary sewer pipe. Metallurgical testing and EDS analysis pointed to graphitic corrosion. With graphitic corrosion there is no reduction in the size or shape of the pipe but the strength of the material is severely reduced.

Cross section of vent pipe.

Cross section of vent pipe.

The Vent Pipe case study explains in more detail how this type of corrosion mechanism is identified, causes and our recommendations to the client.

All of the case studies on our website come from our files. They have been edited to present a more casual writing style than our formal reports, but generally they follow the structure of our reports and give an overview of the findings and conclusions from an investigation.

New P.E. at MEE

posted January 2017

Congratulations to MEE staff member, Neal Hanke, P.E., who just received his professional engineering license. To become licensed, engineers must complete a four-year college degree, work under a Professional Engineer for at least four years, pass two intensive competency exams and earn a license from the state licensing board. To retain their licenses, PE’s must continually maintain and improve their skills throughout their careers. A PE license indicates a commitment to hard work, integrity and dedication to the profession.

Learn more about MEE’s engineering and technical staff on the “About Us” page of our website.

 

 

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