Stress Corrosion Cracking Inhibitors

laboratory testing

oil pipelineImagine the potential of bulk liquid storage free from troubles associated with tank, piping, or other component failures when ethanol and ethanol blends are stored and transferred. Mechanical experts have identified stress corrosion cracking (SCC) as a failure mode linked to fuel grade ethanol transport and storage systems. API Report 939D documents SCC related failures in mid-stream fuel ethanol distribution storage tanks, oil company storage and blending facilities (steel tanks, rack piping and components) including a pipeline segment. These failures occurred in tank bottoms, lower shells and floating roofs as well as loading rack piping and in-line equipment. SCC failure is characterized by significant crack branches propagating below the metal surface, making it difficult to detect before failure occurs.

Ensuring component compatibility and inhibiting SCC from starting is the best way to combat potential mechanical failure. Simply using ASTM D-4806 fuel grade ethanol does not protect your equipment. Those interested in transporting, distributing or storing fuel ethanol and fuel ethanol blends should first ensure the materials of construction involved in their processing and storage equipment are ethanol compatible. Though many steel grades have shown to be compatible with ethanol, they are still susceptible to SCC.

Protect that equipment with breakthrough chemical additive technology developed and offered by MCC. We offer a line of additives specifically designed for SCC mitigation and prevention wherever fuel ethanol is distributed or stored. In working with MCC, an additive solution will be custom-engineered to your unique system.

Contact MCC today to learn more about how you can protect your assets from catastrophic failure caused by stress corrosion cracking.