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The Curse of the Mummy: Mysterious Tank Lining Failures in WAC Vessels

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By Mike O'Donoghue, Akzo Nobel Coatings, Ltd.

Presented at SSPC 2014; Session: Coating Failure Investigations; Session chair: Charlie Brown, Greenman-Pedersen, Inc.

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In the search for a "chemical mummy" in the Canadian oil patch, this paper outlines discoveries made from forensic work to unravel epoxy lining failures in several water treatment WAC (Weak Acid Cation) vessels.
The chemical dig exumes third party independent testing of several linings at elevated temperatures in chemical immersion, scrutiny of the epoxy lining chemistry/application process, and the severity of the real world service of a WAC vessel versus pre-screening accelerated laboratory testing.
The "proof of the mummy" was in the digging and the lessons learned in comparing simulated laboratory tests with real life field conditions.


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