Jonathan D. Dobis: About the Author
Materials and Corrosion Director, The Equity Engineering Group, Inc.
Jon Dobis has over 35 years’ experience in Materials & Corrosion in the refining and chemical process industries including 10 years as a metallurgist at a major US refinery. Jon was the project manager and primary author of the API 571 document on “Damage Mechanisms Affecting Fixed Equipment in the Refining Industry”. He is presently Acting Director of the Materials & Corrosion Group for Equity Engineering and has authored or co-authored more than 25 technical publications including five on the subject of corrosion in HF Alkylation Units. Jon has BS and MS degrees in Metallurgical Engineering and is a registered professional engineer in several states.
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Published Articles
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July/August 2016 Inspectioneering JournalBy Mark Geisenhoff at Flint Hills Resources, Jonathan D. Dobis at The Equity Engineering Group, Inc., Phillip E. Prueter at The Equity Engineering Group, Inc., and Dr. Michael S. Cayard at Flint Hills ResourcesThis article summarizes a recent finite element analysis (FEA)-based study that employs creep simulation techniques to investigate the elevated temperature response of piping with peaked longitudinal weld seams.
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July/August 2005 Inspectioneering JournalBy Jonathan D. Dobis at The Equity Engineering Group, Inc., and David N. French
This bulletin is part of a series of WRC Bulletins that contain the technical background and other information to evaluate damage mechanisms in various industries to facilitate the use of API 579. These bulletins, shown below, will be updated based...
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July/August 2004 Inspectioneering JournalBy Jonathan D. Dobis at The Equity Engineering Group, Inc., Dana G. Williams at Marathon Ashland Petroleum LLC, and David L. Bryan, Jr. at Marathon Ashland Petroleum LLC
The following is the final part of a 2 part series. Part 1 covered the following considerations that are critical in establishing effective reliability and inspection programs for these complex units: - HF Alkylation Process Description - An...
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May/June 2004 Inspectioneering JournalBy Jonathan D. Dobis at The Equity Engineering Group, Inc., Dana G. Williams at Marathon Ashland Petroleum LLC, and David L. Bryan, Jr. at Marathon Ashland Petroleum LLC
Corrosion and fouling in HF Alkylation Units are closely linked to feed quality and operating conditions. This paper outlines the relationship between key operating parameters and corrosion that has been used to develop a set of guidelines to define...
