David A. Osage, P.E., is internationally recognized for his expertise in the design of new equipment and as an industry expert and leader in the development and use of FFS (Fitness-for-Service) technology. He is the President and CEO of The Equity Engineering Group, Inc., and has over 30 years of experience in the refining and petrochemical industries. As the lead investigator and principal author of the new ASME B&PV Code, “Section VIII, Division 2, Rules for Construction of Pressure Vessels: Alternative Rules,” he developed a new organization and writing style for this code and was responsible for introducing the latest developments in materials, design, fabrication, and inspection technologies. These technologies include new models for materials behavior suitable for use in a construction code, updated design-by-rule methods, modern design-by-analysis procedures including the introduction of elastic-plastic analysis methods, and a new fatigue method for welded joints.
Mr. Osage received a Certificate of Acclamation from ASME for this work. He has served on several ASME B&PV VIII Code Committees. Mr. Osage earned his Bachelor and Master’s degrees in Mechanical Engineering from the Stevens Institute of Technology in 1977. He is a registered professional engineer in Ohio.
Phil Prueter, P.E., is a Principal Engineer and the Advanced Analysis Group Head at The Equity Engineering Group, Inc. in Shaker Heights, Ohio USA. He is a consultant in the petrochemical, chemical, and nuclear industries, performing Fitness-For-Service (FFS) and design evaluations of equipment using the rules of API 579-1/ASME FFS-1 and the ASME Boiler and Pressure Vessel Code. He also uses non-linear Finite Element Analysis (FEA) and Design by Analysis (DBA) to support FFS and design evaluations.
Mr. Prueter specializes in pressure component design, FFS, static and dynamic computational techniques, transient thermal-mechanical fatigue analysis, elevated temperature creep and creep-fatigue simulations, seismic and natural frequency analysis, and fracture mechanics using analytical and computational techniques. Currently, Mr. Prueter’s responsibilities include leading the Advanced Analysis Group and managing Nuclear Consulting Services. He is a Registered Professional Engineer in nine states and qualifies as a Specialized Registered Professional Engineer (RPE) per the American Society of Mechanical Engineers, Boiler & Pressure Vessel Code, Section III, Division 1, Mandatory Appendix XXIII and can provide certification of nuclear Design Reports on behalf of the N Certificate Holder. Additionally, he is a member of the ASME Section VIII Working Group on Design by Analysis (WG-DBA) and Subgroup on Elevated Temperature Construction (SG-ETC), is an organizer for the ASME Pressure Vessels and Piping Conference, and has authored or co-authored more than 25 technical publications.
Prior to joining the Equity Engineering Group, Mr. Prueter was a graduate research fellow in the Dynamics and Vibrations Laboratory at The Ohio State University. His research involved using advanced finite element and contact mechanics techniques to analyze the design and vibration characteristics of gear drive systems and rotating equipment. Mr. Prueter also has experience in the nuclear industry, performing thermal, mechanical, and fatigue analyses on steam generation components for government nuclear power plants.