Brad Addison is a Mechanical Engineer for Rotating Machinery in corporate engineering at The Chemours Company – a 2015 spinoff of DuPont. Previously, he worked for DuPont, and since 2006 has been responsible for specifying, installing, commissioning, overhauling, repairing and troubleshooting primarily fluoro-chemical, sulfuric acid and air compressors, blowers and fans, as well as steam turbines. Previous to this, he worked for MG Industries and Air Liquide from 1994 to 2006 and was responsible for compressors, blowers, cryogenic expanders, steam turbines, water / cryo pumps, cooling towers / system design and chillers. During this time, Brad was a Rotating Machinery Engineer, a Maintenance Engineer two years and for another three years, an FDA plant Validation Project Manager for 13 air separation plants. Prior to his work in the gas industry, Brad worked for Pratt and Whitney Aircraft in compressor aerodynamic design and engine performance analysis for commercial aviation gas turbines from 1982 to 1994. Brad received a B.S. (Mechanical Engineering, 1982) from Lafayette College and an M.S. (Mechanical Engineering, 1986) from Rensselaer Polytechnic Institute Hartford Graduate Center. He has been a discussion group leader since 2008 and joined the TAC in September 2015.
Kazim Akhtar is the Director for Mechanical Engineering of CB&I in Houston, Texas. His department is involved in the specification, design, selection, shop test acceptance, and startup coordination of rotating and static (Heat transfer, Vessels and Material handling) equipment for major world class LNG, refinery, petrochemical, and oil and gas projects. Mr. Akhtar received a B.S. degree (Mechanical Engineering) from Texas A&M University and an M.S. degree (Industrial Engineering, Management) from the University of Houston. He is an active member of API, AICHE, ASME, a registered Professional Engineer in the State of Texas.
Kenneth Atkins is a Senior Staff Engineer at Engineering Dynamics, Incorporated (EDI). He has over 30 years of experience with rotating machinery and structural dynamics. Prior to co-founding EDI in 1982, he was with Southwest Research Institute and Exxon Chemical Americas. Ken has authored several technical papers on machinery dynamics. He has lectured frequently at the Turbomachinery and Pump Symposia, including both a tutorial and a short course. He also presents various topics at EDIs annual seminar on rotating and reciprocating machinery dynamics. Mr. Atkins received a B.S. Degree in Engineering Science from Trinity University in 1978. He is a member of ASME, several API committees, and is a Registered Professional Engineer in the State of Texas. He joined the TAC September, 2012.
Leonardo Baldassarre is currently the Engineering Ldr for Compressors, Expanders & Electrical Systems with General Electric Oil & Gas Company, in Florence, Italy. He is responsible for all requisition, and standardization activities as well as for detailed design of new products for centrifugal compressors, turboexpanders, auxiliaries, electric motors & shaft line integration. Dr.Baldassarre began his career with General Electric Nuovo Pignone in 1997. He has worked as Design Engineer, R&D Team Leader for centrifugal compressors in Florence, Product Leader for centrifugal and axial compressors, and Requisition Manager for centrifugal compressors both for Florence and Le Creusot teams. He is active member of the Turbomachinery Symposium Advisory Committee and represents GEO&G in the API617 Committee. Dr. Baldassarre received a B.S. degree (Mechanical Engineering, 1993) and Ph.D. degree (Mechanical Engineering / Turbomachinery Fluid Dynamics, 1998) from the University of Florence. He has authored or coauthored 30+ technical papers, mostly in the area of fluid dynamic design of 3D transonic impellers, rotating stall, and rotordynamics. He presently holds 10 patents.
Bruce Bayless works for Valero Energy Corporation in San Antonio, Texas. He has been a member of the advisory committee since 2004.
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Gampa I. Bhat is the President of MHI Compressor International Corporation in Houston, Texas, USA. He also serves as the Chairman of the Board of Directors. MHI Compressor International Corporation (MCO-I) is part of Mitsubishi Heavy Industries Compressor Corporation, Japan. Bhat is building the infrastructure to support Application Engineering, Marketing, Commercial, Sales, After Sales and manufacturing facilities to support Compressor Manufacturing Globally. Bhat was Chief Machinery Engineer before he retired from Exxon Mobil Chemical Company worldwide where he was responsible for engineering, manufacturing support, technology development, mega machinery project startups and troubleshooting. He is well recognized in the industry for his leadership, decision-making and leading the organization for success. His passion for business and employee growth is one of his key attributes. He has been an active member of the Turbomachinery Advisory Committee with Emeritus Status. Bhat holds a masters degree in Chemical Engineering from West Virginia University. In his spare time he enjoys golfing, reading and gardening.
Meherwan P. Boyce is Chairman of The Boyce Consultancy Group, LLC, in Houston, Texas. He has 40 years of experience in the turbomachinery field, with 30 years in the design of compressors and turbines. His 15 years in academia include being Professor of Mechanical Engineering at Texas A&M University, and Founder of the Turbomachinery Laboratories and the Turbomachinery Symposium. Dr. Boyce has authored more than 130 technical publications and several books, including Gas Turbine Engineering Handbook, Cogeneration & Combined Cycle Power Plants, and Centrifugal Compressors, A Basic Guide. He has taught over 150 short courses globally attended by over 4500 students representing 400 companies, and is a Consultant to the aerospace, petrochemical, and utility industries. Dr. Boyce received a B.S. and M.S. degree (Mechanical Engineering) from the South Dakota School of Mines and Technology and the State University of New York, respectively, and a Ph.D. degree (1969) from the University of Oklahoma.
Dag O. Calafell, II is the Chief Machinery Engineer in ExxonMobil Upstream. His 35 year experience began at Exxon downstream machinery reliability research. Since 2003 he has worked in ExxonMobil upstream production and projects. For twelve years in-between he led machinery design, manufacturing, quality, business development, and general management positions for oil and gas industry products. Dag has published papers on machinery and flow phenomena, and holds a few patents.
Mr. Calafell has BS/ MS degrees in Mechanical Engineering from Clarkson University, and subsequently attended Columbia University. Dag has served on TAMU Multi-Phase Pump User’s Group Advisory Board and on several API committees for pump and compressor standards. He has served as Associate Editor for the Society of Tribologists and Lubrication Engineers, and been active in the Hydraulic Institute, the Society of Reliability Engineers, the Society for Maintenance and Reliability Professionals, and is a member of ASME. He joined the TAC in September 2013.
Dara W. Childs, Ph.D., P.E., (Emeritus Member) was Director of the Turbomachinery Laboratory from 1984 to 2018 and held the Leland T. Jordan Chair in Mechanical Engineering at Texas A&M University. He received B.S. and M.S. degrees (Civil Engineering, 1961, 1962) from Oklahoma State University, and his Ph.D. (Engineering Mechanics, 1968) from the University of Texas. He was named ASME Fellow Member in 1990, and received ASMEs Henry R. Worthington Medal in 1991. Dr. Childs’ expertise is in dynamics and vibrations, with an emphasis in rotordynamics. He has conducted research and engineering projects for NASA, DOD, and private firms. Current research includes: high pressure testing honeycomb and hole-pattern gas damper seals; testing high pressure laminar oil seals; force measurements in magnetic bearings using fiber-optic strain gauges. Dr. Childs has authored numerous reviewed publications related to rotordynamics and vibrations, and the book, Turbomachinery Rotordynamics. He is presently completing a new dynamics book entitled, Dynamics in Engineering Practice.
C. Hunter Cloud is President of BRG Machinery Consulting, LLC, in Charlottesville, Virginia, a company providing a diverse range of rotating machinery technical services. He began his career with Mobil Research and Development Corporation in Princeton, NJ, as a turbomachinery specialist responsible for application engineering, commissioning, and troubleshooting for production, refining and chemical facilities. During his 11 years at Mobil, he worked on numerous projects, including several offshore gas injection platforms in Nigeria as well as serving as reliability manager at a large US refinery. Dr. Cloud received his BS (Mechanical Engineering, 1991) and Ph.D. (Mechanical and Aerospace Engineering, 2007) from the University of Virginia. He is a member of ASME, the Vibration Institute, and the API 684 rotordynamics task force. He joined the TAC in September 2012.





Mr. Gonzalez previously worked for Enterprise Products who currently operates machinery over 3 MM installed horsepower in Natural Gas and NGL Processing Plants and over 50,000 miles of pipelines transportation various NGLs, and Natural Gas, Crude and Refine Products in the USA. The Reliability Department at Enterprise headed by Mr. Gonzalez was primarily responsible for providing technical support to operations and maintenance on all rotating equipment. Enterprise currently operates over 385 gas turbine compressor and pump packages, and over 450 reciprocating compressor packages.
Mr. Gonzalez has coauthored several technical papers for Turbo Machinery Symposium and ASME Power Gen as well as articles on Improving Reliability in various publications. Mr. Gonzalez graduated from the University of Houston with a Bachelor’s degree in Mechanical Engineering in 1990.

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Malcolm Leader is a Turbomachinery Consultant and Owner of Applied Machinery Dynamics in Dickinson, Texas. He is currently involved in the design, testing, modification, and installation of rotating equipment. He spends time doing theoretical design audits and working in the field implementing changes and overseeing installations. Mr. Leader has written several papers on the subjects of experimental rotordynamics, bearing design, design audits for rotating equipment, and practical implementation of rotordynamic programs.






Mr. Miranda received a B.S. degree (Mechanical Engineering) from Universidade Federal do Rio de Janeiro and a M.S. degree (Industrial Engineering) from Universidade Federal Fluminense. He has authored several technical papers on turbomachinery testing, low and high speed balancing, compressor selection, RAM analysis and LCC analysis. He is a member of the Turbomachinery Symposium Advisory Committee since 2007, and currently is an Emeritus Member.















