February 2012 | AIChE

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February 2012

Gabriel Loh

Mr. Gabriel Loh received his Bachelor of Engineering (Chemical Engineering) from The University of Queensland, Australia in 2006 and is currently pursuing a Master of Science (Chemical Engineering) in The National University of Singapore. In 2007, he joined the Process Science and Modelling research programme at the Institute of Chemical and Engineering Sciences (ICES), one of the several research institutes of The Agency for Science, Technology and Research (A*STAR) in Singapore as a Research Officer. Gabriel is a member of the Kilo-Lab and the INtegrated COntinuous Multi-purpose...Read more

Joseph Hartvigsen

Entering the solid oxide systems field from a defense aerospace simulation background, Joe's work was initially focused on detailed multi-physics simulations of SOFC stacks. He also applies analytical models to stack operation and ceramic manufacturing processes used in the fabrication of fuel cell components.

Joe earned his B.S. in Chemical Engineering from Brigham Young University and his M.S. in Chemical Engineering from Iowa State University of Science and Technology. His graduate research was conducted at the Ames Laboratory of the DOE on the topic of "The preparation of...Read more

Peter G. Herena

Mr. Hereña has twelve years of experience in the design and installation of control systems and the implementation of safety instrumented systems for the process industries. Mr. Hereña is a Senior Engineer at Kenexis and responsible for facilitating HAZOP and SIL Selection. Additionally, he has extensive experience in engineered safeguard design basis development and verification/validation projects. Mr. Hereña began his career with UOP, a licensor of process units to the petroleum and petrochemical industries, where he performed field verification of control systems at customer sites, and...Read more

Jimmy D. Kumana

Mr. Kumana holds a masters degree in chem eng from the Univ of Cincinnati, and has more than 35 years of experience in process design and energy/water optimization, working for both manufacturing and engineering design companies before establishing K&A in 1997, specializing in Process Integration (Pinch Analysis). He has been a consultant to major corporations world-wide including Shell, Amoco (BP), Dupont, Monsanto (Solutia), Union Carbide (Dow), Enron, Saudi Aramco, SABIC, Mitsubishi Heavy Industries, and SASOL, as well as to US Dept of Energy and EPRI. He has authored or co-authored...Read more

Edward M. Marszal

Edward M. Marszal is the President and CEO of Kenexis, a technical safety consultancy and software provider. He holds a BS in chemical engineering from The Ohio State Univ. He is a fellow of the Inter­national Society of Automation (ISA) and member of the ISA 84 and IEC SC65 committees that publish standards for the design of safety instrumented systems.Read more

Don D. Nguyen

Mr. Nguyen has been working with process safety management since the standard was promulgated by OSHA in 1992. He worked for OSHA for 22 years with 15 years as an assistant area director and PSM manager before retiring in 2008. While working for OSHA, Mr. Nguyen conducted and supervised over 500 accident and incident investigations. Mr. Nguyen is currently working for Siemens Oil and Gas as a principal PSM engineer. In his present role, Mr. Nguyen conducts PSM consultation and training for companies all over the U.S. as well as internationally. Mr. Nguyen is a devoted safety and health...Read more

Steven Ramsey

Mr. Ramsey is a Principal Consultant with ENVIRON in Houston, Texas. For over 20 years Mr. Ramsey has provided advisement and technical support services to a wide variety of private and public sector clients. His areas of expertise include air quality planning and management, optical remote sensing, Clean Air Act compliance, air quality permitting, Texas State Implementation Plan development and implementation, compliance auditing and greenhouse gas management. Mr. Ramsey has degrees from The Georgia Institute of Technology and the University of Central Florida in chemical engineering and...Read more

Stephen Plaisance

Mr. Stephen Plaisance is the Technical Leader for the South Region Machinery Diagnostics Services (MDS) division of GE Energy’s Measurement and Control Services. He held the position of MDS Service Manager after being an MDS Field Technician for performing mechanical diagnostics on rotating equipment. During this period he was also on the development team for various monitor solutions and portable diagnostic equipment for rotating machinery. Stephen joined the Bently Nevada Corporation in 1992 and is the Leader in the USA Southern Region on General Electric’s System 1 software, Bently...Read more

Sarah D. Alison-Youel

Ms. Alison-Youel received a Bachelor of Science degree in Mechanical Engineering with a minor in Mathematics from the University of Nevada, Reno in 2006. Since joining Ebara in 2007 she has been working with prototype engineering, taking a project from concept through to final testing. Currently Sarah is the Project Engineer for the first two-phase Tandem ExpanderTM, two of which have been installed in a Polish Oil and Gas LNG plant in Poland. Sarah has several research papers published in the American Institute of Chemical Engineers and the International Symposium on Transport Phenomena...Read more

Valerie Barth

Ms. Valerie Barth serves as a Principal Consultant in Trinity Consultants’ Baton Rouge, Louisiana office. She has been involved in the preparation of Title V, PSD, and state air permit applications. Ms. Barth has also been involved in regulatory compliance projects pertaining to MACT, NESHAP, and NSPS regulations and historical PSD audits for various industries including chemical processing, petroleum refining, oil and gas, and pulp and paper. Ms. Barth is an instructor for several of Trinity’s courses including Strategic Air Permitting in Louisiana, Strategic Air Permitting in Mississippi...Read more

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