David Strobhar, P.E., is the founder of Beville Engineering, Inc., which conducts human factors engineering analyses of plant modernization, operator workload, and alarm/display systems for major energy and chemical companies (Email: dstrobhar@beville.com). He has evaluated operator workload at more than 1,000 units at more than 80 different sites, and he has participated in more than 150 alarm rationalizations. He is a founder of the Center for Operator Performance — a collaboration between operating companies, distributed control system (DCS) suppliers, and academia that researches human factors issues in process control. Strobhar has a BS in human factors engineering from Wright State Univ. (Dayton, OH), where he now serves on the engineering advisory board. He is a registered professional engineer in Ohio.