CEP: January 2019 One of the main objectives of hot work safety is to prevent the interaction of an ignition source and a flammable mixture. This seemingly simple objective can be complicated by the geometry, environment, and conditions surrounding the hot work. History has shown that incidents can occur despite adherence to regulations, rules, and safe work practices. Other topics in this issue include: The CalTech 6: the first all-female ChE class; optimizing fan performance; nonlinear control and catalyst replacement economics. Editorial Engineering Stories When I took on the role of senior director of publications last January and learned that my major goal for 2018 was to launch a new journal — the Journal of Advanced Manufacturing and Processing (JAMP) — I was more than a little nervous. I had never been involved with academic, peer-reviewed research publishing, let alone the start-up of a new journal. My manager assured me it would be fun, but I wasn't convinced. ... Read more Share The Caltech 6: America’s First and Only All-Female Class of ChEs January2019News FeatureNidhi SharmaThe lives of six women reflect how far we have come, and how much further we have to go. Optimize Fan Performance January2019Back To BasicsVern Martin, P.Eng., Donovan Martin, P.Eng.A fan upgrade can be a win-win. Understand the basics of fan operation to achieve better fan performance and reduce energy consumption. Select the Right Nonlinear Control Technique January2019InstrumentationTom NolanNot all systems are compatible with a PID controller. Simple methods can maximize the control performance in nonlinear systems. Evaluate Catalyst Replacement Economics: Part 1 — Periodic Replacement January2019Reactions and SeparationsGary Sawyer, P.E.When is it time for fresh catalyst in your fixed-bed reactor? This article gives you the tools to determine the optimal replacement interval. Is Your Hot Work Safety Zone Actually Safe? January2019SafetyDelmar Morrison, Ryan J. Hart, P.E., Eric Peterson, Morgan ReedHot work safety zone boundaries are often based on fixed criteria, which fail to take into account changing conditions at the worksite and undetected gas leaks. Copyright Permissions: Would you like to reuse content from CEP Magazine? It’s easy to request permission to reuse content. Simply click here to connect instantly to licensing services, where you can choose from a list of options regarding how you would like to reuse the desired content and complete the transaction.