CEP: February 2015 "Ethics - Examining Your Engineering Responsibility" looks at several well-known incidents, focusing on their nontechnical causes. It then discusses how to avoid potentially difficult spots and what you might do if you find yourself in one. Other topics in this issue include controlling column pressure via hot-vapor bypass, modeling chemical reactors, and measuring viscosity. Editorial Navigating Ethical Dilemmas It seems not a day passes without news reports of a politician or corporate executive taking bribes, engaging in insider trading, or getting caught up in some other ethical dilemma. As engineers, though, we will more likely find ourselves in situations that have subtler, less-obvious ethical undertones. Read more Share Ethics — Examining Your Engineering Responsibility February2015Career CatalystDeborah GrubbeEngineering ethics frequently has nothing to do with technology and everything to do with communication, thought and decision-making patterns, and conflicts around time and money. Control Column Pressure via Hot-Vapor Bypass February2015Back To BasicsDaryl Hanson, Henry Z. KisterHot-vapor bypass employs a flooded condenser located at ground level to control distillation tower pressure. It offers capital cost savings, but can be tricky to implement. This article offers guidance on designing and troubleshooting a hot-vapor bypass system. Modeling Chemical Reactors February2015Reactions and SeparationsEd FontesModels can be used to describe chemical reactors to help solve problems and optimize processes, while saving time, money, and resources. Measure Viscosity Effectively February2015InstrumentationRobert McGregorKnowledge of a material’s rheological behavior can be of value for research and development, process design, and quality control. This article provides a foundation for understanding viscosity measurement. Copyright Permissions: Would you like to reuse content from CEP Magazine or purchase an article reprint? Learn more about Reprints and Permissions.