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ChemChronicles: ‘Eye it Before You Buy It,’ The Invention of Cellophane

Transparent polymer film started with an accident . . . and spurred a packaging revolution One night in Paris, in 1900, Swiss chemist Jacques Brandenberger was enjoying dinner in a restaurant when he noticed that a fellow patron had spilled…

Letters

Atmospheric Storage Tanks This refers to the [Engineering Practice] article “Designing Atmospheric Storage Tanks” [March 2017, pp. 77–82]. It is interesting and informative. Please convey my congratulations to the author. Some of the suggested methods may lead to expensive designs…

Letters

Control Engineering for Chemical Engineers The March 2017 Chemical Engineering issue features the article “Control Engineering for Chemical Engineers” [pp. 42–50]. The author has brought up an interesting topic that should concern everybody working at any chemical processing facility. I…

Letters

Steam Concepts I enjoy reading your magazine and find many of its articles informative and helpful. I noticed several errors in the [Facts at Your Fingertips] article, Steam Concepts, [February 2017, p. 32] and wanted to bring them to your…

Member Exclusive

Current economic trends: December 2016 CEPCI

The preliminary value for the December CE Plant Cost Index (CEPCI; the most recent available) was higher than the previous month’s value by a signficant margin for the second consecutive month. The jump was due to a rise in the…

Letters

Pump Safety: Flirting With Disaster I just finished reading your article (Pump Safety: Flirting With Disaster, pp. 67–70, December 2016) and want to indicate the following: In the third example, the text said that the HBEP/HSO is 0.7, but in…

Letters, postscripts and corrections

Communicating in acronyms I finally got around to reading the May 2016 issue of Chemical Engineering. I was fascinated with the editorial [p.5]. I have been an engineer since 1968 and in the EH&S (environmental, health and safety) field since…

Letters to the Editor: Carbon Steel Piping

At the April 2016 Seattle meeting of the ASME B31.3 Process Piping Code Committee, a presentation — a cautionary note in a manner of speaking — was given by Barry Messer of Fluor Corp. (www.fluor.com). The topic was the unexpectedly…

Designing for distillation

I read your article “Flooded Condenser Controls: Principle and Troubleshooting” [ Chem. Eng., January 2016, pp. 37–49]. The article was very informative. Thank you for sharing your knowledge and experience. I need your guidance related to Figure 4b. In the…

On the subject of ethics

Thank you for writing this article [Engineering Ethics Survey: What’s Your Opinion?, Chem. Eng. October 2015, pp. 50–55]. Many of us, as we proceed through our careers, are faced with some difficult choices, which can have quite an impact on…