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CHEMICAL ENGINEERING PROGRESS September CODSN CErrtA 3 Volume / i. ,'k Vinyl Chloride Emission Control Measuring and Improving Productivity-- The Discussion.............................................................. How should a company tram its engineers? Should engineers set their own project goals, or should the company do that7 What is the best way to motivate engineers? 21 Two Engineering Meetings Focus on Engineering Cooperat on........................................... Photos from the WFEO meeting in Tunisia and from the VI Interamerican Congress of Chemical En gineering in Venezuela 29 LA, Meeting to Consider Energy, Environment, and Economics.............................................................. The Institute and the Alpha Chi Sigma Lectures form part of AlChE's 68th Annual Meeting program. 91 Vinyl Chloride Emission Control VCM Reduction and Control............................... Until a monomer-free PVC resin becomes a com mercial reality, the aspirator system should provide economical removal of VCM for dry blend opera tions. 41 Control Methods for Vinyl Chloride.................. Some tips on how PPG handles sample collection and analyses of VCM, and on how it handles the tricky aspects of loading operations. 45 Control of In-transit VCM...................................... The only certainties regarding VCM regulations are that they are here to stay, and that industry will have little to say concerning employee safety and plant procedures. 48 * Stripping VCM from PVC Resins....................... Here's a progress report on a stripping technique That can be used in the production of resins by the suspension process. 54 Emergency Isolation Valves for Chemical Plants............................................................................... An emergency isolation valve may cost $5,000 to install, but it may prevent a fire that would be 1.000 times more costly. 63 Economics of Ethylene Glycol Processes........... A review of current technology indicates a nearterm shift to liquid-phase acetoxylation, and for the longer-term, a mqve to synthesis gas derived processes. 72 The Flixborough Disaster........................................... The Flixborough Works explosion, which was equivalent to the force of 15 tons of TNT, killed 28 people, injured 89, and damaged 1,821 houses. 77 Basin Fermentor for Single Cell Protein.............. Single cell protein may be one way of feeding the world's billions. The basin fermentor may be an in expensive way to produce large amounts of single cell protein. 85 Books........................... Letters...................... Speak Out................. Trends..................... 2 Institute News.......... 103 Future Meetings___ 130 4 People......................... 106 Professional Services. 143 35 What's New............. 108 Advertiser's Index... 149 37 Data Service............. 119 News and Notes........ 150 Editor & Publisher Larry Resen Managing Editor John Howe Associate Editors Claudia M. Caruana Waldo B. Hoffman Publications Director F. J. Van Antwerpen Art Director Louis H. Dufault Editorial Assistants Elizabeth A. Connors Ann Ruzicka Production/Sales Service Manager Frank Grisoli Advertising Production Assistant Abigail Miranda Recruitment Advertising Coordinator Gloria Lambson EDITORIAL SOUNDING BOARD Frank Cozzarelli Union Carbide Corp.. New York, N. Y. Warren C. Fisher FMC Corp., New York, N.Y. Howard Kehde Dow Chemical, USA, Midland, Mich. Paul Stavenger Dorr-Oliver, Inc., Stamford, Conn. AS I 00021986 " CHEMICAL ENGINEERING PROGRESS (Vol. 71, No. 9) September 1975 1