Nalco monitors the corrosiveness of a customer's process through the use of corrosion coupons, which are representative metal samples placed directly in the process streams. The measured corrosion rates are the result of process operations not only at the point in time when the measurement is taken, but the entire time range in which the coupon was exposed to the process flow. In the past, there was no real clean and accurate way to represent this data in the PI System, as the measurement is not indicative of a particular point in time—but rather, for the entire time range. Now, with the advent of PI Event Frames, Nalco has a clean and precise way to capture this data and relate it to all of the process conditions that occurred during the coupon's time in the system.
Randy Esposito, Ph.D., is a Senior Industry Development Manager at Nalco. Randy serves as the Group Lead for Data Management within the Energy Services Automation Center of Excellence at Nalco. He received his B.S. in Chemical Engineering from Lehigh University and a Ph.D. in Chemical Engineering from Princeton University with a focus on process modeling and optimization. Prior to joining Nalco, he held various positions at Praxair including Program Development Manager for the packaged gases business and a Development Associate in the Advanced Control and Optimization group creating first of a kind on-line process modeling and optimization systems. He also holds five U.S. patents in the area of control system design and process operations.