(179e) Stripper Tower Capacity Problem Resolved Using Gamma Scanning Technology

Process Engineers have a wide array of tools to investigate operational problems. These can range from studying process variables such as temperature, pressure, flow rates, and analytical results to more advanced modeling and simulation.  On many occasions the scope or priority of the troubleshooting effort is governed by a critical situation and the potential seriousness of a problem requiring quick action and parallel efforts.

Gamma scanning has gained in popularity over the years because it quickly provides process information that is not available from any other source, is real time, and non-intrusive. The technology is flexible and can be used at the onset of a problem to diagnose internal hydraulic issues, used later in an investigation to support other operating parameters pointing to where a problem may lie or validate a hypothesis related to what a particular problem may be.

This presentation offers a troubleshooting case study concerning a waste water stripper tower. A gamma scan was used to help find the root cause of a loss in capacity prior to shut down and entry.  The gamma scan determined where problems existed and allowed focus during shutdown resulting in a shorter outage.

This presentation includes system description, explanation of trouble-shooting techniques used, gamma scan results and pictures from inside the tower during the outage inspection corresponding to features detected by the gamma scan.