Jeffrey Goodwin | February 23rd, 2026
Please join Dan Ott, President of Environex, at the NAES O&M Conference in Orlando, FL for a special presentation highlighting how existing plant instrumentation can be integrated into a proactive SCR/CO system O&M program on Tuesday, March 3, 2026 at 2:45pm in the Unicorn Room.
The best way to manage and maintain your SCR is with a combination of inside and outside resources. This presentation provides a roadmap for an in-house SCR/CO system monitoring program to help determine when you should act on your own, and when you should seek outside support. We will differentiate which SCR maintenance activities are suitable for in-house staff and which ones should be outsourced to catalyst system specialists, such as system tuning, catalyst testing, and specialized maintenance.
Existing plant instrumentation (in some cases additional, depending on plant age and design) allows tracking of key SCR and CO system operating parameters that can be used for predictive system maintenance and performance monitoring. This presentation educates the audience about the parameters that should be tracked as a part of an effective SCR/CO system O&M program, what changes in these parameters mean, and the thresholds that indicate when action should be taken.
Environex will review the relevant plant instrumentation and show how it is used to track data essential to a successful catalyst system O&M program. This will include common plant instruments that may be overlooked as useful tools for SCR/CO system management, such as pressure transmitters, flow meters, and thermocouples. We will go over how various temperature, pressure, and flow measurements throughout the plant can indicate that catalyst system or HRSG maintenance should be scheduled, or that there is something else brewing in the system that could cause an emissions performance issue.
We will also dive into the value of monitoring NOx and CO emissions upstream of the catalysts. Continuous tracking of upstream emissions allows you to understand the full range of catalyst performance requirements across all unit operating modes. Combined with proper catalyst testing, this data can be used to identify the limiting operating case for your systems so that you can more effectively manage emissions risks for your plant. Including less well-known parameters, such as ammonia efficiency, in your O&M program gives you insight into when there are real changes in SCR/CO system performance that require attention. Case studies using plant operating data will be included.