Installation
The PEMS for boiler 54-F-1 was installed on a computer system running the UNIX operating system. Through a custom designed interface, the PEMS communicates with the DCS. It receives the input sensor data from the DCS, predicts NOx emissions and writes back the results to the DCS. These results are then archived in the data historian for reporting. The team-designed control console screens show the real-time NOx prediction results and the alarm status of the input sensors. Console operators can monitor the PEMS performance and take appropriate actions when sensors are drifting outside the model bounds, sensors are failing, or when the PEMS is down.