CAMS APM identified an anomaly in the SCR Differential Pressure (DP) values and notified the customer. Following a planned outage, it was observed that the differential pressure gradually increased from approximately 1.4 in.H2O to 3.0 in.H2O over a one-week period. This deviation prompted the site to raise a work order to inspect the equipment during the next outage, focusing on potential fouling and its source.
During the subsequent outage, the site conducted thorough cleaning procedures to address fouling in the SCR. The cleaning targeted potential contaminants contributing to the increased pressure. Afterward, CAMS APM monitored the system with additional run time to confirm the effectiveness of the cleaning efforts.
Post-cleaning, the runtime data indicated a favorable trend, confirming the efficacy of the maintenance actions. CAMS APM then updated the monitoring system with the new baseline values, ensuring accurate detection of any future deviations in SCR DP readings. The issue was officially resolved within one outage cycle with improved system performance, minimizing operational disruption.