1. High Blockage Prediction Accuracy:
A high degree of early blockage alert accuracy with 92% of alerts StormHarvester provided were relevant and required.
During the course of the trial there was less than 10% false positives and most importantly not a single blockage resulting in a pollution incident was missed.
2. Long-range Blockage Prediction Capability:
Early blockage formations were identified up to 8 weeks before they would have resulted in service failures.
3. Condition Based Maintenance is a Realistic Goal:
The 3 month trial enabled a shift towards a condition based maintenance approach.
4. Successful Control Room Alarm Rationalisation:
4500 alarms were generated by Wessex Water during the pilot period. However, if the StormHarvester solution had been utilised instead of the incumbent rules-based alarms system, a 97% reduction in control room alerts would have been achieved.
StormHarvester alerted only 138 times (a manageable volume) meaning Wessex Water operational and maintenance crews could respond to these ‘smart alarms’ even during periods of heavy rainfall.