AAASuite
Key Features
- Automatic alarm suppression
AAASuite automatically identifies the following kinds of nuisance alarms and suppresses their repetition by the DCS functions.- Repeating HI/LO alarms caused by incorrect alarm setting
- Longstanding false HI/LO alarms caused by incorrect alarm hysteresis setting
- Oscillating HI/LO alarms caused by incorrect PID setting
- Input out of range alarms caused by overrange
- Input out of range alarms caused by minor transmitter problems
- Repeating annunciators caused by incomplete the DCS sequence
- Automatic alarm re-notification
AAASuite automatically and periodically re-notifies the following important alarms to bring them to the attentions of the operators.- Longstanding true HI/LO alarms
- Longstanding input out of range alarms caused by a broken wire
- Automatic alarm prediction
HH/LL alarms often serve as the trigger an interlock sequences that leads to an emergency shut down. AAASuite automatically predicts when a process will reach its alarm limits and issues a timely alert to operators, enabling them to intervene before a process reaches the HH/LL state. - Dynamic alarm setting (Optional)
An alarm threshold should be adjusted when there is a change in the operation conditions (e.g. grade change, load change). When such a change occurs, AAASuite automatically downloads the optimum alarm threshold(stored in a CSV format file) to the DCS. When the operation conditions change again, AAASuite uploads to this CSV format file current alarm threshold that is stored in the DCS. - Advanced and intelligent alert (Optional)
AAASuite can issue advanced types of alerts that add value in the monitoring of:- field instruments
- process equipment
- process performance
- human error
| Steps | Key function | Result |
| 1 | Suppression of repeating nuisance alarms | Nuisance alarms drastically decreased |
| 2 | Optimization of alarm setting | Nuisance alarms drastically decreased |
| 3 | Re-notification of longstanding true alarms | Alerts slightly increased |
| 4 | Prediction of critical HH/LL alarms | Alerts slightly increased |
| 5 | Addition of more advanced alerts | Alerts slightly increased |
