Increased Plant Security as a result of sustainable Alarm Management
Alarm rationalization should be an integral part of a sustainable alarm management system.
The distinction between important and unimportant messages and their weighting are essential.
An inaccurate prioritization means a high workload for the operator in the control center. Alarms with wrong priority could have significant negative consequences:
- Too many alarms with a high priority lead to higher workload.
- Important alarms with too low priority may be dangerous for plant security.
Plant Historian AR - Alarm Rationalization - allows to determinate alarm priorities according to an individually created concept, alarm reasons are documented, procedural instructions and recommendations are included.
With the help of an intuitive decision tree, actual alarm priority is determined. A change of an alarm priority will automatically start the MOC process. When the MOC process is finished (confirmation of the changes according to the dual-control principle) the changes can be implemented into the control technology. Subsequently, Plant Historian AR will check the correct execution of the priority change.
Prioritization prevents the ignorance of critical messages (desensitization of operators).
Combined with Plant Historian AM (Alarm Management), Plant Historian AR (Alarm Rationalization) represents an essential part of systematic alarm management.