Читать книгу Automation of Water Resource Recovery Facilities - Water Environment Federation - Страница 173

Design engineers should describe when and how local and remote alarms will be generated. The description should provide enough detail so programmers can create the appropriate software and operators will understand which responses are needed. This description will include alarm management in which specific alarms are suppressed for the same root cause. This includes a communications failure alarm suppressing all other alarms from a controller or a pump-off status suppressing a low-flow alarm.

Alarms that are escalated to a facility-wide speaker paging system or e-mail notifications should be identified for implementation in specific systems. Specific alarm limits should be included in the PCN for the alarms as a reference for the operator. These limits should be updated in the document and controller if the process or operational parameters are changed.