EEMUA
EEMUA 191
Alarm Systems — A Guide to Design, Management and Procurement
The guide that first put numbers to alarm system performance and is still the benchmark most plants are measured against, including the often-quoted targets of around one alarm per ten minutes in steady operation and a defined limit on standing alarms. It predates IEC 62682 and remains the more practical of the two to hand to an operations team, because it is written around what an operator can actually respond to rather than around a lifecycle.
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Where it is applied on this site
- Alarm management — why an operator with 400 alarms has noneInstrumentation & Control