The ISA-18.2 / IEC 62682 Alarm Management Lifecycle
The ISA-18.2 / IEC 62682 Alarm Management Lifecycle
What is an Alarm? (per ISA-18.2 / IEC 62682)
An alarm is an audible and/or visible means of indicating - There
must be an indication of the alarm. An alarm limit can be configured to
generate control actions or log data without it being an alarm.
to the operator - The indication must be
targeted to the operator to be an alarm, not to provide information to
an engineer, maintenance technician, or manager.
an equipment malfunction, process deviation, or abnormal condition - The alarm must indicate a problem, not a normal process condition. (e.g., pump stopped ,valve closed).
requiring a timely response. - There must be a
defined operator response to correct the condition and bring the
process back to a desired (safe and/or productive) state. If the
operator does not need to respond promptly, then the condition should
not be an alarm.