Issuing body
ISA
Latest edition
2016 (R2023)
Region
USA, Global
Equipment items
1
Scope
Alarm system lifecycle, philosophy, rationalization, KPIs.
Key requirements (6)
- Alarm management lifecycle.
- Alarm rationalization: every alarm has a defined cause, consequence, response, time to respond.
- Alarm rate target: ≤ 1 alarm/10 min steady state (≤ 6/hr) per operator.
- During upset: ≤ 10 alarms in first 10 minutes.
- Alarm priority distribution: ~80% low, ~15% medium, ~5% high (rough industry guideline).
- Suppress alarms in startup/shutdown/maintenance (state-based).
Related standards (1)
Applied to 1 equipment item
Instrumentation & Control