Condition Monitoring Alarms

What this topic covers

Thresholds, persistence, rate-of-change and prioritization without creating alarm floods.

Core ideas

An alarm should prompt a defined human or automated response.

Too many low-value alarms can hide the few that require attention.

Alarm quality is measured by usefulness, timeliness and response—not by count.

Program tradeoffs

Data must retain asset identity, timestamp, units and operating context to support reliable trend analysis.

What good evidence looks like

Anomalies and model predictions are decision support, not automatic proof of failure.

Lifecycle perspective

OT security should protect monitoring availability and integrity without interfering with safe operation.