Industrial Historian Tag Strategy for Better Decisions

Historian programs fail when tags are added without purpose. Practical strategy defines why each tag is stored, who uses it, and what decisions it supports.

Common Failure Points

• Historian contains high volume but low decision value tags.
• Compression settings distort fast process events.
• No retention policy by business value or compliance needs.

Control Strategy

• Define tag tiers: regulatory, operational, optimization, diagnostic.
• Set sampling and exception settings by process dynamics.
• Assign ownership for tag quality and metadata completeness.

Implementation Steps

• Audit top tag groups by usage and remove low-value duplication.
• Tune compression/sampling for critical control and quality signals.
• Publish tag governance standard for all new projects.

KPIs to Track

• Tag completeness for critical assets
• Data gap frequency
• Query response time for operations dashboards
• Analyst rework hours due to bad historian context

30-60-90 Day Plan

• Day 1-30: inventory and classify historian tags.
• Day 31-60: optimize settings for critical signal groups.
• Day 61-90: enforce standards in project delivery workflow.