ISO 22400-2 formally defines 34 standardized manufacturing KPIs. These are grouped across areas such as equipment utilization, time management, quantity, and quality, and are intended as a common reference set for manufacturing operations.
What this means in real plants
Although 34 KPIs are defined, most regulated, brownfield environments do not implement all 34 as-is. Instead, they typically:
- Select a subset that aligns with existing OEE/NPT dashboards, MES/SCADA data structures, and reporting requirements.
- Map ISO 22400-2 definitions onto existing MES/ERP tags, data models, and time-state categorizations.
- Adapt calculation rules where legacy data models or event taxonomies do not match the standard exactly.
Applying the standard in a regulated environment also requires attention to:
- Traceability: Documenting how each KPI is sourced and calculated, especially when used in quality or management reviews.
- Validation and change control: Treating KPI logic changes like any other software or configuration change, with appropriate testing, approvals, and versioning.
- System coexistence: Avoiding “rip and replace” of existing KPI frameworks where they are already embedded in QMS, procedures, or customer reporting. In many plants, it is more realistic to cross-reference existing metrics to ISO 22400-2 than to fully replace them, given the validation burden and downtime risk.
In summary, ISO 22400-2 specifies 34 KPIs, but the operational value comes from carefully integrating a practical subset into your current MES/ERP and reporting stack, with clear mappings, governance, and documented assumptions.