24 March, 2026

OQ challenges often originate earlier: a focus on Installation Qualification

In pharmaceutical GMP projects, issues identified during Operational Qualification (OQ) rarely originate at that stage.

They are often the consequence of gaps introduced earlier, during Installation Qualification (IQ).

IQ is not a formal checkpoint. It is a critical phase where the installed system is verified against design documentation, and where traceability, documentation, and system integrity are established. When inconsistencies remain at this stage, they tend to surface later, under tighter timelines and increased operational pressure.

Across utility systems such as purified water, clean steam, compressed air, and HVAC, several recurring points of attention can be observed.

1. Engineering documentation not aligned with the installed system

P&IDs, specifications, or instrument lists may not reflect modifications made during construction. As a result, IQ activities validate documentation that no longer corresponds to the actual system.

2. Incomplete weld documentation and traceability

Missing weld logs or absent welder qualification records can introduce significant risk, particularly for hygienic-critical systems where full traceability is expected.

3. Missing or expired calibration certificates

Instrumentation may be physically installed but not supported by valid calibration records, impacting the reliability of process data and compliance.

4. Equipment not accessible for maintenance and calibration

Poor accessibility of valves, sensors, or instruments can create long-term operational constraints, affecting maintainability and lifecycle performance.

Each of these situations is preventable when addressed at the right stage.

A rigorous Installation Qualification ensures that the physical system, its documentation, and its traceability are fully aligned before progressing further. Addressing these points early contributes directly to smoother OQ execution and more controlled project delivery.