Most cGMP facility projects start with great intent but stumble on the same seven mistakes — layout, classification, utilities, documentation, automation, change control, and validation planning. Recognising them upfront saves crores in rework.
1. Inadequate Site Master Plan
Building Phase 1 without thinking about Phase 2 and 3. Future expansion zones not blocked. Utility headers not sized for expansion load.
2. Wrong Area Classification
Classifying based on perceived comfort rather than process risk. Either over-classifying (waste of capex) or under-classifying (audit risk).
3. Utility Sizing on Nameplate Ratings
Calculating compressed air, chilled water, and electrical loads on equipment nameplate ratings instead of true operating diversity factors.
4. Documentation as After-Thought
URS, FDS, HDS, DQ, IQ, OQ, PQ done sequentially after construction. Should be integrated with engineering from day one.
5. No Automation Strategy
BMS, EMS, SCADA, and SAP integration treated as later add-ons. Result: silos, data integrity issues, and audit findings.
6. Weak Change Control
Mid-project changes accepted without formal impact assessment. Cost, schedule, and validation impacts not documented.
7. Validation Plan Built Backward
Validation strategy built after IQ instead of being defined at URS stage. This creates re-work, re-tests, and protocol revisions.
Conclusion
cGMP facility planning is a discipline, not a checklist. The best facilities are planned by teams who understand operations, audits, and engineering as one integrated practice.
At H&G, our cGMP facility planning practice covers OSD, sterile, biotech, API, and nutraceutical sectors. Contact us for site master planning or facility design review.