Maintain Separate Logs for Preventive Maintenance in GMP Facilities

Maintain Distinct Preventive Maintenance Logs to Ensure GMP Equipment Compliance

Remember: GMP requires dedicated preventive maintenance logs—separate from breakdown records—to verify routine servicing and ensure equipment reliability.

Why This Matters in GMP

Preventive maintenance ensures that equipment remains in qualified condition, minimizes unexpected downtime, and prevents contamination. Mixing preventive logs with breakdown or emergency repair records can obscure maintenance history and create traceability issues. GMP expects clear documentation that preventive servicing has been performed as scheduled, with defined tasks, tools used, and outcomes recorded. Separate logs improve transparency, facilitate audit readiness, and support continuous performance monitoring across the equipment lifecycle.

Also Read: Install Pass Boxes with Interlock Checks to Prevent Cross-Contamination

Regulatory and Compliance Implications

FDA 21 CFR Part 211.67 requires written procedures and detailed records of maintenance activities. EU GMP Chapter 3 mandates documented preventive maintenance for all GMP-critical equipment. Schedule M requires logs showing dates, nature of service, and operator signatures. WHO GMP supports the maintenance of separate records for scheduled versus corrective actions. Auditors often compare planned maintenance schedules with logs to verify adherence. Missing, mixed, or backdated entries can result in serious compliance findings.

Implementation Best Practices

Use color-coded or uniquely numbered formats for preventive maintenance logs distinct from breakdown registers.
Schedule activities using a

validated calendar or CMMS (Computerized Maintenance Management System).

Include task checklists, calibration verification (if applicable), technician initials, and QA review in each entry.

Train engineering staff on SOP requirements for separating log entries and archiving properly.

Review logs during internal audits and incorporate data into annual equipment requalification reports.

Regulatory References

FDA 21 CFR Part 211.67 – Equipment Cleaning and Maintenance
EU GMP Chapter 3 – Preventive Maintenance Documentation
Schedule M – Equipment Maintenance Logs
WHO GMP – Equipment and Maintenance Guidelines