HAZOP Worksheet for Reactor Systems (ISO 14971 Compliant)

The HAZOP Worksheet for Reactor Systems bridges traditional process hazard analysis (PHA) methodology with the formalized risk management lifecycle mandated by ISO 14971. Unlike generic HAZOPs, this version mandates explicit documentation of risk estimation (severity × probability), risk acceptability criteria (e.g., ALARP or predefined risk matrices), and traceable risk control measures—including verification and validation evidence—ensuring each identified hazard is managed to an acceptable residual risk level. The worksheet enforces rigorous linkage between deviations (e.g., 'High Temperature' in an exothermic batch reactor) and safety requirements, with columns dedicated to ISO 14971 elements: Hazard Identification, Risk Analysis (qualitative/semi-quantitative), Risk Evaluation (vs. defined acceptability thresholds), Risk Control Measures (engineering controls, procedural mitigations, alarms), and Post-Production Surveillance (e.g., thermal runaway monitoring during scale-up). It supports interdisciplinary team collaboration (process engineers, safety specialists, quality assurance, regulatory affairs), requires traceability to design inputs and verification protocols, and facilitates audit readiness for FDA, EMA, or notified body assessments—particularly critical for reactors used in pharmaceutical or biotech manufacturing where product safety directly impacts patient risk. Integration with digital systems (e.g., LIMS, MES, or risk management software) enables automated reporting, version control, and real-time risk dashboarding aligned with ISO 14971 Clause 7 (Production and Post-Production Information).