How does Process Safety Management (PSM) influence design decisions?

PSM elements affecting design: Process Hazard Analysis - HAZOP, What-If studies identify design changes needed. Mechanical Integrity - design for inspectability, specify correct materials. Management of Change - design modifications require MOC review. Pre-startup Safety Review - verify design matches drawings, procedures ready. Operating Procedures - design must support safe operation. Process Safety Information - complete documentation of design basis. PSI requirements: chemical hazards, technology basis, equipment design limits. Design implications: inherent safety considerations, adequate instrumentation for safe operation, maintainability, compliance with codes/standards, clear design basis documentation. PSM compliance is not optional - OSHA requirements for facilities with threshold quantities of hazardous chemicals. Design engineer must understand PSM interface requirements.