ISO 12100:2019 Hazard Identification Worksheet (Excel)

ISO 12100:2019 establishes a three-stage risk assessment process: hazard identification, risk estimation, and risk evaluation. The Excel worksheet operationalizes the first stage — hazard identification — by providing standardized fields to catalog potential sources of harm (e.g., mechanical, electrical, thermal, noise, ergonomic, or hazardous substances) linked to specific machine functions, operating modes (normal, startup, shutdown, maintenance, fault), and user roles. Each identified hazard is anchored to relevant clauses of ISO 12100:2019 Annex A (which enumerates common hazard categories) and cross-referenced to applicable C-type standards or other harmonized legislation (e.g., EU Machinery Directive 2006/42/EC). The worksheet typically includes columns for hazard description, location, affected persons, contributing factors, existing safeguards, and preliminary severity/likelihood notes — enabling seamless transition to formal risk estimation (e.g., using matrix-based or numeric methods per ISO 14121-1 or ISO/TR 22100-2). Crucially, it emphasizes iterative use: hazards must be re-identified after each design modification or safeguard implementation, ensuring dynamic alignment with the standard’s principle of 'risk reduction as an iterative process'.