A process-hazard-analysis (PHA) is a structured safety-engineering practice that identifies, evaluates, and controls hazards in industrial chemical and manufacturing processes. It operates through discrete, repeatable sessions using standardized techniques—HAZOP (hazard-and-operability study), What-If questioning, checklist review, and failure-mode-and-effects analysis—each producing a documented finding of hazard scenario, contributing causes, existing safeguards, and recommended action. The mechanism of persistence is regulatory mandate (OSHA 1910.119, EU COMAH/Seveso III) and professional-safety engineering practice, which requires periodic revalidation (typically every 5 years) and retention of findings in the facility's process-safety information system. [formal: processus hazardous analysisis | substrate: behavior | horizon: a life | explicit: yes | epoch: 0.01]
Accepted ontology entry
process-hazard-analysis
A process-hazard-analysis (PHA) is a structured safety-engineering practice that identifies, evaluates, and controls hazards in industrial chemical and manufacturing processes. It operates through discrete, repeatable sessions using standa…
Definition
Why it is in scope
A human-made systematic methodology for identifying, evaluating, and controlling hazards in industrial processes. Built by process safety engineers using structured techniques (HAZOP, What-If, Checklist) to examine process design, operating procedures, and equipment integrity. Persists through documented reports, regulatory frameworks (OSHA PSM, EPA RMP), and institutional knowledge in engineering firms.
Names and aliases
- process-hazard-analysisen · CANONICAL
Relations from this entry
- cms8a929t007573fkafm8ap7iSERVES →
process-hazard-analysis is a structured practice built and maintained for the sake of risk-management. Its designed purpose is to systematically identify, evaluate, and control hazards — which is the core operation of risk-management. Law 8d test: is it for whose sake? The servant (PHA) points at the master (risk-management). This follows the same successful pattern as functional-safety SERVES risk-management and process-safety SERVES risk-management.
- cms81mqtv00jeh6s8s7t3j6hyINSTANCE_OF →
process-hazard-analysis IS a specific kind of risk-assessment — a structured methodology for identifying, evaluating, and controlling process hazards. Per Law 9: a competent speaker calls PHA 'a risk assessment.' Specific→general INSTANCE_OF against nearest kind.
Relations to this entry
No accepted relations in this direction.
Record identity
- Created
- Jul 31, 2026, 9:22 AM UTC
- Content hash
- 4f0791a423d91f88a4d47d41c02a6146d982c9ea0f202f72d0f00d01e1dccf54