The owner or operator must perform a process hazard analysis (PHA) appropriate to the complexity of each covered process, prioritised by a documented rationale (hazards, employees affected, age, operating history), using What-If, Checklist, What-If/Checklist, HAZOP, FMEA, Fault Tree or an equivalent method (OSHA 1910.119(e) PHAs are acceptable). It must address the process hazards; previous incidents with catastrophic potential; engineering and administrative controls and their interrelationships, including early-warning detection and standby or emergency power, ensuring that release prevention and detection monitoring has standby or backup power for continuous operation; consequences of control failures; stationary source siting (placement within the facility, nearby sources and proximity to the public); human factors; a qualitative evaluation of safety and health effects of control failure; natural hazards; gaps between the codes and standards the process was built to and the current versions; and, for processes in NAICS 324 and 325, a safer technology and alternatives analysis (STAA) considering in order inherently safer technology or design, passive, active and procedural measures, performed by a team with process expertise including someone who works in the process. For NAICS 324 and 325 processes within 1 mile of another source with a 324 or 325 covered process, NAICS 324 hydrofluoric acid alkylation processes, and 324 or 325 processes with an RMP-reportable accident since the last PHA, the owner must also determine and document the practicability of the inherently safer options considered (and how), describe to EPA any implemented, and implement at least one passive measure or inherently safer design (or active and procedural measures of equivalent risk reduction), else at least one active measure, else a procedural measure, documenting why any passive or active measure is impracticable (not solely on reduced profits or increased costs). The PHA team needs engineering and operations expertise, an employee experienced in the process and a member knowledgeable in the method; findings must be addressed through a system with documented resolutions, a written schedule and communication to affected employees; PHAs are revalidated at least every five years and kept, with resolutions, for the life of the process.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.