Methods/Probabilistic Risk Assessment
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Probabilistic Risk Assessment for External Hazards
Probabilistic Risk Assessment for external hazards extends the plant's internal-events PRA framework to account for initiating events and failure modes caused by phenomena originating outside the plant boundary. The objective is to quantify each credible external hazard's contribution to core damage frequency and large early release frequency, producing risk metrics that support risk-informed decision making, licensing, and program prioritization.
MORE INFO COMING SOON — This page is under active development. Detailed content will be available in an upcoming update to the External Hazards Knowledge System.
Return to Methods and Tools. | EPRI technical point of contact: Chris Rochon (CRochon@epri.com)
Date last reviewed: 2026-05-07