Methods/Deterministic Approaches
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Deterministic Approaches to External Hazard Evaluation
Deterministic approaches are a family of analytical strategies that evaluate whether a nuclear power plant's design and protection features are adequate for a specified external hazard without explicitly expressing a distribution of failure probabilities. The analyst compares hazard loads against design-basis capacities, acceptance criteria, or regulatory thresholds. If the comparison shows adequate margin, the hazard is resolved without proceeding to a full probabilistic risk assessment.
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