Document: NUREG-0800
Document ID: 496b5bd8-c9a2-4cf6-a703-e41c51e155ec
Document Type: srp
Title: CHANNEL MIGRATION OR DIVERSION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1819/ML18190A201.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.9
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pplicant followed applicable regulatory guidance, performed independent calculations, and/or validated appropriate assumptions. While the reviewer may summarize or quote the information offered by the applicant in support of its application, the staff should clearly articulate the independent basis for the staff’s conclusions that the relevant regulatory criteria have been met. The staff verifies that the applicant has provided sufficient information to complete the review, and that the applicant’s analyses and calculations (as applicable) support the conclusions described in the safety analysis report. For the purposes of the SER, the ultimate conclusion to be reached by the reviewer is that the applicant has addressed the acceptance criteria and in doing so establishes whether this flood-causing mechanism is applicable to the site. If found to be applicable, the acceptance criteria next call for a determination as whether channel migration or diversion-based flooding is consequential to defining the design basis at the site. If found to be consequential, the acceptance criteria call for the submittal of the following to establish the design basis: an inundation map depicting water surface elevations across the reactor site, information on flood event duration, and associated effects consistent with projected flooding depths and durations. As mentioned above, the staff should state the bases for confirming the conclusions reached by the applicant. 1. Construction Permit, Operating License, and Combined License Reviews The following statements should be preceded by a summary of the site characteristics and parameters used for the plant: “As set forth above, the applicant has presented and substantiated information relative to the effects of channel migration or diversion important to the design and siting of this plant. The staff has reviewed the available information provided and for the reasons given above, concludes that the identification and consideration