Document: NUREG-0800
Document ID: c97c665c-1f0f-4a2d-a4db-4e0dbd99eab3
Document Type: srp
Title: CHANNEL DIVERSIONS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0707/ML070730434.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.9
CFR Part: 
CFR Title: 

Content:
nd procedural measures proposed for its facility and the SRP acceptance criteria and evaluate how the proposed alternatives to the SRP acceptance criteria provide acceptable methods of compliance with the NRC regulations. Appropriate sections of the following Regulatory Guides are used by the staff for the identified acceptance criteria: Regulatory Guide 1.27 describes the applicable ultimate heat sink capabilities. Regulatory Guide 1.29 identifies seismic design bases for SSC important to safety. Regulatory Guide 1.59, as supplemented by best current practices, provides guidance for developing the hydrometeorological design bases. Regulatory Guide 1.102 describes acceptable flood protection to prevent the safety-related facilities from being adversely affected. 1. Historical Channel Diversions: To meet the requirements of GDC 2, GDC 44, 10 CFR 52.17, and 10 CFR Part 100, a complete history of channel diversions at and in the vicinity of the site is needed. A thorough listing of types of phenomena (landslides, channel erosion, breached dikes, etc.), locations and durations of these events, and descriptions of hydrogeological characteristics accompanying these events should be included. This description should be sufficient to establish the history of channel diversion in the vicinity of the site (this review includes the site and adjacent watersheds displaying similar channel characteristics). 2. Regional Topographic Evidence: To meet the requirements of GDC 2, GDC 44, 10 CFR 52.17, and 10 CFR Part 100, a description of regional topographic evidence as it relates to channel diversions is needed. This description should be accompanied by data where possible and should be sufficient to make an assessment of the possibility of channel diversion near the site that may affect SSC important to safety. 3. Ice Causes: To meet the requirements of GDC 2, GDC 44, 10 CFR 52.17, and 10 CFR Part 100, estimates of the most severe ice-induced channel diversion are needed. These