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
CFR Part: 
CFR Title: 

Content:
onal topographic evidence as it relates to the potential for channel migration or diversion is needed. This description should be accompanied by data where possible and should be sufficient to make an assessment of the possibility of channel migration or diversion near the site that may affect SSCs important to safety. 3. Impact of Ice Effects on Channel Migration or Diversion: To meet the requirements of GDC 2, GDC 44, 10 CFR 52.17 and 52.79, and 10 CFR Part 100, estimates of the most severe ice-induced flooding effects due to channel migration or diversion are needed. These estimates should be consistent with the estimates by the applicant and associated with staff’s review associated with SRP Section 2.4.7 “Ice Effects.” 4. Evidence of Human-Induced Channel Diversion: To meet the requirements of GDC 2, GDC 44, 10 CFR 52.17 and 10 CFR 52.79, and 10 CFR Part 100, an assessment of the potential for human-induced channel diversion, in the vicinity of the site (e.g., land-use 2.4.9-7 Draft Revision 4 – September 2018 changes, diking, channelization, river bank armoring or failure of such structures) is needed. An assessment of high- and low-water levels during in response to channel diversion should be provided. These assessments should be consistent with staff’s review associated with SRP Sections 2.4.3 “Streams and Rivers” and 2.4.11 “Low Water Considerations.” 5. Flooding of Site Due to Channel Migration or Diversion: If channel migration or diversion is found to be consequential to defining the plant’s design basis flood elevation, an assessment of that flood level is needed to meet the requirements of GDC 2, GDC 44, 10 CFR 52.17 and 10 CFR 52.79, and 10 CFR Part 100. If this flood-causing mechanism if found to be consequential, then, the material to be reviewed should be consistent with that described in SRP Section 2.4.3 “Streams and Rivers.” This information can be represented through the use of inundation maps of the reactor site. The