Document: NUREG-0800
Document ID: dfad5166-86ba-4d57-a49c-4a918bb0780d
Document Type: srp
Title: and Section 2.4.9, as described in the corresponding SRP sections.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0701/ML070100647.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.7
CFR Part: 
CFR Title: 

Content:
6. Seismically Induced Dam Failures (or Breaches): The staff reviews historical data from USGS, USACE, and the Bureau of Reclamation to evaluate potential flooding at the plant site due to seismically induced dam failures. Flooding at the site could result from single or multiple dam failures, including cascading dam failures. Breaches of water control structures that may be located above the site grade and sufficiently near safety- related SSC is also evaluated for their potential effects on flooding at the plant site. A detailed review of flooding due to dam failures is described in SRP Section 2.4.4 and is carried out by the staff in SER Section 2.4.4. 7. Flooding Caused by Landslides: The staff reviews historical data from USGS, USACE, and other local, State, and Federal agencies and entities to evaluate potential flooding at the plant site due to flood waves caused by landslides and due to the backwater effects from a downstream blockage after a landslide. The review of flood waves generated by landslides is described in detail in SRP Section 2.4.6. The review of channel diversion, stream blocking, and backwater effects leading to flooding is described in SRP Section 2.4.9. A detailed staff review is carried out in SER Sections 2.4.6 and 2.4.9, respectively. 8. Effects of Ice Formation in Water Bodies: The staff reviews historical data from USGS, USACE, and CRREL to evaluate potential flooding at the plant site due to collapse of an 2 The staff may accept site characteristics values presented in the SAR if that value is no more than 5% less conservative than the staff's independent estimate. For absolute values, e.g., accumulated freezing degree-days and local intense precipitation rates, the value itself will be used as the baseline. For relative measures, e.g., elevations measured above a datum, the location of the datum has a significant effect on the difference expressed as a percentage. The staff will use the site grade as the datum for elevation-based