Document: NUREG-0800
Document ID: 9ec109d9-dfac-443f-a128-99771d0f5c88
Document Type: srp
Title: FLOODS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0701/ML070100647.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.2
CFR Part: 
CFR Title: 

Content:
rs and embayments. B. The staff reviews seismically induced seiches in inland lakes. C. The staff reviews seismically induced seiches by tsunami (seismic sea waves) on coastal embayments. D. The staff reviews combinations of less severe surges and seiches, coincident with runoff floods. 5. Tsunami A. The staff reviews near field, or local, excitation that may induce a tsunami. It is also possible that a seismic event, with an epicenter located on land but near the coast, may generate a tsunami in an ocean. Propagation of such a tsunami may pose a safety hazard to the site. B. The staff reviews far field, or distant, excitation that may induce a tsunami that affects the plant site. C. The staff reviews hillslope failure-generated tsunami-like waves. D. The staff reviews submarine landslide-generated tsunami. E. The staff reviews inland tsunami: e.g., tsunami generated on the Mississippi River due to the February, 1812, New Madrid earthquake. 6. Seismically Induced Dam Failures (or Breaches) The staff reviews the maximum water level at the site from the following causes: A. Failure of dam (or dams) during safe shutdown earthquake (SSE) coincident with 25-year flood and 2-year wind waves. B. Failure during operating basis earthquake (OBE) coincident with standard project flood (SPF) and 2-year wind waves. The OBE is defined by Appendix A to 10 CFR Part 100. C. Failure during other earthquakes, coincident with runoff, surge, or seiche floods where the coincidence is at least as likely as for 6.A and 6.B above. D. Breaches of water control structures that may be located above the site grade and sufficiently near safety-related SSC. 2.4.2-4 Revision 4 - March 2007 7. Flooding Caused by Landslides A. The staff reviews flood waves. B. The staff reviews backwater effects due to stream blockage. 8. Effects of Ice Formation in Water Bodies The staff reviews formation of ice sheet on surface of water bodies, frazil and anchor ice, and ice dam formation inasmuch as these