Document: NUREG-0800
Document ID: f689fb6d-4711-4972-b900-1b2001877b19
Document Type: srp
Title: TSUNAMI HAZARDS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1819/ML18190A200.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.6
CFR Part: 
CFR Title: 

Content:
odynamic forces caused by the tsunami waves are adequately established for the purposes of the plant design bases. 6. Debris and Water-Borne Projectiles. The staff reviews the estimation of debris and projectile loads caused by debris and water-borne projectiles carried along with the tsunami currents and their ability to cause damage to those SSCs important to safety. The staff should note that the suggested criteria of RG 1.27 apply when the water supply comprises part of the ultimate heat sink. The staff should confirm that it has been demonstrated in the application that any possibility of damage to those SSCs important to safety from debris and water-borne projectiles is adequately established for the purposes of the plant design bases and that the current federal guidelines by the USACE, FEMA or others were used to determine the water-borne debris loads. 7. Effects of Sediment Erosion and Deposition. The staff reviews the sediment deposition during tsunami inundation, as well as the erosion caused by the high velocity of flood waters or wave action during flood inundation and its effect on foundations of structures within the powerblock and other SSCs important to safety, to ensure that these are adequately established for the purposes of the plant’s flooding design bases. The staff should confirm that any potential erosion and sediment deposition would not affect the functioning of an exposed SSC important to safety. The staff should note that the suggested criteria of RG 1.27 apply when the water supply comprises part of the ultimate heat sink. 8. Consideration of Other Site-Related Evaluation Criteria. 10 CFR Part 100 describes site-related proximity, seismic, and non-seismic evaluation criteria for power reactor applications. Subpart A to 10 CFR Part 100 addresses the requirements for applications before January 10, 1997, and Subpart B is for applications on or after January 10, 1997. If the tsunami flood-causing mechanism is determined to be