Document: NUREG-0800
Document ID: f994604a-3360-4514-afe7-68461d4dfd34
Document Type: srp
Title: FLOODING PROTECTION REQUIREMENTS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070256.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.10
CFR Part: 
CFR Title: 

Content:
to occur.24 3. Compliance with 10 CFR 100.10(c) requires that the site's physical characteristics (including seismology, meteorology, geology, and hydrology) be taken into account when determining its acceptability for a nuclear power reactor. To satisfy the hydrologic requirements of 10 CFR Part 100, the applicant's SAR must contain a description of the surface hydrologic characteristics of the site and region, as well as an analysis of the area's flood potential. The description must be sufficient to assess the acceptability of the site for a nuclear power plant of the proposed design. In addition, it may be necessary to assess the potential of those hydrologic characteristics to influence the design of structures, systems, and components important to safety and to define any special flood protection requirements therefor. Meeting this requirement provides assurance that structures, systems or components important to safety are designed to withstand, or are protected against, the effects of potentially severe flooding. 25 III. REVIEW PROCEDURES The estimated design basis flood level is compared with the locations and elevations of safety-related components. The staff will independently determine from analyses of postulated individual hydrologic events whether flood protection is required, and if so, what protective levels (including static and dynamic effects) are applicable. Based on tThese data, are transmitted to Structural Engineering Branch (SEB) for determination of the ECGB will determine the structural design criteria adequacy. and These data are also transmitted to 26 Auxiliary Plant Systems Branch (ASBSPLB) and Equipment Qualification Branch (EQB) for 27 determination of safety system adequacy. For flood protection requiring emergency action, the design basis flood conditions, and other less severe events, are reviewed to establish the minimum time available for implementation of emergency procedures. Physical parameters such as rate-of-rise (of river or