Document: NUREG-0800
Document ID: 5f917fa2-996e-40db-ab71-094808f68797
Document Type: srp
Title: ANALYSIS PROCEDURES
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070306.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.4.2
CFR Part: 
CFR Title: 

Content:
Branch (HGEB) by ECGB as part of its 7 primary review responsibility for SRP Section 2.4.2.8 b. ECGB reviews groundwater data to determine the highest groundwater levels as part of its primary review responsibility for SRP Section 2.4.12.9 c. The ECGB coordinates and performs the review of site parameters postulated for design in a standard design certification application as part of its primary review responsibility for SRP Section 2.3.6.10 II. ACCEPTANCE CRITERIA SEB accepts t The design of a structure that must withstand the effects of the flood or highest 11 groundwater level is acceptable if the relevant requirements of General Design Criterion 2, 12 "Design Bases for Protection Against Natural Phenomena," concerning natural phenomena are 13 complied with. The criteria necessary to meet the relevant requirements of GDC 2 are as follows: 1. The flood or highest groundwater and the associated static and dynamic effects, if any, 14 used in the design shall be the most severe ones that have been historically reported for the site and surrounding area, with sufficient margin for the limited accuracy, quantity, and period of time in which the historical data have been accumulated. 2. The acceptance criteria for the flood or highest ground water level, for establishing the dynamic effects of the flood where it is above the plant grade, and for the bases for determining these site-related and hydrodynamic parameters, are established by the Hydrologic & Geotechnical Engineering Branch (HGEB) as stated in Standard Review Plan Sections 2.4.2.15 32 . In most situations, the flood level is below the proposed plant grade and only its 16 hydrostatic effects need be considered. Unless the hydrostatic head associated with the flood or with the highest groundwater level is relieved by utilizing a drainage and pumping system around the foundations of structures, it has to be considered as a structural load on the basement walls and foundation slab of the building. Another