Document: NUREG-0800
Document ID: 37f5720b-ea06-4c49-82be-7084e2aff199
Document Type: srp
Title: - Ground Water Conditions.  In meeting the requirements of 10 CFR Parts 50 and
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1331/ML13311B744.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.5.4.6
CFR Part: 
CFR Title: 

Content:
100, the analysis of groundwater conditions is acceptable if the following are included in this subsection or cross-referenced to the appropriate subsections in Section 2.4 of the applicant’s technical submittal: A. Discussion of critical cases of groundwater conditions relative to the foundation settlement and stability of the safety-related facilities of the nuclear power plant. B. Plans for dewatering during construction and the impact of the dewatering on temporary and permanent structures. This includes consideration of the potential for substantial head and volume of water due to the deep excavation for the plant structures. C. Analysis and interpretation of seepage and potential piping conditions during construction. D. Records of field and laboratory permeability tests as well as dewatering induced settlements. E. History of groundwater fluctuations as determined by periodic monitoring of an adequate number of local wells and piezometers. Flood conditions should also be considered. F. Evaluation of chemical properties of the groundwater that may impact long-term behavior of the rock/soil/fill materials as well as structural elements (concrete and steel materials). Groundwater conditions as they affect foundation stability are evaluated by studying the applicant's records of the historic fluctuations of groundwater at the site as obtained by monitoring local wells and springs and by analysis of piezometer and permeability data from tests conducted at the site. The applicant's dewatering plans during and following construction are also reviewed. Adequacy of these plans is evaluated by comparing with the results of the groundwater investigations and by professional judgment of 2.5.4-12 Revision 5 – July 2014 groundwater and soil conditions at the site. The impacts of these dewatering plans on temporary and permanent structures are evaluated.