Document: NUREG-0800
Document ID: c6f1872f-6590-4af8-b290-f6ec212570a9
Document Type: srp
Title: GROUNDWATER
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0707/ML070730443.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.12
CFR Part: 
CFR Title: 

Content:
oundwater design bases of SSC important to safety is needed. Sufficient information should be provided to determine if the dewatering system is a safety-related system as proposed in the plant design. This information should also be sufficient to determine if the dewatering system is required during plant operation. 5. Consideration of Other Site-Related Evaluation Criteria: To meet the requirements of 10 CFR 50.55a, GDC 2, GDC 4, GDC 5, 10 CFR 100.20(c)(3), 10 CFR 100.23(d), and 10 CFR 100.10(c) or 100.20(c), the applicant’s assessment of the potential effects of site-related proximity, seismic, and non-seismic information on the postulated worst- case scenario related to groundwater effects for the proposed plant site is needed. This assessment should be sufficient to demonstrate that the applicant’s design bases appropriately account for these effects. Technical Rationale The technical rationale for application of these acceptance criteria to the areas of review addressed by this SRP section is discussed in the following paragraphs: 1. Compliance with 10 CFR 50.55 requires that any holder of a facility construction permit who obtains information indicating the reasonable possibility of a deficiency related to construction or a compliance failure involving substantial safety hazards should notify the Commission. 2.4.12-5 Revision 3 - March 2007 This criterion is applicable to Section 2.4.12 inasmuch as the design of permanent dewatering systems (a cost-effective technique frequently employed at nuclear power plants to minimize foundation design complexities) requires information that can only be inferred from measurements available before construction begins. For this reason, data gathered during construction excavation often indicate the need to modify designs for dewatering systems. Changes with the potential to affect a safety-related structure or system should have the concurrence of NRC reviewers. Meeting these requirements provides a level of assurance