Document: NUREG-0800
Document ID: 57051ec2-9a01-488e-8294-573ed557f3eb
Document Type: srp
Title: GROUNDWATER
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070262.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.12
CFR Part: 
CFR Title: 

Content:
staff positions related to the design of a safety-related dewatering system. Such a system is usually designed to protect an entire site. This criterion is applicable because it provides the basis for requiring that a dewatering system be designed and sized so that an accident, such as a major waterline break in one unit, will not degrade the system to the extent that hydrostatic loadings will exceed the original design bases of safety-relate structures associated with other units. Meeting these requirements will provide a level of assurance that site a dewatering system shared by two or more nuclear units will be designed so that no single failure will prevent the system from performing its safety function.19 DRAFT Rev. 3 - April 1996 2.4.12-6 6. As specified in 10 CFR 100.10(c), the site's physical characteristics (including seismology, meteorology, geology, and hydrology) must be considered when determining its acceptability for a nuclear power reactor. Paragraph 100.10(c)(3) stipulates that special precautions should be planned if a reactor is to be located at a site where a significant quantity of radioactive effluent might find ready access to underground water tables. To satisfy the hydrologic requirements of 10 CFR Part 100, the NRC staff review of the applicant's SAR must verify the description of groundwater conditions at the proposed site and of how those conditions will be affected by the construction and operation of a nuclear power plant. In particular, this description must include the details of any site dewatering system. Meeting this requirement provides a level of assurance that groundwater at or near the site of a nuclear power plant will not be significantly affected by the release of radioactive effluents from the plant. 20 7. Appendix A to 10 CFR Part 100 requires that geologic and seismic factors be considered when determining the suitability of the site and the acceptability of the design for each nuclear power plant. In particular,