Document: NRC Regulatory Guide
Document ID: 239cc7c1-f2cb-46cc-945d-8009db28aa6c
Document Type: regulatory_guide
Title: General Site Suitability Criteria for Nuclear Power Stations + HISTORY - HISTORY 12/2023 – DG-4034 , Proposed Revision 4 12/2011 – DG-4021 , Proposed Revision 3 02/1995 – DG-4004, Second Proposed Revision 2 11/1992 – DG-4003, Proposed Revision 2 (Rev. 4)
Source: NRC Regulatory Guide Division 4
Source URL: https://www.nrc.gov/docs/ML2312/ML23123A090.pdf
Revision Date: 2023-10
Chapter: 
Section ID: RG-4.7
CFR Part: 
CFR Title: 

Content:
diversion. Storm surges, seiches, or tsunamis may affect sites near lakes, reservoirs, estuaries, or oceans. Where applicable, the potential for flooding events due to the combined effects of multiple flooding mechanisms (e.g., rainfall with snowmelt, rainfall with dam failure, storm surge with wind waves and tides) should be considered. The potential for sea level rise and other global climate change effects should also be considered. Water Availability Nuclear power stations require reliable sources of water for steam condensation, service water, the emergency core cooling system, and other functions. Limitations imposed by existing laws or allocation policies govern the use and consumption of cooling water at potential sites for normal operation. Consumption of water may necessitate an evaluation of existing and future water uses in the area to ensure adequate water supply during droughts for both station operation and other water users (i.e., commercial nuclear power station requirements versus public water supply). It may be necessary to consult other Federal, State, or local regulatory agencies to avoid potential conflicts. Water Quality Thermal and chemical effluents discharged to navigable streams are governed by the CWA and regulated by Federal and State water quality standards. The States administer significant portions of the CWA. In some instances, State approvals or permits are needed before the NRC can issue a license. Radionuclide Retention and Transport Aquifers that are or may be used for domestic, municipal, industrial, or irrigation water supplies provide potential pathways for the transport of radioactive material to the population in the event of an accident. The retardation, dispersion, and dilution capabilities and potential contamination pathways of the ground water environment under operating and accident conditions, with respect to present and future users, are important factors in site selection. DG-4034, Page 8 Industrial, Military, and