Document: NUREG-0800
Document ID: 50ab8154-2a3c-4c0f-8ce4-06ac83096e5c
Document Type: srp
Title: ULTIMATE HEAT SINK
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550048.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.2.5
CFR Part: 
CFR Title: 

Content:
tions. C. The towers can provide the design cooling water temperature under the worst combination of adverse environmental conditions, even freezing, and the basins can supply water for 30-day cooling at the required temperature without makeup unless acceptable makeup capabilities can be demonstrated. This determination is verified by independent calculations. 4. Reactor sites that utilize large natural or manmade water sources, which for all practical purposes have an infinite supply of water, are reviewed as described in subsections III.1 and III.2 of this SRP section, and in addition the reviewer determines: A. By reviewing the SAR preliminary site and plant arrangement sketches (construction permit) and site drawings and plant arrangement drawings (operating license) whether the intake and outlet conduits (open or closed type) are properly separated to prevent recirculation or water temperature stratification. B. Whether manmade earth dam, dike, or other SAR structure design bases include requirements for withstanding the design basis natural phenomena or combinations of such phenomena at historically recorded intensities. In a failure of a dam, dike, or other structure not designed to withstand the design basis natural phenomena (particularly the SSE), sufficient water must remain in the source pool for a 30-day minimum cooling water supply with adequate cooling capability so that the required service water system inlet cooling water temperature is not exceeded. 5. For review of a DC application, the reviewer should follow the above procedures to verify that the design, including requirements and restrictions (e.g., interface requirements and site parameters), set forth in the final safety analysis report (FSAR) meets the acceptance criteria. DCs have referred to the FSAR as the design control document (DCD). The reviewer should also consider the appropriateness of identified COL action 9.2.5-8 Revision 3 - March 2007 items. The reviewer may identify additional