Document: NUREG-0800
Document ID: 482aa99f-2f4b-4e4c-b6c4-3ad5b3d83b59
Document Type: srp
Title: COOLING WATER CANALS AND RESERVOIRS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0707/ML070730431.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.8
CFR Part: 
CFR Title: 

Content:
ires a system for transferring heat from SSC important to safety to an ultimate heat sink during normal operations, anticipated operational occurrences, and accident conditions. GDC 44 applies to this SRP section because the ultimate heat sink for the cooling water system consists of complex water sources, including canals and reservoirs necessary to transport and impound plant cooling water. The design function of cooling water canals and reservoirs is to provide adequate cooling water to service or component cooling water systems so that plant components required to maintain adequate core cooling remain functional during normal operations, anticipated operational occurrences, and accident conditions. Meeting the requirements of GDC 44 provides assurance that cooling water canals and reservoirs will be designed to supply adequate cooling water during normal operations, anticipated operational occurrences, and accident conditions, thereby protecting against loss of core cooling. 4. 10 CFR 100.23(d) and Appendix A to 10 CFR Part 100 require that geologic and seismic factors include a determination of site suitability and acceptability of the nuclear power plant design. Paragraph V(d) in Appendix A describes the investigation required for determination of other design conditions, including that of the cooling water supply. It addresses the need to consider an adequate cooling water supply for emergency and shutdown decay heat removal in the design of a nuclear power plant. The evaluation should include consideration of river blockage or diversion, tsunami runup or drawdown, and failure of dams and intake structures, as appropriate. These requirements are applicable to SRP Section 2.4.8 because it requires investigation of hydraulic design bases for canals and reservoirs used to transport and impound water supplied to the SSC important to safety. These requirements guide the Commission in its consideration of the suitability of proposed sites for nuclear power plants.