Document: NUREG-0800
Document ID: eea126bc-3192-4a98-b937-2f09794010cd
Document Type: srp
Title: COOLING WATER SUPPLY
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340556.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.11
CFR Part: 
CFR Title: 

Content:
than 30 days. The applicant will be asked to determine whether sufficient personnel and equipment can safely be made available to switch water supply sources in the event of an accident. If emergency procedures are required to obtain the use of alternate water supplies, the applicant's water supply sources and procedures will be reviewed with AEB, PSB, and the LPM to determine that there is continuity of water supply. The time period for which a highly dependable water supply would be available is compared with the time required to obtain water from an alternative supply, and the natural or accident environ- mental conditions which could prevail. For long-term water supply capability,.different sources and means of obtaining water may be required.because of the limited capability of a "short-term" supply. In those cases where different sources are necessary to assure the long-term plant heat removal capability, the alternative sources and the means of supply- ing water from the sources to the plant should be identified. Any plant design provisions necessary for such situations should also be described or a reference provided to other SAR sections for the descriptions. Emergency means for obtaining long-term water supplies will be judged on the basis of the time required to obtain such supplies, natural or accident phenomena likely -to prevail or to have caused the need for such supplies, and the dependability of the supply itself. 2.4.11-5 Rev. 2 - July.1981 The ability of the ultimate heat sink to provide the plant with cooling water below the design maximum temperature will be evaluated. The design maximum temperature and the heat load of the design basis accident, as specified in Regulatory Guide 1;27, will be provided by .ASB. Techniques for selecting the meteorologic conditions for minimum heat transfer and for performing the tran- sient analysis for cooling ponds and spray ponds are provided in References 24 and 25, respectively. IV. EVALUATION FINDINGS The