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:
l water supplies. For coastal sites, the appropriate probable maximum hurricane 2.4.11-2 Rev. 2 - July 1981 (PMH) wind fields must be postulated to give maximum winds blowing offshore, thus creating a probable minimum surge level. Low water levels on inland ponds, lakes, and rivers due to surges must be estimated from probable maximum winds oriented away from the plant site. The same general analysis methods discussed in Standard Review Plan Sections 2.4.3, 2.4.5 and 2.4.6 are applicable to low water estimates due to the various phenomena discussed. SAR Section 2.4.11.3.(Historical Low Water): If historical flows and levels are used to estimate design values by inference from frequency-distribution plots, the data used must be presented so that an independent determination can be made. The data and methods of the National Oceanic and Atmospheric Administration, United States Geologic Survey, Soil Conservation Service, Bureau of Reclamation, and the Corps of Engineers are acceptable. SAR Section 2.4.11.4 (Future Controls): This section is acceptable if water use and discharge limitations (both physical and legal), already in effect or under discussion by responsible Federal, regional, state, or local authorities, that may affect water supply at the plant have been considered and are substan- tiated by reference to reports of the appropriate agencies. The most adverse possible effects of these controls must be shown and taken into account in the design basis to assure that essential water supplies are not likely to be affected adversely in the future. SAR Section 2.4.11.5 (Plant Requirements): Acceptance is based on the follow- ing required information: 1. Minimum essential cooling water flow rates and levels must be presented (or cross-referenced) and shown to be less than the probable minimum low flows and levels from the applicable sources of supply. 2. Maximum water requirements for normal operation must be presented and (if applicable) shown to be less than the