Document: NUREG-0800
Document ID: be033a97-be2a-4a23-91fe-52b123162b3b
Document Type: srp
Title: LOW WATER CONSIDERATIONS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0707/ML070730439.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.11
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Organization responsible for the review of issues related to hydrology Secondary - None I. AREAS OF REVIEW Chapter 2 of the Standard Review Plan (SRP) discusses the site characteristics that could affect the safe design and siting of a plant. The staff reviews information presented by the applicant for a construction permit (CP), operating license (OL), design certification (DC), early site permit (ESP), or combined license (COL) concerning hydrological setting of the site as they relate to safety-related structures, systems, and components (SSC). This SRP section applies to reviews performed for each of these types of applications. The staff’s review and findings are described in the appropriate section of the safety evaluation report (SER). In this section of the applicant’s safety analysis report (SAR), natural events that may reduce or limit the available safety-related cooling water supply, are identified and the applicant ensures that an adequate water supply will exist to shut down the plant under conditions requiring safety-related cooling. The specific areas of review are as follows: 1. Low Water from Drought: The staff reviews the worst drought considered reasonably possible in the region. 2.4.11-2 Revision 3 - March 2007 2. Low Water from Other Phenomena: The staff reviews the effects of low water surface elevations caused by various hydrometeorological events and potential blockage of intakes by sediment, debris, littoral drift, and ice inasmuch as they affect safety-related water supply. The review of low water effect of existing and proposed water control structures (including those due to dam failures) is described in SRP Section 2.4.4. The review of low water setdown resulting from surges, seiches, or tsunami events is described in SRP Sections 2.4.5 (Surge or Seiche) and 2.4.6 (Tsunami). The review of low water resulting from icing events is described in SRP Section 2.4.7 (Icing). 3. Effect of Low Water on