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:
review protection of structures such as riprap from wave and runup action coincident with the highest flood water elevation that may result from one or a reasonable combination of flooding mechanisms evaluated separately in SRP Sections 2.4.2, 2.4.3, 2.4.4, 2.4.5, 2.4.6, and 2.4.7. If the protection is provided for a structure that is safety-related, requirements of GDC 1 and GDC 2 apply. Protection of SSC important to safety from flooding is reviewed under SER Section 2.4.10. If the staff’s review disagrees with the applicant’s estimates of these design bases, the applicant should fully document and justify its estimates or accept the staff's estimates and redesign protection of the SSC important to safety. 2.4.8-8 Revision 3 - March 2007 2. Hydraulic Design Bases of Canals: The staff reviews design bases of canals pertaining to the capacity, protection against wind waves, erosion, sedimentation, and freeboard, and the ability to withstand a probable maximum flood (PMF), surges, etc. The staff also reviews the adequacy of the safety-related canals under drought conditions. Low flow scenarios, estimated in the applicant’s SAR Section 2.4.11, are used. The criteria of Regulatory Guide 1.27 should be used if the canals are a part of the ultimate heat sink. Erosion and sedimentation during floods that may lead to loss of functionality of the canals, if it is part of the ultimate heat sink, are also reviewed as required by GDC 1 and GDC 2. If the staff’s review disagrees with the applicant’s estimates of these design bases, the applicant should fully document and justify its estimates or accept the staff’s estimates and redesign the safety-related canals. The suggested criteria of Regulatory Guide 1.27 should be applied when the water supply comprises part of the ultimate heat sink. 3. Hydraulic Design Bases of Reservoirs: The staff reviews the design bases of reservoirs pertaining to wind wave and runup coincident with the highest flood water surface