Document: NUREG-0800
Document ID: aac96014-0cf1-4116-83f5-f791b43a8be8
Document Type: srp
Title: COOLING WATER CANALS AND RESERVOIRS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340550.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.8
CFR Part: 
CFR Title: 

Content:
ferences 24 and 25. Subsequently, the staff will develop a position based on the analyses; resolve, if possible, differences between the applicant's and staff's design bases; and prepare the SER input accordingly. The above reviews are performed only when applicable to the plant. Some items of review may be done on a generic basis. IV. EVALUATION FINDINGS For construction permit (CP) reviews, the findings will consist of a statement of the applicant and staff-estimates of the type and adequacy of required struc- ture protection and the hydraulic design basis of canals and reservoirs. Because of the advanced design required for the CP and where the design has received a detailed review at the CP stage, the operating license (OL) find- ings will only be an acknowledgement of any changes and a statement of acceptability. If a design or flooding potential was not reviewed in detail at the CP stage, it will be done at the OL stage. Sample statements from CP reviews follow: The staff concludes that the auxiliary and main dams meet the require- ments of 10 CFR Part 50, §50.55a and General Design Criterion 2 with respect to hydrologic and hydraulic design and are therefore acceptable. This is based on the following evaluation. Although postulated flood waters are not expected to reach plant grade, protection of the essential auxiliary and main dams against their respective probable maximum floods is to be provided by riprap protec- tion of exposed embankment surfaces (including areas in the plant site vicinity along the auxiliary reservoir intake channel) and con- crete overflow spillways. At our request, the applicant provided design bases for riprap protection and the hydraulic design criteria for the two spillways. The applicant at our request, in Amendment No. 31 to the PSAR, provided criteria for the windwave riprap protec- tion based upon an empirical relationship for the median size stone to be placed in a blanket approximately two feet thick and indicated its