Document: NUREG-1555
Document ID: 5a4eb38b-9f84-4cc6-ab01-0be817580f4c
Document Type: esrp
Title: INTAKE SYSTEM
Source: NUREG-1555
Source URL: https://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr1555/initial/
Revision Date: 2007-10
Chapter: 5
Section ID: 5.3.1
CFR Part: 
CFR Title: 

Content:
pulations of “important” aquatic biota in the vicinity of the intake), prepare a detailed analysis of intake hydrodynamics consisting of ` a review of any applicant supplied flow field predictions or ` a reviewer prepared prediction of the induced flow field based on modeling procedures. - Consult with the reviewers for ESRPs 2.4.2 and 5.3.1.2 to determine the extent of the surface-water body to be analyzed. - For once through cooling systems, consult with the reviewer for ESRP 5.3.2.1 to ensure that the area of the water body to be analyzed is sufficient to permit analysis of potential recirculation of discharged cooling water. - Provide a quantitative description of the induced flow field taking into account the ambient currents. - Provide velocity vectors or other descriptors showing the areal extent of the region affected by the induced flow field. Physical Impacts of Intakes The reviewer should take the following steps to analyze the physical impacts of the intake system: (1) Identify and analyze physical changes resulting from intake system operation, including NUREG-1555 5.3.1.1-6 October 1999 ` shoreline erosion ` bottom scouring ` induced turbidity ` silt buildup. Staff experience has indicated that the impacts associated with these physical changes are minor, and mitigative action or consideration of alternatives has not been required. (2) Unless adverse impacts have been identified, no further evaluation is required. The reviewer should ensure that the description of the intake flow field is adequate to serve as a basis for the impact assessment of ESRP 5.3.1.2 and for providing flow patterns necessary for the assessment of potential heated water recirculation conducted in ESRP 5.3.2.1. The reviewer should ensure that analyses involving mathematical or physical modeling of intake flow fields are appropriate for the specific situation being modeled, have been verified or shown to be conservative, and are documented and referenced. The reviewer should