Document: NUREG-0800
Document ID: 0b3aa37b-8c53-417c-877a-a70d97e6a41e
Document Type: srp
Title: CIRCULATING WATER SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070597.pdf
Revision Date: 2023-06
Chapter: 10
Section ID: 10.4.5
CFR Part: 
CFR Title: 

Content:
systems and components important to safety). Meeting the requirements of this criterion provides a level of assurance that systems and components important to safety will perform their intended safety functions.24 III. REVIEW PROCEDURES The procedures below are used during the construction permit (CP) reviews to determine that the design criteria and bases and the preliminary design as set forth in the preliminary safety analysis report meet the acceptance criteria given in subsection II. For the review of operating license (OL) applications, the procedures are used to verify that the initial design criteria and bases have been appropriately implemented in the final design as set forth in the final safety analysis report. Upon request from the primary reviewer, the coordinating review branches will provide input for the areas of review stated in subsection I. The primary reviewer obtains and uses such input as required to assure ensure that this review procedure is complete. DRAFT Rev. 3 - April 1996 10.4.5-4 The reviewer will select and emphasize material from this SRP section as may be appropriate for a particular case. 1. Although the circulating water system is not safety related, a failure of this system, or any of its components, may affect a safety-related component or system. Since large quantities of water flow through the CWS, a leak or break in a component or pipe or expansion joint failure could cause severe and unacceptable flooding of adjacent areas. The reviewer verifies that the design includes provisions to minimize hydraulic transients and their effect upon the functional capability and the integrity of system components. In evaluating the effects of the failure of an expansion joint, ASBSPLB assumes that 25 the butterfly valve(s) are not available to isolate CWS flow out of the failed expansion joint unless the valve(s) have been designed to safety-grade requirements. The ASBSPLB reviews the descriptions and drawings in the SAR and determines that