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:
REVIEW RESPONSIBILITIES Primary - Auxiliary Systems Branch (ASB)Plant Systems Branch (SPLB)1 Secondary - None I. AREAS OF REVIEW The circulating water system (CWS) provides a continuous supply of cooling water to the main condenser to remove the heat rejected by the turbine cycle and auxiliary systems. 1. The ASBSPLB reviews the performance of the CWS with respect to its functional 2 requirements and the effects of adverse environmental occurrences, abnormal operational transients anticipated operational occurrences, or accident conditions such as loss of 3 offsite power. 2. The ASBSPLB reviews the CWS and its interfaces with other systems to determine that 4 a malfunction, failure of a component, or failure of a circulating water pipe, including the failure of an expansion joint, do not have unacceptable adverse effects on the functional performance capabilities of safety-related systems located in the immediate area. 3. ASBSPLB further reviews the design of the circulating water system with respect to the 5 following: a. The capability to prevent or detect and control flooding of safety-related areas so that the intended safety function of a safety system or component will not be precluded due to circulating water system leakage. DRAFT Rev. 3 - April 1996 10.4.5-2 b. Provisions to annunciate abnormal and unsafe operating conditions. Review Interfaces The SPLB performs the following reviews as part of its primary review responsibility under the Standard Review Plan (SRP) sections indicated:6 4.7 1. ASBSPLB also performs the review of high- and moderate-energy pipe breaks under 8 9 SRP Section 3.6.1. SRP Section 3.6.1 identifies the circulating water system as a moderate-energy system included in the scope of review.10 2. SPLB determines whether liquid-carrying systems could produce flooding and evaluates the measures taken to protect safety-related equipment from internal flooding under SRP Section 3.4.1.11 In addition, the ASBSPLB will coordinate other branch