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:
ril 1996 For those areas of review identified above as being the responsibility of other branches, the acceptance criteria and their methods of application are contained in the SRP sections identified as the primary review responsibility of those branches. II. ACCEPTANCE CRITERIA Acceptability of the circulating water system, as described in the applicant's safety analysis report (SAR), is based on meeting the requirements of General Design Criterion 4 (GDC 4), "Environmental and Dynamic Effects Design Bases," as it relates to design provisions provided 22 to accommodate the effects of discharging water that may result from a failure of a component or piping in the CWS. Compliance with GDC 4 is based on meeting the following: 1. Means should be provided to prevent or detect and control flooding of safety-related areas so that the intended safety function of a system or component will not be precluded due to leakage from the CWS. 2. Malfunction or a failure of a component or piping of the CWS, including an expansion joint, should not have unacceptable adverse effects on the functional performance capabilities of safety-related systems or components. Technical Rationale The technical rationale for application of these acceptance criteria to reviewing the circulating water system is discussed in the following paragraphs:23 GDC 4 requires that structures, systems, and components important to safety shall be designed to accommodate the effects and be compatible with the environmental conditions associated with normal operation, maintenance, testing, and postulated accidents. Although the circulating water system is not safety related, GDC 4 establishes CWS design limits that will minimize the potential for creating adverse environmental conditions (e.g., flooding of 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