Document: NUREG-0800
Document ID: a4637484-a66d-4066-b2e7-77b0ea7d3187
Document Type: srp
Title: 2.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070601.pdf
Revision Date: 2023-06
Chapter: 10
Section ID: 10.4.9.16
CFR Part: 
CFR Title: 

Content:
45 requires that the cooling water system shall be designed to permit appropriate periodic inspection of important components (e.g., heat exchangers and piping) to ensure the integrity and capability of the system. GDC 45 applies to SRP Section 10.4.7 because the CFS provides cooling water to the reactor or steam generators and because the CFS is isolated in the event of certain accidents. This review verifies that the feedwater system design facilitates inspection. Meeting the requirements of this criterion provides a level of assurance that the CFS will be able to perform its safety function in the event of an accident.55 6. GDC 46 requires that the cooling water system shall be designed to facilitate periodic pressure and functional testing that will ensure (a) the structural and leaktight integrity of CWS components, (b) the operability and the periodic performance of the system's active components, and (c) the operability of the system as a whole. The criterion further requires that the testing ensure, under conditions as close to design as practical, the performance of the full operational sequence that brings the system into operation for reactor shutdown and for loss-of-coolant accidents, including operation of applicable 10.4.7-7 DRAFT Rev. 4 - April 1996 portions of the protection system and the transfer between normal and emergency power sources. GDC 46 applies to SRP 10.4.7 because the CFS provides the proper cooling water inventory for PWR steam generators or BWR reactor pressure vessels during normal operation. The CFS is isolated after a loss-of-feedwater accident has occurred. During such conditions, the CFS feedwater piping inside the containment is used as the conduit for feedwater flow from alternate systems. This review determines that the CFS is designed to accommodate testing the system and its components. Meeting the requirements of this criterion provides a level of assurance that the CFS will be able to perform reliably under normal